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Why Inline 5 Engines Can't Be Carbureted and Why They're So Rare

Video vocabulary

two

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US / tu: /

UK / tu /

A1
  • number
  • 2

particular

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US / pəˈtɪkjələ(r) /

UK / pɚˈtɪkjəlɚ, pəˈtɪk- /

B2
  • adjecitve
  • One specific (one)
  • Having firm ideas about what is desirable
  • Being special or more than is typical

turbocharge

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US / 'tɜ:bəʊtʃɑ:dʒ /

UK / 'tɜ:boʊtʃɑ:dʒ /

A1
  • verb
  • To equip with a turbocharger

name

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US / neɪm /

UK / nem /

A1
  • noun
  • What something or someone is called
  • verb
  • To state what someone is called, e.g. John

out

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US / aʊt /

UK / aʊt /

A1
  • adverb
  • No longer stylish (e.g. fashion)
  • Away from home, business, or the usual place
  • In a direction/movement away from inside or center
  • noun
  • Act when a batter cannot continue playing
  • verb
  • To tell people a secret

only

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US / ˈəunli /

UK / ˈonli /

A1
  • adverb
  • Just one; just that amount or thing; not more than
  • Not very important or serious
  • Just that type of thing, person
  • Short time ago; not before a certain time
  • conjunction
  • Except; but

and

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US / ənd /

UK / ənd, ən,ænd /

A1
  • conjunction
  • Used to refer to two or more things
  • Plus; in addition; on top of that
  • Used to introduce an action that follows another

most

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US / məʊst /

UK / most /

A1
  • adverb
  • Very; extremely
  • Greatest possible degree
  • pronoun
  • Nearly all of something

put

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US / pʊt /

UK / pʊt /

A1
  • phrasal verb
  • to make a light stop shining by pressing or moving a switch
  • verb
  • To move or place a thing in a particular position
  • To rate something in importance or value
  • To write or say something in a certain manner

slash

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US / slæʃ /

UK / slæʃ /

B2
  • noun
  • Line ( / ) used in writing
  • Long, deep cut, caused by a sharp object
  • verb
  • To cut violently with a sharp object
  • To decrease something by a large amount

inline

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US / ɪŋkt /

UK / ɪŋkt /

A1

something

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US / ˈsʌmθɪŋ /

UK / ˈsʌmθɪŋ /

A1
  • adverb
  • In some degree or measure
  • noun
  • a person or thing of some value or consequence
  • pronoun
  • Thing that is not yet known or named
  • Approximately

hopefully

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US / ˈhəʊpfəli /

UK / ˈhopfəli /

A2
  • adverb
  • In a manner wishing something to happen

issue

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US / 'ɪʃu: /

UK / ˈɪʃu /

A2
  • noun
  • Important topic discussed, debated or argued over
  • Single edition of a magazine
  • verb
  • To make something available to be used or sold
  • To deliver a statement, etc. in an official manner

environment

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US / ɪn'vaɪrənmənt /

UK / ɛnˈvaɪrənmənt, -ˈvaɪən- /

A1
  • noun
  • Natural world in which plants and animals live
  • The entire surrounding conditions of something

clean

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US / kli:n /

UK / klin /

A1
  • adjecitve
  • Not marked in any way; blank
  • Done according to the rules or standards; fair
  • Free from disease or sickness
  • Being free from dirt or marks; washed
  • Behaving well; not breaking any rules; legal
  • adverb
  • Completely; entirely
  • verb
  • To make free from dirt or marks; washed
  • To make neat and orderly e.g. a room
  • To remove the inner parts of an animal

rare

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US / reə(r) /

UK / rɛr /

A2
  • adjecitve
  • (Of meat) cooked, but still red and juicy
  • Unusual or out of the ordinary; not common

over

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US / 'əʊvə(r) /

UK / ˈovɚ /

A1
  • adverb
  • Finished; no longer happening
  • Towards the ground/away from a standing position
  • noun
  • A set of six consecutive balls bowled in cricket
  • other
  • Finished
  • preposition
  • Showing the relation when a thing is above another
  • On or covering something
  • Above or across something
  • More than you need
  • From one side to the other
  • In the direction of; toward

counterpart

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US / ˈkaʊntəpɑ:t /

UK / ˈkaʊntərpɑ:rt /

B2
  • noun
  • Person/thing having same function/characteristics

real

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US / rɪəl /

UK / ˈriəl, ril /

A1
  • adjecitve
  • Actually existing or happening, not imagined
  • Being important or special

lot

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US / lɒt /

UK / lɑt /

A1
  • noun
  • What happens to a person in life from chance; fate
  • A group of people seen together
  • Item for sale at an auction
  • Small area of land used for a purpose e.g. parking

from

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US / frəm /

UK / frʌm, frɑm,frəm /

A1
  • preposition
  • Starting at a particular place, time or level

major

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US / 'meɪdʒə(r) /

UK / ˈmedʒɚ /

A2
  • adjecitve
  • Main league; esp. referring to American baseball
  • Important, serious, or large in scope, size
  • noun
  • High-ranking officer in the army
  • Main subject you study at university
  • verb
  • To study a particular subject at university

form

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US / fɔ:m /

UK / fɔrm /

A1
  • noun
  • Sports team or person's current winning record
  • Document you complete when making an application
  • Visible shape or style; type; kind
  • verb
  • To organize something such as a club or group
  • To develop; to come into a shape or substance
  • To make something into a particular shape

where

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US / hwɛə /

UK / hwɛr, wɛr /

A1
  • conjunction
  • At or in the place which
  • In whatever place
  • pronoun
  • Word you use to ask the location of something

complex

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US / 'kɒmpleks /

UK / kəmˈplɛks, ˈkɑmˌplɛks /

A2
  • adjecitve
  • Not being simple; having many parts or aspects
  • noun
  • Group of buildings all used for the same purpose
  • Psychological issue regarding self-image

volkswagen

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US / ˈvəʊkswægən /

UK / ˈvəʊkswægən /

A1

diesel

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US / ˈdi:zl /

UK / ˈdizəl, -səl /

B1
  • noun
  • Heavy mineral oil used for power engines

large

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US / lɑ:dʒ /

UK / lɑ:rdʒ /

A1
  • adjecitve
  • Big; of great size; broad, tall, wide, or fat

far

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US / fɑ:(r) /

UK / fɑr /

A1
  • adjecitve
  • A long way away
  • Being a long way away
  • adverb
  • To a large degree or extent

observe

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US / əbˈzɜ:v /

UK / əbˈzɜ:rv /

A2
  • verb
  • To celebrate a particular holiday/religious event
  • To obey or follow laws, rules, or customs
  • To watch carefully; to make a comment

meet

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US / mi:t /

UK / mit /

A1
  • noun
  • Sporting competition e.g. swimming
  • verb
  • To provide something that is necessary
  • To come together at a certain time or place

question

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US / 'kwestʃən /

UK / ˈkwɛstʃən /

A1
  • noun
  • Issue or problems you are dealing with
  • What you ask about; issue
  • verb
  • To ask for or try to get information
  • To have or express concerns or uncertainty

few

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US / fju: /

UK / fju /

A1
  • pronoun
  • Not many, a small number

consumption

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US / kənˈsʌmpʃn /

UK / kənˈsʌmpʃən /

B1
  • noun
  • The act of buying and using products
  • The act of using energy, food or materials; the amount used
  • A serious disease of the lungs

definitely

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US / ˈdefɪnətli /

UK / ˈdefɪnətli /

A2
  • adverb
  • Without question; beyond doubt

middle

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US / 'mɪdl /

UK / ˈmidl /

A1
  • adjecitve
  • Equal distance from extremes
  • noun
  • Place that is halfway between two things

lower

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US / 'ləʊə(r) /

UK / ˈlaʊɚ, laʊr /

A2
  • adjecitve
  • In a position more near the bottom
  • verb
  • To move something downward to the ground

overall

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US / ˌəʊvər'ɔ:l /

UK / ˈovɚˌrɔl /

A2
  • adjecitve
  • Viewed as a whole; in general, not as details

carb

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US / kɑːb /

UK / kɑːrb /

A1
  • noun
  • Short form of carbohydrate

difficult

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US / 'dɪfɪkəlt /

UK / ˈdɪfɪˌkʌlt, -kəlt /

A1
  • adjecitve
  • Hard; not easy; you need to work hard to do it

short

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US / ʃɔ:t /

UK / ʃɔrt /

A1
  • adverb
  • Less than what is needed
  • Suddenly stopping what you are saying or doing
  • verb
  • (Of electric circuit) to spark because faulty
  • adjecitve
  • Measuring a small distance
  • Happening for a small amount of time
  • Unfriendly or rude

acceptable

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US / əkˈseptəbl /

UK / ækˈsɛptəbəl /

A2
  • adjecitve
  • Satisfactory; good enough

vehicle

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US / ˈvi:əkl /

UK / ˈvi:hɪkl /

A2
  • noun
  • Machine (such as a car) used to carry things
  • Means of expressing, showing, or achieving

stuff

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US / stʌf /

UK / stʌf /

A1
  • noun
  • Generic description for things, materials, objects
  • verb
  • To push material inside something, with force

time

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US / taɪm /

UK / taɪm /

A1
  • noun
  • Speed at which music is played; tempo
  • Point as shown on a clock, e.g. 3 p.m
  • Number of hours, minutes needed to do something
  • Occasion when something happens
  • Period or occasion that something occurred
  • Period in history or the past
  • Something measured in minutes, hours, days, etc.
  • How long an event takes; duration
  • verb
  • To check speed at which music is performed
  • To choose a specific moment to do something
  • To measure how long an event takes, e.g. a race
  • To schedule something to occur at a specific moment

difference

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US / 'dɪfrəns /

UK / ˈdɪfərəns, ˈdɪfrəns /

A1
  • noun
  • A thing or issue that people do not agree about
  • Not of the same kind; unlike other things

much

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US / mʌtʃ /

UK / mʌtʃ /

A1
  • adjecitve
  • Very; to a high level or degree
  • adverb
  • A lot; large amount; a high degree of
  • Nearly; basically
  • On many occasions; often
  • noun
  • A large amount; a great quantity

audi

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US / ɔ:'deɪʃəslɪ /

UK / ɔ:'deɪʃəslɪ /

A1

why

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US / waɪ /

UK / hwaɪ, waɪ /

A1
  • adverb
  • Question word to ask for a reason
  • exclamation
  • (Used to express surprise or approval)

compact

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US / 'kɒmpækt /

UK / kəmˈpækt /

B1
  • adjecitve
  • Packed closely together
  • noun
  • Small case with face powder and a mirror
  • verb
  • To pack something closely or tightly

technology

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US / tek'nɒlədʒɪ /

UK / tɛkˈnɑlədʒi /

A2
  • noun
  • Use or knowledge of science in industry etc.

extremely

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US / ɪkˈstri:mli /

UK / ɪk'strimlɪ /

B1
  • adverb
  • In a way that is much more than usual or expected

manufacturing

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US / ˌmænjuˈfæktʃərɪŋ /

UK / ˌmænjəˈfæktʃərɪŋ /

A2
  • noun
  • The act of making things in factories
  • verb
  • To produce large numbers of products in a factory
  • To create a story or explanation that is not true

mount

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US / maʊnt /

UK / maʊnt /

B2
  • noun
  • An attachment used to keep something in place
  • Title of a specific mountain
  • Horse that someone is riding
  • verb
  • To attach something to something else
  • To set a picture, jewel etc. in
  • To sit on a horse or bike in order to ride it
  • To climb a mountain
  • To organize an exhibition, race etc.
  • To start (an attack) against an enemy

special

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US / 'speʃl /

UK / ˈspɛʃəl /

A1
  • adjecitve
  • Being additional or extra
  • Different, better or greater than normal
  • noun
  • Heavily discounted sales item

basis

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US / ˈbeɪsɪs /

UK / ˈbesɪs /

A2
  • noun
  • Main ingredient or part of something
  • Starting situation, fact, idea to develop from

just

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US / dʒʌst /

UK / dʒʌst /

A1
  • adjecitve
  • Proper or appropriate; as is deserved
  • Doing or being what is right or fair
  • Legally correct; having enough evidence
  • adverb
  • Almost; nearly
  • Exactly at the time of
  • Exactly (the same as, like)

stroke

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US / strəʊk /

UK / strok /

B1
  • noun
  • When blood cannot get to brain, causing damage
  • Mark made by a pen, pencil or brush
  • One movement of oars on a boat
  • verb
  • To rub your hand in a caring way on something

those

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US / ðəʊz /

UK / ðoz /

A1
  • determiner
  • The people or things we are talking about
  • pronoun
  • The objects far from the speaker

benefit

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US / 'benɪfɪt /

UK / ˈbɛnəfɪt /

A2
  • noun
  • Good result or effect, something advantageous
  • verb
  • To have a good effect or be helpful

start

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US / stɑ:t /

UK / stɑrt /

A1
  • noun
  • First time or place that a thing exists; beginning
  • First opportunity to achieve something, e.g. a job
  • Sudden action or movement because you are scared
  • other
  • Beginning of something in place or time
  • verb
  • To do, be or happen for the first time; begin
  • To turn something on

logic

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US / ˈlɒdʒɪk /

UK / ˈlɑ:dʒɪk /

A2
  • noun
  • Proper, valid sensible reasoning
  • Scientific study of reasoning

never

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US / 'nevə(r) /

UK / ˈnɛvɚ /

A1
  • adverb
  • Not ever; not at any time

adjustment

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US / əˈdʒʌstmənt /

UK / əˈdʒʌstmənt /

A2
  • noun
  • Small change to attain a desired state or function
  • A change to make something function better

fact

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US / fækt /

UK / fækt /

A1
  • noun
  • Something that is known or proved to be true

for

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US / fə(r) /

UK / fɔr,fə /

A1
  • preposition
  • Used to show the purpose, or need of something

friction

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US / ˈfrɪkʃn /

UK / ˈfrɪkʃən /

B2
  • noun
  • Disagreement between two or more people
  • Force preventing motion between bodies in contact

individual

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US / ˌɪndɪˈvɪdʒuəl /

UK / ˌɪndəˈvɪdʒuəl /

A2
  • adjecitve
  • Made for use by one single person
  • Having a distinct manner different from others
  • noun
  • Single person, looked at separately from others

consumer

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US / kənˈsju:mə(r) /

UK / kənˈsumɚ /

A2
  • noun
  • Person who buys goods or services

nowadays

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US / ˈnaʊədeɪz /

UK / ˈnaʊəˌdez /

A2
  • adverb
  • At the present time; now

well

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US / wel /

UK / wɛl /

A1
  • adjecitve
  • Being in a fortunate, good condition or state
  • Healthy and in good condition
  • adverb
  • In an acceptable, proper, or successful manner
  • In a complete, total, or full manner
  • A great and considerable degree
  • In a successful way, in a good or satisfactory way
  • exclamation
  • Used to begin or continue a particular statement
  • Used to show you want to start saying something
  • Used to express that you are waiting for a reply
  • You say this to change the topic of a conversation
  • Used to indicate you are making a final remark
  • noun
  • Long deep hole in the ground to get water
  • verb
  • To cause your eyes to fill with tears

sound

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US / saʊnd /

UK / saʊnd /

A1
  • adjecitve
  • Sensible, dependable and reliable
  • Unbroken or undisturbed, as of sleep
  • Firm or solid in structure
  • Sane; not mentally ill
  • Clearly reasoned; involving sense, good judgment
  • noun
  • Unique quality that characterizes a style of music
  • Waves traveling in air or water that can be heard
  • verb
  • To seem or appear to be, from what was said
  • To say in a clear deliberate manner
  • To make a noise, e.g. to ring a bell

gasoline

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US / ˈgæsəli:n /

UK / ˈɡæsəˌlin, ˌɡæsəˈlin /

B2
  • noun
  • Liquid we put in cars to make them run

amount

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US / ə'maʊnt /

UK / əˈmaʊnt /

A1
  • noun
  • Quantity of something
  • verb
  • To add up to a certain figure

begin

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US / bɪ'ɡɪn /

UK / ˈbeɡɪn /

A1
  • verb
  • To do the first part of an action; to start

mercedes

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US / /

UK / /

A1

try

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US / traɪ /

UK / traɪ /

A1
  • noun
  • Act of putting the ball over the rugby goal line
  • verb
  • To make an effort, to attempt to do something
  • To examine someone or something in a court of law
  • To test to see if it is good or you like it
  • To make a person go through hardship; test
  • To examine something to see if it works

associate

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US / ə'səʊʃɪeɪt /

UK / əˈsoʊʃiˌeɪt /

B1
  • adjecitve
  • Part of a job title indicating a junior position
  • noun
  • Partner in professional work, e.g. in law
  • verb
  • To spend time with other people; mix with
  • To form a connection in your mind between things

massive

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US / ˈmæsɪv /

UK / ˈmæsɪv /

B1
  • adjecitve
  • Very big; large; too big

should

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US / ʃʊd /

UK / ʃʊd /

A1
  • other
  • Used to indicate what is proper or reasonable

production

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US / prəˈdʌkʃn /

UK / prəˈdʌkʃən, pro- /

A2
  • noun
  • Process of producing or growing food naturally
  • Process of making something on a large scale
  • Process of making a movie or TV show

small

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US / smɔ:l /

UK / smɔl /

A1
  • adjecitve
  • Little in size; not big
  • (Of letters) not written in capital letters
  • Being insignificant or minor
  • (Of a business) with few people or things; local
  • (Of voice) being soft and quiet
  • (Of a child) being young

subjective

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US / səbˈdʒektɪv /

UK / səbˈdʒɛktɪv /

C1
  • adjecitve
  • Using personal feelings and opinions not facts

balance

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US / ˈbæləns /

UK / ˈbæləns /

A2
  • noun
  • Instrument for weighing things
  • Being stable; having equal weight on both sides
  • Money remaining after paying costs
  • verb
  • To be steady by having equal weight on both sides
  • To make two or more things equal

weird

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US / wɪəd /

UK / wɪrd /

B1
  • adjecitve
  • Odd or unusual; surprising; strange

deny

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US / dɪ'naɪ /

UK / dɪˈnaɪ /

A2
  • verb
  • To refuse to allow or accept something

ever

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US / 'evə(r) /

UK / ˈɛvɚ /

A1
  • adverb
  • At any time; at all times in the future

once

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US / wʌns /

UK / wʌns /

A1
  • adverb
  • One time; one instance
  • At a time in the past
  • conjunction
  • When; as soon as

rid

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US / rɪd /

UK / rɪd /

A2
  • verb
  • To cause to no longer have (pest, problem)

somehow

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US / ˈsʌmhaʊ /

UK / ˈsʌmˌhaʊ /

A1
  • adverb
  • In a way that is not known or certain

develop

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US / dɪ'veləp /

UK / dɪˈvɛləp /

A1
  • verb
  • To explain something in steps and in detail
  • To create or think of something
  • To grow bigger, more complex, or more advanced
  • To make a photograph from film

indeed

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US / ɪnˈdi:d /

UK / ɪnˈdid /

A2
  • adverb
  • Actually; in fact; in reality

importantly

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US / ɪmˈpɔːtntli /

UK / ɪmˈpɔːrtntli /

A2
  • adverb
  • In an important way;

probably

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US / ˈprɒbəbli /

UK / ˈprɑbəbli /

A1
  • adverb
  • That is likely to happen or be true

will

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US / wɪl /

UK / wɪl /

A1
  • noun
  • Desire or choice of someone
  • Document saying who gets your money when you die
  • Strong desire to do something; determination
  • Desire to do something; strong wish to do
  • other
  • Used with verbs to express the future
  • verb
  • To leave property to someone after your death
  • To use mental effort to make something happen
  • Am (is, are) likely to do
  • To influence someone to do something
  • To make something happen by strongly wanting it

race

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US / reɪs /

UK / res /

A2
  • noun
  • Speed contest between people, animals or vehicles
  • People who share physical features or culture
  • verb
  • To take part in a running or swimming competition
  • To move or go at a very fast pace
  • To take someone, something to a place very quickly

occupy

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US / 'ɒkjʊpaɪ /

UK / ˈɑkjəˌpaɪ /

A2
  • verb
  • To enter and take control of land/property
  • To fill a time, a space, or an area
  • To live in a particular building
  • To fill someone's thoughts or make a person busy

age

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US / eɪdʒ /

UK / edʒ /

A1
  • verb
  • To keep food, wine for a long time to improve it
  • To get older
  • noun
  • Period of time in history
  • Number of years a person or thing has lived

matter

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US / 'mætə(r) /

UK / ˈmætɚ /

A1
  • noun
  • Material all things are made of that fills space
  • Problem or reason for concern
  • verb
  • To be of great importance; to count

use

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US / ju:s /

UK / ju:s /

A1
  • noun
  • Ability to employ something
  • Need to enable it to work
  • Permission to do something with something
  • Act of spending money
  • Operation of a machine for its function
  • verb
  • To have; to eat, drink, consume etc.
  • To need to operate or work
  • To operate a machine, e.g. a computer
  • To treat a person badly
  • To do something with, for a task or purpose

obviously

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US / ˈɒbviəsli /

UK / ˈɑːbviəsli /

A2
  • adverb
  • In a way that is obvious/easy to see or understand

side

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US / saɪd /

UK / saɪd /

A1
  • adjecitve
  • In addition to the central or most important thing
  • Next to, or very close to, the right or left of
  • noun
  • Position or opinion that is opposite to another
  • Right or left part of a person's body
  • Feature of someone's personality
  • Straight edge of an object
  • One of two or more groups fighting each other
  • verb
  • To decide to agree with one point, not the other

setup

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US / 'setʌp /

UK / ˈsɛtˌʌp /

B2
  • noun
  • Way something is organized or arranged

secondary

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US / ˈsekəndri /

UK / ˈsekənderi /

A1
  • adjecitve
  • Being of less importance than something else

rough

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US / rʌf /

UK / rʌf /

A2
  • adjecitve
  • Causing or involving violence, force, and harm
  • (Of situations) tough; difficult to get through
  • Being imprecise, inexact, and not detailed
  • Not gentle or not soft
  • Having an uneven or not smooth surface
  • Raw and natural
  • (Of sea weather etc.) not calm with strong winds
  • Involving or causing sudden, forceful movements
  • adverb
  • In a manner that is difficult, or violent
  • noun
  • Violent, loud, and unpleasant person
  • Incomplete drawing or draft done lacking detail
  • verb
  • To make something less smooth

sort

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US / sɔ:t /

UK / sɔrt /

A1
  • noun
  • Group or class of similar things or people
  • verb
  • To organize things by putting them into groups
  • To deal with things in an organized way

altitude

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US / 'æltɪtju:d /

UK / ˈæltɪˌtud,-ˌtjud /

B2
  • noun
  • Height of something above sea level

many

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US / 'menɪ /

UK / ˈmɛni /

A1
  • determiner
  • Used to refer a large number of things

successfully

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US / sək'sesfəlɪ /

UK / səkˈsɛsfəlɪ /

A2
  • adverb
  • In a manner that achieves a goal

distinction

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US / dɪˈstɪŋkʃn /

UK / dɪˈstɪŋkʃən /

A2
  • noun
  • Special quality that makes something different
  • A prize of award for a high level of achievement

here

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US / hɪə(r) /

UK / hɪr /

A1
  • adverb
  • In this place; at this location, position or time

manifold

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US / ˈmænɪfəʊld /

UK / ˈmænɪfoʊld /

C1
  • adjecitve
  • Having many and various things

charming

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US / ˈtʃɑːmɪŋ /

UK / ˈtʃɑːrmɪŋ /

A2
  • adjecitve
  • Being very likable; attractive
  • verb
  • To cause others to like you or do what you want

listen

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US / ˈlɪsn /

UK / ˈlɪsən /

A1
  • verb
  • To carefully consider what someone is saying

imaginable

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US / ɪˈmædʒɪnəbl /

UK / ɪˈmædʒənəbəl /

A2
  • adjecitve
  • Able to be imagined; possible

either

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US / ˈaɪðə(r) /

UK / ˈiðɚ, ˈaɪðɚ /

A1
  • adjecitve
  • One of two (used when there is a choice of two)
  • adverb
  • (After negative statements) likewise, in addition
  • conjunction
  • Used as the first of two connected things
  • determiner
  • Used as the first of two connected things
  • pronoun
  • The one or the other

peak

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US / pi:k /

UK / pik /

B1
  • noun
  • Part of a cap that sticks out over your eyes
  • The very top of a mountain
  • State when something is at its best
  • Time or point when the highest level occurs
  • verb
  • To reach the highest or best point

performance

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US / pə'fɔ:məns /

UK / pɚˈfɔrməns /

A2
  • noun
  • Act of doing something
  • Activity done to entertain an audience

scenario

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US / sɪˈnɑː.ri.əʊ /

UK / səˈner.i.oʊ /

B1
  • noun
  • An imagined sequence of events in a plan/project

market

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US / ˈmɑ:kɪt /

UK / ˈmɑ:rkɪt /

A1
  • noun
  • Need or demand for a particular product or service
  • Area or region where a certain product is sold
  • Public event where people sell goods on tables
  • Institution where stocks are bought and sold
  • verb
  • To publicize products to get you to buy; advertise

day

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US / deɪ /

UK / de /

A1
  • noun
  • A period of 24 hours beginning at midnight
  • The period of time when it is light outside
  • Person's name

rarity

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US / ˈreərəti /

UK / ˈrerəti /

A2
  • noun
  • Being not often done; something rarely seen

piston

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US / 'pɪstən /

UK / ˈpɪstən /

B2
  • noun
  • Sliding, cylindrical piece moved by fuel pressure

reason

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US / 'ri:zn /

UK / ˈrizən /

A1
  • noun
  • Ability to think about facts and form a judgment
  • Explanation for why something occurred or was done
  • verb
  • To think and make conclusions in a logical manner

after

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US / 'ɑ:ftə(r) /

UK / ˈæftɚ /

A1
  • adverb
  • Later than another time, or behind something
  • conjunction
  • Following something before
  • preposition
  • When an event happened or time has passed

plus

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US / plʌs /

UK / plʌs /

A2
  • noun
  • A benefit or advantage
  • preposition
  • In addition; add
  • In addition to; Indicates a number above
  • Having a value greater than zero

talent

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US / 'tælənt /

UK / ˈtælənt /

B1
  • noun
  • Natural ability of a person to do something well
  • Person with a strong natural ability in something

this

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US / ðɪs /

UK / ðɪs /

A1
  • adjecitve
  • Used to indicate something already been discussed
  • Used to indicate something happening around now
  • adverb
  • An indication by a physical motion or gesture
  • A specific amount of
  • determiner
  • Person, thing, or idea near you
  • pronoun
  • Person, thing that has already been discussed

five

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US / faɪv /

UK / faɪv /

A1
  • number
  • 5

follow

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US / ˈfɔləu /

UK / ˈfɑlo /

A1
  • verb
  • To come after someone; be guided by someone
  • To support someone, e.g. singer or comedian
  • To be the logical result of something
  • To happen after something else happens
  • To believe a set of values or a moral teacher
  • To understand something happening or being said

theoretical

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US / ˌθɪəˈretɪkl /

UK / ˌθiəˈrɛtɪkəl /

B1
  • adjecitve
  • Concerning the unproved aspects of a subject

simply

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US / ˈsɪmpli /

UK / ˈsɪmpli /

A1
  • adverb
  • In an easy or clear manner

run

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US / rʌn /

UK / rʌn /

A1
  • noun
  • Journey between two places made by ship or car
  • Series of similar things or successes and failures
  • Act of running; exercise of running
  • verb
  • To depart or travel according to a schedule
  • To cause an animal to move in a certain direction
  • (Of an engine) to be operating
  • To start or use a computer program
  • To flow in a certain direction, like a liquid
  • To manage or operate a business
  • To operate or drive something
  • (Of a road) to go from one place to another
  • To move your legs faster than walking

noticeable

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US / ˈnəʊtɪsəbl /

UK / ˈnoʊtɪsəbl /

B1
  • adjecitve
  • Being easy or likely to be sensed or noticed

how

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US / haʊ /

UK / haʊ /

A1
  • adjecitve
  • To what degree? in what amount?
  • adverb
  • (Used to explain the way to do something)
  • exclamation
  • For what purpose or reason?
  • (Used to ask someone or something's condition)

also

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US / 'ɔ:lsəʊ /

UK / ˈɔlso /

A1
  • adverb
  • In addition; too; in a similar way

other

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US / 'ʌðə(r) /

UK / ˈʌðər /

A1
  • adjecitve
  • A thing different from that mentioned
  • determiner
  • (Something) else; not the first (one)
  • pronoun
  • Being the one and only thing of that category

demand

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US / dɪ'mɑ:nd /

UK / dɪˈmænd /

A2
  • noun
  • Desire customers have to buy product, service
  • A strong request for someone to do something
  • verb
  • To strongly request someone to do something

into

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US / 'ɪntə /

UK / ˈɪntu /

A1
  • preposition
  • Moving or going inside something
  • In the same direction as; in the direction of
  • So as to become; taking the state of

kind

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US / kaɪnd /

UK / kaɪnd /

A1
  • adjecitve
  • In a caring and helpful manner
  • friendly and considerate
  • noun
  • One type of thing

state

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US / steɪt /

UK / stet /

A1
  • adjecitve
  • Concerning region within a country
  • noun
  • Region within a country, with its own government
  • Situation or condition something is in
  • verb
  • To say; declare as fact

make

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US / meɪk /

UK / mek /

A1
  • noun
  • Product made by a particular company; brand
  • verb
  • To arrange or prepare something e.g. dinner
  • To get to (a place) on time
  • To gain the status of (teacher, lawyer, etc.)
  • To create something by putting things together
  • To earn a certain amount of money at a job
  • To cause or force a person to do something
  • To cause something to happen or be formed

differently

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US / 'dɪfrəntlɪ /

UK / ˈdɪfərəntlɪ /

A2
  • adverb
  • In another and different manner

word

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US / wɜ:d /

UK / wɚd /

A1
  • noun
  • Unit of language that has a meaning
  • Promise
  • Short remark or piece of information
  • verb
  • To express something by choosing particular words

climate

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US / ˈklaɪmət /

UK / ˈklaɪmɪt /

A2
  • noun
  • Typical weather conditions in a particular place

perfect

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US / 'pɜ:fɪkt /

UK / ˈpɚfɪkt /

A1
  • adjecitve
  • So good it cannot be improved
  • verb
  • To do something so well, it cannot be done better

you

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US / jʊ /

UK / ju /

A1
  • pronoun
  • Person someone is speaking or writing to
  • Person or people in general

little

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US / 'lɪtl /

UK / ˈlɪtl /

A1
  • adjecitve
  • Being short in length of time
  • Not great in size, amount, or degree; small
  • Being very young or younger than others
  • adverb
  • By an amount or degree that is not very much
  • Not often; rarely
  • noun
  • A person's name

year

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US / jə: /

UK / jɪr /

A1
  • noun
  • Unit of time equal to 12 months or 365 or 366 days
  • Used to refer to the age of a person

average

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US / 'ævərɪdʒ /

UK / ˈævərɪdʒ, ˈævrɪdʒ /

A2
  • adjecitve
  • Typical or normal; usual; ordinary
  • noun
  • Total of numbers divided by the number of items
  • verb
  • To add numbers then divide by the number of items

answer

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US / 'ɑ:nsə(r) /

UK / ˈænsɚ /

A1
  • noun
  • Reply to a question someone asks
  • Solution to a problem or test question
  • verb
  • To reply to a question someone asks
  • To solve a test question or a problem

power

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US / 'paʊə(r) /

UK / ˈpaʊɚ /

A1
  • noun
  • Legal or official right to perform certain actions
  • Ability to move forcefully and quickly
  • Energy of something (e.g. electricity or fuel)
  • Mathematical way to multiply a number
  • Condition of being in political control
  • Physical force, energy, and strength
  • verb
  • To give energy to something, e.g. by electricity
  • To move something forcefully and quickly

the

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US / ðə /

UK / ðə /

A1
  • article
  • Used to refer to something already mentioned
  • Used to show there is only one of something
  • determiner
  • Used to describe all of a family

lead

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US / li:d /

UK / lid /

A1
  • adjecitve
  • Being the main part in movies or plays
  • noun
  • Wire for electricity, computer, etc.; cable
  • Information that could help to solve a crime
  • Main part in a play or movie
  • Heavy, gray metal element
  • Rope used to tie something to stop it escaping
  • Act of being at the front in a race or game
  • verb
  • To show the way or guide others
  • To be at the front of a race or game
  • To travel in front of; go in advance of others

sensible

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US / ˈsensəbl /

UK / ˈsɛnsəbəl /

A2
  • adjecitve
  • Able to judge something reasonably or fairly
  • Being useful/practical rather than fun/fashionable

rpm

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US / ˌɑ: pi: ˈem /

UK / ˌɑ:r /

A1
  • abbreviation
  • Revolutions per minute

mention

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US / 'menʃn /

UK / ˈmɛnʃən /

A2
  • noun
  • Act of referring to or talking about something
  • verb
  • To refer to or talk or write about something

let

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US / let /

UK / lɛt /

A1
  • verb
  • To allow someone to do something
  • Introducing a suggestion to do something together
  • To rent a house, etc. to others

one

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US / wʌn /

UK / wʌn /

A1
  • pronoun
  • You; we; people in general; someone
  • The thing or person previously referred to
  • adjecitve
  • Used to refer to people generally
  • Being a strong example of (something mentioned)
  • number
  • Number 1

may

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US / meɪ /

UK / me /

A1
  • noun
  • 5th month of the year
  • other
  • Used to express a desire
  • Expresses permission, possibility or probability
  • Used to show that a thing could be true

half

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US / hɑ:f /

UK / hæf, hɑf /

A1
  • adjecitve
  • Not complete
  • adverb
  • Partly; somewhat
  • noun
  • One of two equal periods of game time in a sport
  • The part you get when one is divided into two;

transversely

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US / ˈtrænzvɜːsli /

UK / trænzˈvɜrsli /

C1
  • adverb
  • In a transverse manner

three

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US / θri: /

UK / θri /

A1
  • number
  • Number 3

might

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US / maɪt /

UK / maɪt /

A1
  • other
  • Used to politely request an action
  • Used to express that something could happen
  • Power, strength, force or influence

than

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US / ðən /

UK / ðən /

A1
  • conjunction
  • Used to compare two things that are not equal

complexity

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US / kəm'pleksətɪ /

UK / kəmˈplɛksɪti /

B1
  • noun
  • State of having many parts and not being simple

nightmare

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US / ˈnaɪtmeə(r) /

UK / ˈnaɪtˌmɛr /

A2
  • noun
  • Frightening, difficult or displeasing experience
  • Frightening or upsetting dream while sleeping

order

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US / 'ɔ:də(r) /

UK / ˈɔrdɚ /

A1
  • noun
  • Religious or social group, as of nuns
  • Instructions to others to do what you want
  • State in which things are neat and organized
  • What you ask to buy, e.g. food in restaurant
  • Social or political control of an area
  • verb
  • To put things in a sequence, e.g. a, b, c
  • To give instructions to others to do what you want
  • To ask for something you want to buy, e.g. a meal

smoothness

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US / smu:ðnəs /

UK / ˈsmuðnɪs /

A2
  • noun
  • Texture without roughness; smooth to the touch

their

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US / ðɛː /

UK / ðer /

A1
  • determiner
  • Belonging to them

look

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US / lʊk /

UK / lʊk /

A1
  • noun
  • Person's beauty or physical attractiveness
  • Particular style of dress, clothes, or appearance
  • The way someone, something appears to be
  • Act of searching for or examining something
  • verb
  • To appear to be; seem

they

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US / ðeɪ /

UK / ðe /

A1
  • pronoun
  • Two or more people, animals, or things

result

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US / rɪ'zʌlt /

UK / rɪˈzʌlt /

A2
  • noun
  • Something produced through tests or experiments
  • Final score of a competition, election or game
  • verb
  • To be the outcome of other causes and effects

upmarket

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US / ˌʌpˈmɑ:kɪt /

UK / ˌʌpˈmɑ:rkɪt /

A1
  • adjecitve
  • Designed for consumers with high incomes

all

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US / ɔ:l /

UK / ɔl /

A1
  • adverb
  • Completely; totally
  • determiner
  • Being every one of something
  • pronoun
  • 100% of something; the complete amount

work

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US / wɜ:k /

UK / wɚk /

A1
  • adjecitve
  • Activity completed in order to make money
  • noun
  • The product of some artistic or literary endeavor
  • Everything created by an author, artist, musician
  • Activity you do in order to make money
  • Place of employment
  • Final product or result of a some labor or effort
  • verb
  • To bring into a specific state of success
  • To be functioning properly, e.g. a car
  • To do your job in your company or workplace
  • To make an effort to do something
  • To operate a machine or device

possible

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US / ˈpɒsəbl /

UK / ˈpɑsəbəl /

A1
  • adjecitve
  • Being able or appropriate for a task or purpose
  • Having a chance of happening, or being true

passenger

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US / 'pæsɪndʒə(r) /

UK / ˈpæsəndʒɚ /

A2
  • noun
  • Person who is traveling in a vehicle

between

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US / bɪˈtwi:n /

UK / bɪˈtwin /

A1
  • preposition
  • From one person, thing, or place, to another
  • In the space that separates two objects
  • Among two or more people who share something

engine

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US / 'endʒɪn /

UK / ˈɛndʒɪn /

A2
  • noun
  • Machine that changes energy into mechanical motion
  • The part of a train that pulls railway cars

install

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US / ɪnˈstɔ:l /

UK / ɪnˈstɔl /

A2
  • verb
  • To set up equipment so that it is ready to use
  • To place someone officially in a job position

pretty

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US / 'prɪtɪ /

UK / ˈprɪti /

A1
  • adjecitve
  • Being attractive to the eye in a simple way
  • adverb
  • Very; to a great degree

whereas

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US / ˌweərˈæz /

UK / hwɛrˈæz, wɛr- /

A2
  • conjunction
  • Taking into consideration the fact that

length

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US / leŋθ /

UK / leŋθ /

A2
  • noun
  • Distance from one end of a pool to the other
  • Measurement of distance or of time

agree

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US / əˈgri: /

UK / əˈɡri /

A1
  • verb
  • To have the same opinion as someone else

both

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US / bəuθ /

UK / boθ /

A1
  • determiner
  • Used to refer to two things at the same time
  • pronoun
  • Used to refer to two things at the same time

top

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US / tɒp /

UK / tɑp /

A1
  • adjecitve
  • Being good or great; excellent
  • Being the most in degree or quality
  • noun
  • Item of clothing covering shoulders to waist, hips
  • A cover or lid
  • Part (e.g. road) that is the furthest away
  • Highest or upper part or point of something
  • Best or highest status or position
  • Flat upper surface or edge of an object
  • Child's toy that spins on its point
  • Upper section or leaves of fruits and vegetables
  • Winning in a sport or contest
  • verb
  • To be higher or larger than a specific value
  • To arrive at the highest point of something
  • To put a cover or layer or over something
  • To kill; murder
  • To hold the highest position on a list
  • To be more important, successful or better than
  • To beat someone or win at a game

offering

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US / ˈɒfərɪŋ /

UK / ˈɔfərɪŋ,ˈɑfə- /

A1
  • noun
  • Something offered to God or gods as act of worship
  • verb
  • To suggest a price you are willing to pay
  • To give the opportunity to accept something
  • To say you are willing to do something
  • To give or say something as an act of worship

everything

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US / 'evrɪθɪŋ /

UK / ˈɛvriˌθɪŋ /

A1
  • pronoun
  • All of the things mentioned

configuration

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US / kənˌfɪgəˈreɪʃn /

UK / kənˌfɪɡjəˈreʃən /

B2
  • noun
  • A shape or outline; a method of arrangement

bit

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US / bɪt /

UK / bɪt /

A1
  • noun
  • Device put in a horse's mouth to control it
  • Small piece of something
  • verb
  • (E.g. of fish) to take bait and be caught

take

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US / teɪk /

UK / tek /

A1
  • noun
  • Filming of a single scene for TV or the movies
  • verb
  • To accept something that is offered
  • To use a method of traveling, e.g. a bus or train
  • To use a camera to make (a photo)
  • To pick up something and go away with it
  • To study a subject in school
  • To attempt to pass (an exam)
  • To require a certain amount of time, money, space

its

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US / ɪts /

UK / ɪts /

A1
  • adjecitve
  • Referring to or belonging to ‘it’
  • determiner
  • Of something; belonging or related to something
  • other
  • Possessive form of “it”

very

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US / 'verɪ /

UK / ˈvɛri /

A1
  • adjecitve
  • Concerning a large degree or amount
  • adverb
  • A lot; much; many
  • Used to stress or emphasize a noun

way

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US / weɪ /

UK / we /

A1
  • adverb
  • Used to emphasize the amount of something
  • noun
  • Particular aspect of something being thought about
  • One of various choices that could be made
  • Particular existing condition or state
  • (Often long) distance or length of time
  • How something is done
  • Route to go to a place
  • Small street
  • Usual behavior, emotions or habits of someone

space

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US / speɪs /

UK / spes /

A1
  • noun
  • Empty area kept for a specific reason, like a car
  • Empty area with nothing in it
  • Area in the sky where the stars are
  • Area between written words on a page
  • verb
  • To make a certain distance or time between

common

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US / 'kɒmən /

UK / ˈkɑmən /

A1
  • adjecitve
  • Shared; Belonging to or used by everyone
  • Typical, normal; not unusual
  • noun
  • Area in a city or town that is open to everyone
  • Field near a village owned by the local community

introduce

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US / ˌɪntrəˈdju:s /

UK / ˌɪntrəˈdus, -ˈdjus /

A1
  • verb
  • To open an essay to set the scene
  • To guide or explain something, e.g. a town
  • To begin the use of a new thing or practice
  • To make someone known to another by name
  • To insert or put something inside another thing

volvo

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US / ˈvoʊlvoʊ /

UK / /

A1

else

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US / els /

UK / ɛls /

A1
  • adverb
  • Otherwise; if you fail to
  • (Of person place thing etc.) besides; in addition

simple

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US / 'sɪmpl /

UK / ˈsɪmpəl /

A1
  • adjecitve
  • Not hard to understand or do; not complex
  • Having only a few parts; not complex
  • Being ordinary or normal
  • Being plain; without a lot added for style

twin

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US / twɪn /

UK / twɪn /

A2
  • noun
  • Two children born from same mother at same time
  • One of two things that closely resemble each other

add

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US / æd /

UK / æd /

A1
  • verb
  • To include as well
  • To put two things or numbers together, e.g. 2+2

our

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US / 'aʊə(r) /

UK / aʊr /

A1
  • determiner
  • Belonging to us

proportional

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US / prəˈpɔ:ʃənl /

UK / prəˈpɔ:rʃənl /

B1
  • adjecitve
  • Having a size appropriate to the size of another

but

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US / bət /

UK / bʌt,bət /

A1
  • conjunction
  • Used before you say something different, opposite

nearly

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US / ˈniəli /

UK / ˈnɪrli /

A1
  • adverb
  • Not completely; almost

trim

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US / trɪm /

UK / trɪm /

B2
  • verb
  • To cut (hair, etc.) to make it neater/shorter

incredibly

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US / ɪnˈkredəbli /

UK / ɪnˈkrɛdəblɪ /

A2
  • adverb
  • To a great degree; very; amazingly

child

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US / tʃaɪld /

UK / tʃaɪld /

A1
  • noun
  • A very young person, between about 2 and 15

quite

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US / kwaɪt /

UK / kwaɪt /

A1
  • adverb
  • Not very; fairly
  • Very; In a complete or total manner

single

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US / 'sɪŋɡl /

UK / ˈsɪŋɡəl /

A1
  • adjecitve
  • Being one only, without others
  • Only; merely
  • Not married or in a relationship
  • noun
  • One run in cricket or a hit baseball
  • An individual song from a CD or album
  • Person who is not married or in a relationship

perform

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US / pə'fɔ:m /

UK / pɚˈfɔrm /

A1
  • verb
  • To carry out an action well or successfully
  • To entertain an audience by dancing, singing etc.

zero

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US / ˈzɪərəʊ /

UK / ˈzɪroʊ /

A1
  • noun
  • Temperature when water turns to ice
  • number
  • Number 0
  • verb
  • To set a scale or other device to show 0

especially

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US / ɪˈspeʃəli /

UK / ɛˈspɛʃəli, ɪˈspɛʃ- /

A1
  • adverb
  • More than usual; extremely

horrible

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US / ˈhɒrəbl /

UK / ˈhɔrəbəl, ˈhɑr- /

A2
  • adjecitve
  • Very bad; causing annoyance, distaste or fear

resolve

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US / rɪ'zɒlv /

UK / rɪˈzɑlv /

B1
  • verb
  • To make a decision to do something
  • To find an answer, solution to a problem/ question
  • To change gradually into a different form
  • To decide to try to do something
  • To change into something, other parts, etc.

box

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US / bɒks /

UK / bɑ:ks /

A1
  • noun
  • A marked area of a baseball field
  • A container with four straight sides and a lid
  • Area of seating in a theater separated from others
  • A 4 sided container or shape printed on a page
  • Entire amount of something inside a container
  • verb
  • To strike someone on the side of the head
  • To pack an object in a six-sided container
  • To fight with gloved hands as a sport

carburettor

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US / ˌkɑːbəˈretə(r) /

UK / ˈkɑːrbəreɪtər /

A1
  • noun
  • Mixes air with gasoline vapor prior to explosion

want

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US / wɔnt /

UK / wɑnt, wɔnt /

A1
  • noun
  • Something you desire or wish for
  • State or condition of poverty
  • verb
  • To desire or wish for something; hope for a thing

distribute

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US / dɪˈstrɪbju:t /

UK / dɪˈstrɪbjut /

A2
  • verb
  • To hand out or give to people
  • To send products to stores to sell
  • To spread something over an area

now

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US / naʊ /

UK / naʊ /

A1
  • adverb
  • At the present time or moment
  • Right away or in the next possible moment
  • Used to refer to something that just happened
  • Time between the present and a moment in the past
  • conjunction
  • Resulting from or because of something

really

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US / ˈri:əli /

UK / ˈriəˌli, ˈrili /

A1
  • adverb
  • Used to stress something that is said; definitely
  • In a true or accurate manner
  • Very

favour

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US / ˈfeɪvə(r) /

UK / ˈfevɚ /

A2
  • noun
  • What someone asks of you; helpful act; a kindness
  • verb
  • To prefer or promote over another

imbalance

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US / ɪm'bæləns /

UK / ɪmˈbæləns /

A2
  • noun
  • A lack of equality so two things are not equal

oddball

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US / ˈɒdbɔ:l /

UK / ˈɑ:dbɔ:l /

C1
  • noun
  • Person with an unusual or odd personality

nobody

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US / ˈnəʊbədi /

UK / ˈnoʊbədi /

A1
  • pronoun
  • No person; no one; not any person

become

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US / bɪ'kʌm /

UK / bɪˈkʌm /

A1
  • verb
  • To begin to be; grow to be; develop into
  • To be suitable for a particular job or role

good

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US / ɡʊd /

UK / ɡʊd /

A1
  • adjecitve
  • Proper, appropriate or right
  • (Of an amount) enough; plenty
  • Excellent; high quality
  • Acting well or properly; of moral character
  • In a positive or happy emotional state
  • noun
  • Advantage or benefit

understand

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US / ˌʌndə'stænd /

UK / ˌʌndɚˈstænd /

A1
  • verb
  • To know the meaning of language, what someone says

illustrate

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US / ˈɪləstreɪt /

UK / ˈɪləˌstret, ɪˈlʌsˌtret /

A2
  • verb
  • To supply pictures to go along with words
  • To be an example that explains or proves something

exclusively

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US / ɪk'sklu:sɪvlɪ /

UK / ɪkˈsklusɪvlɪ /

B2
  • adverb
  • For the use of only one person or group

justify

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US / ˈdʒʌstɪfaɪ /

UK / ˈdʒʌstəˌfaɪ /

B1
  • verb
  • To give good reasons for something

overlap

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US / ˌəʊvəˈlæp /

UK / ˌoʊvərˈlæp /

B1
  • noun
  • Amount shared in the same space, form, idea
  • verb
  • To lie over or cover a part of something else
  • To happen at the same time as another event
  • To share qualities or functions

would

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US / wʊd /

UK / wʊd /

A1
  • other
  • Used to indicate something imagined
  • Used to ask or request something politely
  • Verb used to indicate possibility, request etc.
  • Used to indicate a preference
  • Used to indicate a reaction
  • Indicates something that occurred repeatedly
  • Used to indicate willingness or ability to do

smooth

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US / smu:ð /

UK / smuð /

A2
  • adjecitve
  • Moving without stops and starts
  • Pleasant and flat to touch, not rough
  • Being free from problems or difficulties
  • verb
  • To make something rough feel flat, e.g. by ironing
  • To spread a substance over a surface

powerful

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US / ˈpauəful /

UK / ˈpaʊəfəl /

A2
  • adjecitve
  • Having control or influence over
  • Having a lot of physical force, energy, strength

can

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US / kæn /

UK / kən,kæn /

A1
  • noun
  • A metal container for storing food
  • other
  • Able to; have the skill to; have the time to
  • verb
  • To have permission to
  • To be possible to do
  • To preserve food by sealing it in a metal container

visualize

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US / ˈvɪʒuəlaɪz /

UK / ˈvɪʒuəˌlaɪz /

B1
  • verb
  • To create a picture in your mind of something

not

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US / nɒt /

UK / nɑt /

A1
  • adverb
  • Word indicating the negative
  • (Used to form the negative of verbs)

runner

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US / 'rʌnə(r) /

UK / ˈrʌnɚ /

A1
  • noun
  • Person whose job it is to deliver messages
  • A rail on which a drawer or curtain slides
  • Person who runs for exercise or for a sport

fuel

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US / 'fju:əl /

UK / ˈfjuəl /

A2
  • noun
  • Material used to produce heat or power when burned
  • verb
  • To give power to (a mob, anger, etc.); incite
  • To provide gas or petrol for something

fix

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US / fɪks /

UK / fɪks /

A2
  • noun
  • Answer to a problem
  • verb
  • To arrange or prepare something
  • To attach something so it will not move or change
  • To dishonestly arrange the result of a game
  • To make an animal unable to produce young
  • To make something whole or able to work again

same

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US / seɪm /

UK / sem /

A1
  • adjecitve
  • Being equal in quality and amount
  • Identical; not different
  • Not changing; constant

niche

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US / nɪtʃ /

UK / ni:ʃ /

B2
  • noun
  • Small part of a market representing an opportunity
  • Area with all specific plant/animal needs to live
  • A specialized business, job or activity
  • Space cut into a wall, as to display a statue

tune

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US / tju:n /

UK / tun, tjun /

A2
  • noun
  • Group of musical notes that make a pleasant sound
  • verb
  • To make adjustments to equipment to make it better
  • To adjust to be at the right musical pitch
  • To modify how something operates, looks, e.g. car

usually

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US / ˈju:ʒuəli /

UK / ˈjuːʒuəli /

A1
  • adverb
  • Normally; regularly

champion

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US / 'tʃæmpɪən /

UK / 'tʃæmpɪən /

A2
  • noun
  • Person who fights for or supports strongly
  • verb
  • To support or fight for something you believe in

number

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US / ˈnʌmbə(r) /

UK / ˈnʌmbɚ /

A1
  • noun
  • Symbols such as 1, 2, 56, 793
  • Particular song or dance performed during a show
  • Total quantity or amount of things
  • verb
  • To put numbers on things
  • To assign a sequence within a group, series, set
  • To claim to be part of a larger group, series, set

difficulty

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US / ˈdɪfɪkəlti /

UK / ˈdɪfɪˌkʌlti, -kəl- /

A1
  • noun
  • Something that is hard to do

then

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US / ðen /

UK / ðɛn /

A1
  • adverb
  • A time that is not now
  • Following another thing in time or arrangement
  • Following on reasonably from what was just stated
  • At that time, not now

different

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US / ˈdɪfrənt /

UK / ˈdɪfrənt /

A1
  • adjecitve
  • Not of the same kind; unlike other things

each

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US / i:tʃ /

UK / itʃ /

A1
  • determiner
  • Every one of two or more things
  • pronoun
  • Per one person or thing

yeah

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US / jeə /

UK / ˈjɛə, ˈjæə, jɛ- /

A1
  • exclamation
  • Another way of saying 'yes'

offer

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US / 'ɒfə(r) /

UK / ˈɔfɚ, ˈɑfɚ /

A1
  • noun
  • Price you say you are willing to pay for something
  • Act of making a thing available to be accepted
  • verb
  • To suggest a price you are willing to pay
  • To give the opportunity to accept something
  • To say you are willing to do something
  • To give or say something as an act of worship

primary

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US / 'praɪmərɪ /

UK / ˈpraɪˌmɛri, -məri /

B2
  • adjecitve
  • Most important, most basic or essential
  • Happening first; earliest
  • of or for the teaching of young children

bottom

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US / 'bɒtəm /

UK / ˈbɑtəm /

A2
  • adjecitve
  • Concerning the part under something, e.g. a vase
  • noun
  • The part of your body you sit on
  • Lowest position, often in a company or contest
  • Lowest part of something; part on which it rests
  • Lowest level, part or point of an object
  • The part under something, e.g. a vase
  • verb
  • To hit the lowest part of something

right

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US / raɪt /

UK / raɪt /

A1
  • adjecitve
  • Correct or true
  • The south side of you looking at the rising sun
  • adverb
  • Exactly in a place or time
  • Being appropriate for a particular event
  • In a straight or direct manner
  • noun
  • Something you are legally or morally allowed to do
  • Ideal of what is just and good
  • Political view based on conservatism
  • verb
  • To fix something previously wrong or unjust
  • To make upright, as a boat that has turned over

happen

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US / 'hæpən /

UK / ˈhæpən /

A1
  • verb
  • To take place or occur

jump

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US / dʒʌmp /

UK / dʒʌmp /

A1
  • noun
  • Large sudden increase
  • An act of springing into the air
  • Bar or other thing that is jumped over
  • A sudden movement due to surprise
  • verb
  • To attack someone suddenly
  • To push your body into the air with your legs
  • To suddenly decide to do something
  • To make a sudden movement due to surprise

barely

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US / ˈbɛəli /

UK / ˈbɛrli /

A2
  • adverb
  • Only just; just possible

rotation

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US / rəʊˈteɪʃn /

UK / roʊˈteɪʃn /

B2
  • noun
  • Regular change of the crops grown in a field
  • Group who take turns performing a certain task
  • Regularly changing the time when people work
  • Movement in a circle around a central point

get

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US / ɡet /

UK / ɡɛt /

A1
  • verb
  • To become affected by illness or disease
  • To begin to feel or understand an emotion or idea
  • To send or bring someone or something home, etc.
  • To go somewhere to obtain something
  • To (cause to) do a particular thing
  • To obtain, receive or be given something
  • To currently have
  • To prepare for use
  • To understand something being said or read

what

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US / wɒt /

UK / hwɑt, hwʌt, wɔt, wʌt,hwət, wət /

A1
  • pronoun
  • Thing or things that; the same kind as
  • Used to emphasize something you are about to say
  • adjecitve
  • Used to refer to a particular amount, or number
  • Used to place emphasis on a particular quality
  • adverb
  • To a certain degree
  • determiner
  • Question words used for asking for information
  • exclamation
  • Used to express excitement, shock, or surprise
  • Used to ask people to repeat something they said

mean

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US / mi:n /

UK / min /

A1
  • adjecitve
  • Being good at
  • Nasty; unkind
  • Not liking to spend money; cheap; stingy
  • noun
  • Average of a set of numbers
  • verb
  • To express a particular idea or thought
  • To intend to do something in particular
  • To have a particular meaning or value

adjacent

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US / əˈdʒeɪsnt /

UK / əˈdʒesənt /

B1
  • adjecitve
  • Being close or near to a border, wall, or point

include

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US / ɪnˈklu:d /

UK / ɪnˈklud /

A1
  • verb
  • To make someone, something part of a group

despite

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US / dɪˈspaɪt /

UK / dɪˈspaɪt /

A2
  • preposition
  • Without being affected by something; in spite of

fire

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US / 'faɪə(r) /

UK / faɪr /

A1
  • noun
  • Heat and the flame produced when burning
  • Intense energy for or about something
  • verb
  • To apply heat to something to make it hard
  • To make a person leave their job; dismiss
  • To shoot a gun or weapon
  • To launch something into the sky, e.g. a rocket
  • To start working on something e.g. a project

even

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US / 'i:vn /

UK / ˈivən /

A1
  • adjecitve
  • Being equal in influence, power, possibility etc.
  • Being divided equally or fairly
  • (Of teams/contest) with similar chances of success
  • Smooth, level, or regular
  • Can be divided by 2; ending in 2, 4, 6, 8, or 0
  • At a regular, equally steady manner
  • Remaining steady and unchanging
  • adverb
  • (When this is surprising) as well; too
  • (Used to compare two things/stress the difference)
  • verb
  • To make something level; to flatten
  • To make something equal

suck

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US / sʌk /

UK / sʌk /

B1
  • noun
  • Drawing of liquid into a tube or hole
  • phrasal verb
  • To trick or deceive someone into doing something
  • verb
  • To be very bad, undesirable or unpleasant
  • To be very bad, undesirable, or unpleasant
  • To pull or remove something with great power
  • To attract someone; make someone interested
  • To draw into your mouth through a small hole

tell

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US / tel /

UK / tɛl /

A1
  • verb
  • To (strongly) advise a person to do something
  • To be able to guess
  • To say or communicate information to someone
  • To inform, but without speaking; indicate
  • To have a negative effect on someone
  • To order someone to do something; command
  • To recognize something based on certain signs
  • To report something to an authority
  • To explain something or teach someone something

like

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US / laɪk /

UK / laɪk /

A1
  • adjecitve
  • Being equal in status or kind to something else
  • Similar; the same
  • adverb
  • For example
  • preposition
  • Used as a filler; used to ad emphasis
  • In a way similar to the way something is done
  • Such as; for example
  • verb
  • To want to
  • To find something pleasing; to prefer something

catch

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US / kætʃ /

UK / kætʃ, kɛtʃ /

A1
  • noun
  • Amount of something that has been caught
  • Trick or something trying to deceive
  • verb
  • To stop something flying and hold it
  • To stop something and not let it go, e.g. animals
  • To get sick or get a disease from someone else
  • To find someone to do something, a task
  • To get stuck on or in something
  • To be trapped so you can’t escape
  • To be able to understand what someone is saying

injector

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US / ɪn'dʒektə /

UK / ɪn'dʒektə /

B1
  • noun
  • Device for injecting fluids into an engine, etc.

about

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US / ə'baʊt /

UK / əˈbaʊt /

A1
  • adverb
  • To be ready to; going to
  • Nearly; approximately; roughly
  • Near; next to; close to
  • In every direction; in the area of
  • preposition
  • Concerning or of (a topic)

suitable

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US / ˈsu:təbl /

UK / ˈsutəbəl /

A2
  • adjecitve
  • Right for a particular purpose or occasion
  • (Of clothes) appropriate for a given occasion

instantly

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US / ˈɪnstəntli /

UK / ˈɪnstəntli /

A2
  • adverb
  • In a manner without delay; immediately

interesting

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US / ˈɪntrəstɪŋ /

UK / ˈɪntrɪstɪŋ, -tərɪstɪŋ, -təˌrɛstɪŋ /

A1
  • adjecitve
  • Taking your attention; making you want to know
  • verb
  • To make someone want to know about something
  • To persuade to do, become involved with something

perspective

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US / pə'spektɪv /

UK / pɚˈspɛktɪv /

B1
  • noun
  • Artistic method of creating a sense of distance
  • Ability to understand what is important in life

own

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US / əʊn /

UK / on /

A1
  • adjecitve
  • Belong to oneself
  • determiner
  • Yours, his, hers, etc.; not belonging to another
  • pronoun
  • (Something) belong to myself
  • verb
  • To have something as your property

mainstream

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US / ˈmeɪnstri:m /

UK / ˈmenˌstrim /

C2
  • adjecitve
  • considered normal, and having or using ideas, beliefs, etc. that are accepted by most people
  • noun
  • Prevailing current of thought

typical

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US / ˈtɪpɪkl /

UK / ˈtɪpɪkəl /

A2
  • adjecitve
  • Normal; usual; expected

again

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US / ə'ɡen /

UK / əˈɡɛn /

A1
  • adverb
  • One more time, once more

shaft

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US / ʃɑ:ft /

UK / ʃæft /

B2
  • noun
  • Vertical, sloping passageway leading to a surface
  • verb
  • To ruin the plans or prospects of others

great

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US / ɡreɪt /

UK / ɡret /

A1
  • adjecitve
  • Very large in size
  • Very important
  • Very good; fantastic; wonderful
  • adverb
  • Very good; better than before
  • noun
  • Successful and well-admired person

bother

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US / 'bɒðə(r) /

UK / ˈbɑðɚ /

A2
  • noun
  • Problems, concern or worry for someone
  • A disturbance; trouble
  • verb
  • To cause problems, concerns or worry for someone
  • To take the trouble to do something

place

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US / pleɪs /

UK / ples /

A1
  • noun
  • Particular location, area or region
  • verb
  • To put someone in a particular type of situation
  • To put something in a certain location or position

force

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US / fɔ:s /

UK / fɔrs, fors /

A1
  • noun
  • Group of persons trained for military action; army
  • Pressure; attraction
  • The use of physical strength/violence to persuade
  • verb
  • To use physical strength or violence to persuade

select

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US / sɪ'lekt /

UK / sɪˈlɛkt /

A2
  • verb
  • To choose a suitable thing from a group

directly

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US / dəˈrektli /

UK / dɪˈrɛktli, daɪ- /

A2
  • adverb
  • In a frank and honest way
  • Right away; immediately

honda

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US / ˌhəʊməˈsekʃuəl /

UK / ˌhoʊməˈsekʃuəl /

A1

that

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US / ðæt /

UK / ðæt, ðət /

A1
  • adjecitve
  • The person or thing being talked about
  • Used to identify something both the speakers know
  • adverb
  • Used to reinforce adjectives and adverbs
  • To such a degree
  • conjunction
  • Used to connect a noun clause
  • Used to introduce an adverbial clause
  • Used to introduce a noun clause
  • determiner
  • Used as a noun to refer to something
  • pronoun
  • Referring an object far away
  • Used to refer to the relative pronoun ‘which’

cylinder

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US / ˈsɪlɪndə(r) /

UK / ˈsɪləndɚ /

B2
  • noun
  • Tube shape with flat ends

torque

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US / tɔ:k /

UK / tɔrk /

B2
  • noun
  • Turning or twisting force

first

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US / fɜ:st /

UK / fɚst /

A1
  • adjecitve
  • 1st; Coming before all others in time or place
  • noun
  • Something that has not happened before
  • Position of the winner of a competition

rely

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US / rɪ'laɪ /

UK / rɪˈlaɪ /

B2
  • verb
  • Depend on with full trust or confidence

see

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US / si: /

UK / si /

A1
  • verb
  • To go on a date with someone
  • To predict whether something is, or will be true
  • To understand what someone says
  • To use your eyes to look at something
  • To visit a place often for sightseeing or pleasure
  • To visit or meet with someone
  • To find out by waiting or looking
  • To watch (a game, movie or TV show)

canada

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US / 'kænədə /

UK / ˈkænədə /

A1
  • proper noun
  • A country in northern North America, the second largest country in the world; population 35,900,000

charm

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US / tʃɑ:m /

UK / tʃɑrm /

A2
  • noun
  • Quality of making people like you; attractiveness
  • verb
  • To cause others to like you or do what you want

nor

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US / nɔ:(r) /

UK / nɔr /

A2
  • conjunction
  • Not this or that; also not

could

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US / kəd /

UK / kʊd /

A1
  • other
  • Past form of 'can' to mean have ability
  • Used to ask for something politely, or to offer

before

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US / bɪˈfɔ:(r) /

UK / bɪˈfɔr,-ˈfor /

A1
  • adverb
  • At a time earlier than the present; previously
  • conjunction
  • In advance of something happening
  • preposition
  • In front of someone or something

problem

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US / ˈprɒbləm /

UK / ˈprɑbləm /

A1
  • adjecitve
  • Causing trouble
  • noun
  • Something difficult to deal with or causes trouble
  • Question to show understanding of a math concept

cover

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US / 'kʌvə(r) /

UK / ˈkʌvɚ /

A1
  • noun
  • A different version of another song
  • Bed sheets; blankets
  • (Police or military) protection from attack
  • Amount of money to be paid in an insurance claim
  • Thing you put over something to close or hide it
  • Front and back part of a book or magazine
  • Shelter built to protect from the natural elements
  • verb
  • To record a different version of another song
  • To include as part of its area
  • To put something over something to hide it
  • To discuss a subject in a talk or meeting
  • To form a layer over something so it is hidden
  • To have sufficient funds to pay for something
  • To include something within an agreed limit
  • To report news on TV, radio or in a newspaper
  • (Police or military) to protect from attack
  • To travel a certain distance in a given time
  • To wrap something with something, such as a cloth

handful

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US / 'hændfʊl /

UK / ˈhændˌfʊl /

B1
  • noun
  • an amount of something that can be held in one hand; small quantity or amount of people or things
  • A thing requiring great effort to control, manage

mature

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US / məˈtʃʊə(r) /

UK / məˈtʃʊr /

A2
  • adjecitve
  • Behaving like an adult
  • Being fully developed physically
  • verb
  • (Wine, cheese) To age to improve its taste

exist

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US / ɪɡ'zɪst /

UK / ɪɡˈzɪst /

A1
  • verb
  • To be present, alive or real

feed

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US / fi:d /

UK / fid /

A2
  • noun
  • Food given to animals
  • verb
  • To give food, e.g. to animals or a baby
  • To push something through an opening
  • To provide necessary supplies to

with

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US / wɪð /

UK / wɪð, wɪθ /

A1
  • preposition
  • As an employee of a certain company
  • Against something or someone
  • By using something as a means
  • Due to; because of
  • Including
  • Possessing as a feature
  • Related to
  • (Of the manner/attitude by which you do something)
  • Used to express that people or things are together

manage

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US / ˈmænɪdʒ /

UK / ˈmænɪdʒ /

A1
  • verb
  • To survive hardships and difficulties; to cope
  • To run or operate a business by directing others

have

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US / həv /

UK / hæv /

A1
  • verb
  • To drink, smoke, eat or use something
  • To experience the effects of something
  • To organize an event, or join in an activity
  • To own, possess, or hold something
  • To cause to happen or produce a particular effect

car

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US / kɑ:(r) /

UK / kɑr /

A1
  • noun
  • A vehicle with wheels and engine to carry people

end

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US / end /

UK / ɛnd /

A1
  • noun
  • The point where a process or activity stops
  • A point that marks the limit of something; finish
  • Goal or desired result
  • The tip, edge or limit of something
  • verb
  • To be the last part of something

six

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US / sɪks /

UK / sɪks /

A1
  • number
  • 6

intake

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US / ˈɪnteɪk /

UK / ˈɪnˌtek /

B1
  • noun
  • Amount of something that a person's body consumes
  • Act of consuming something
  • Opening where air or liquid enters a machine

via

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US / ˈvaɪə /

UK / ˈvaɪə, ˈviə /

B1
  • preposition
  • By the means of using something
  • By going through, by way of

waste

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US / weɪst /

UK / west /

A2
  • noun
  • Materials left over after a process has finished
  • verb
  • To kill or severely harm someone
  • To use valuable things ineffectively

know

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US / nəʊ /

UK / noʊ /

A1
  • verb
  • To be familiar with a person or place, thing
  • To feel sure or be convinced about something
  • To discover or be aware of something
  • To be able to distinguish
  • To have knowledge of things

unequal

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US / ʌnˈi:kwəl /

UK / ʌnˈikwəl /

A2
  • adjecitve
  • Unfair; biased in someone's favor
  • Varying in number, amount, quality, etc.
  • Not being strong enough to do a task

dictate

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US / dɪk'teɪt /

UK / ˈdɪkˌtet /

B1
  • verb
  • To speak while someone writes down your words
  • To make a thing necessary
  • To order that something should happen

decade

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US / ˈdekeɪd /

UK / ˈdɛkˌed, dɛˈked /

B1
  • noun
  • Period of 10 years

increase

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US / ɪn'kri:s /

UK / ɪnˈkris /

A1
  • noun
  • Fact of increasing; amount something grows by
  • verb
  • To make or become larger in size or amount
  • Introduction to Video Content
  • Inline-5 engines, also known as straight-5 engines, are a rare engine configuration that is only used by a few manufacturers. Despite their rarity, they offer some interesting benefits. However, what's even more intriguing is the fact that gasoline inline-5 engines were not produced before 1976. This is surprising considering that there were numerous engine configurations in existence prior to that year, ranging from singles to twins to inline-3s, inline-4s, inline-6s, inline-8s, V-6s, V-8s, and even V-12s. So, why weren't inline-5 engines developed earlier? The answer lies in the maturity of fuel injection technology. Prior to the 1970s, fuel injection technology had not advanced enough to be successfully utilized in engines. And why is fuel injection important for inline-5 engines? Well, the reason is that these engines aren't compatible with carburetors. Even though we were able to carburete engines with various cylinder configurations, such as singles and V-12s, inline-5 engines present a unique challenge. It's not because of the odd number of cylinders, as inline-3 engines were successfully carbureted before inline-5 engines were even invented. To understand the issue, let's visualize it. When we examine an inline-5 engine, we can see that the problem arises from the different lengths of the intake manifold runners. Due to the long length of the engine and the odd number of cylinders, we are faced with a significant difference in the length of the runners. This discrepancy can result in unequal performance among individual cylinders, leading to an engine that runs rough.
  • Subtitles section
  • This is an inline-5, a.k.a.
  • A straight-5 engine, and it's a very uncommon engine configuration employed by only a handful of manufacturers, despite offering some very interesting benefits.
  • But what's more interesting than its rarity is the fact that gasoline inline-5 engines were not made before 1976.
  • Now we made pretty much every configuration imaginable long before 1976, everything from singles to all kinds of twins to inline-3s, inline-4s, inline-6s, even inline-8s, V-6s, V-8s, V-12s, you name it.
  • We even made complex oddball stuff like narrow-angle V or VR engines long before we made something as simple as a straight-5. The question is why.
  • The answer is that fuel injection technology did not mature before the 70s.
  • What does fuel injection have to do with it?
  • Well, fuel injection has everything to do with it because inline-5 engines don't really agree with carburetors.
  • Why?
  • We successfully carbureted everything from singles to V-12s.
  • Is it because it has an odd number of cylinders?
  • Well, no, because we successfully carbureted inline-3s decades before we made inline-5s.
  • To understand why inline-5s can't be carbureted, we have to visualize it.
  • So here we have our inline-5 engine.
  • Let's start by trying to make it work with a single carburetor.
  • Logic dictates that we should place the carburetor in the middle.
  • Now let's connect the carburetor to the engine via an intake manifold.
  • Okay, do you see the problem?
  • Yeah, it's the very different length of the intake manifold runners.
  • Because we have both a long engine and an odd number of cylinders, we are forced to have a great difference in runner length, which can lead to unequal performance of individual cylinders, resulting in a rough running engine.
  • Okay, let's try to fix this using two carburetors, each with its own manifold.
  • Obviously, this is a waste of time because we end up in a scenario where one carburetor feeds two and the other three cylinders.
  • Again, we have unequal fueling between cylinders and a rough running engine.
  • We could try distributing the two carbs on a single manifold so that each carb somehow hopefully feeds two and a half cylinders.
  • Well, this is no different from a single carburetor, single manifold setup, and in this scenario, the middle carburetor gets the most fuel because it has the shortest runner and both carburetors feed it nearly directly.
  • As long as we have a single intake manifold for all the cylinders, the number of carburetors doesn't matter because we can't tell a particular amount of fuel from a particular carburetor to go into a particular cylinder.
  • Okay, how about this?
  • We use one large and one small carburetor, each with its own intake manifold.
  • The larger one feeds three and the smaller one, two cylinders.
  • Now, if you know a bit about carburetors, you probably know that getting this to run right would be extremely difficult.
  • And even if you could get it to run right for the particular environment and altitude of the manufacturing facility, tuning this setup in a different climate, different altitude, or as the engine ages,
  • Would be nearly impossible because all the adjustments on one carburetor would not be proportional to the adjustments on the other.
  • And you would end up with a tuning nightmare and a scenario where two cylinders perform differently from the other three, again, leading to a rough running engine.
  • So the only way out is to use five individual carburetors like motorcycle engines do in Inline 4 and Inline 6 setups.
  • But the problem with this setup is that, first of all, in a car, it would take up quite a bit of space when you add the airbox and everything.
  • Plus, this setup usually results in an engine that develops peak torque at very high RPM, meaning that it's suitable for performance or racing engines, but not really something that you would daily drive.
  • Also, the fuel consumption would probably be horrible in a car, and the associated costs of this setup, as well as the tuning complexity, again, are not acceptable for something that is a mass-produced car meant for the average consumer.
  • However, there is a counter-argument to everything I just said.
  • Most importantly, the single-carb, single-intake manifold setup, and it's that over the years, we had many single-carb, single-intake manifold Inline 6 engines.
  • Some had very successful, very long production runs.
  • And if you take a look at their intake manifold, you can observe a massive difference in runner length.
  • In fact, if you put them side by side, the only distinction is that in the Inline 6, we have two runners in the middle, but in the Inline 5, we have one.
  • The theoretical difference in runner length really is the same.
  • So why then does a single-carb, single-intake manifold setup work for the Inline 6, but not the Inline 5?
  • The answer lies in the firing order of the engine.
  • A typical Inline 6 has a firing order of 1, 5, 3, 6, 2, 4, whereas a typical Inline 5 has a firing order of 1, 2, 4, 5, 3.
  • As you can see in the Inline 6, adjacent cylinders never fire one after the other, but in the Inline 5, they do.
  • 1, 2, followed by 4, 5. Now in the Inline 5, a cylinder fires every 144 degrees of engine rotation.
  • And as we know, an engine stroke, or piston top to bottom, is 180 degrees of engine rotation.
  • This means that cylinder 2 will begin its intake stroke before the intake stroke of cylinder 1 is over.
  • The same thing happens with cylinders 4 and 5. And because the runners are adjacent to each other, and because cylinder 2 has a shorter runner, cylinder 2 may suck in some of the fuel meant for cylinder 1 before it manages to get to cylinder 1,
  • Resulting in unequal performance of individual cylinders.
  • Now here's an interesting and little-known fact.
  • The first mass-produced Inline 5 gasoline engine was made by Audi in 1976, and indeed, it was fuel-injected.
  • Multiport fuel injection.
  • Every cylinder gets its own injector, which instantly resolves all the potential problems with carburation.
  • But what many don't know is that Audi offered their Inline 5 engine in carburetor form.
  • These were pretty rare, and as far as I know, they never made it to the States or Canada or many other markets.
  • They existed in only a few select markets for lower trim vehicles.
  • And indeed, these were not as powerful as their fuel-injected counterparts, nor were they as smooth and as clean.
  • And after just two or three years in the market, Audi got rid of these engines, and all subsequent Inline 5 engines, including those made by Volvo, Honda, GM, and Fiat, these were all exclusively fuel-injected.
  • So once fuel-injection technology matured, Inline 5 engines became sensible.
  • But still, they never became mainstream.
  • Those manufacturers that I just mentioned, Audi slash Volkswagen, Volvo, Honda, Fiat, GM, that's it.
  • Nobody else even ever bothered to make an Inline 5 gasoline engine, which is a bit weird because it does offer some very interesting benefits.
  • And to understand them, we have to observe the firing interval.
  • The Inline 4 engine fires every 180 degrees of engine rotation.
  • The Inline 5 every 144, and the 6 every 120 degrees of engine rotation.
  • As we said, one stroke is 180 degrees of engine rotation, which means that the Inline 4 has zero power stroke overlap.
  • In other words, it has no power stroke overlap at all.
  • Whereas the Inline 5 and the Inline 6 have 36 and 60 degrees of power stroke overlap, respectively.
  • Now, the more power stroke overlap you have, the smoother the engine.
  • This is why V12 engines are so incredibly smooth.
  • But here's the catch.
  • The Inline 5 has 25% more power stroke overlap than the Inline 4. It's 25% smoother than the Inline 4. But the Inline 6 is only 20% smoother than the Inline 5. So the jump in smoothness is greater in the favor of the Inline 5. Plus,
  • The Inline 5 is shorter than the Inline 6, which makes it a lot easier to install transversely into a car, which is the primary reason why Audi developed this engine.
  • The only real downside of the Inline 5 is that it has balance issues.
  • Not major balance issues, they can be resolved, but they are issues.
  • The Inline 4 has perfect primary balance.
  • The Inline 5 does not.
  • However, the Inline 5 has a much better secondary balance than the Inline 4. However, primary imbalance is more noticeable.
  • And so it has to be resolved with a balancing shaft in the Inline 5. And this does increase friction and cost.
  • Now, the Inline 6 is the real champion here because it has perfect balance out of the box, both primary and secondary.
  • However, the Inline 5 has a very special charm of its own.
  • And it can be observed only by listening.
  • Now, engine sound preference is, of course, a very subjective thing, but there's no denying that the Inline 5 sounds special.
  • So overall, it's a good engine.
  • From an engineering perspective, it offers very important benefits.
  • From a consumer perspective, it's interesting because it's different and it sounds special and different.
  • So why isn't it more common?
  • Well, the problem is that its talents occupy a very small, very niche space that exists between the Inline 4 and the Inline 6. These two engines, the 4 and the 6, they can meet pretty much every demand of every manufacturer.
  • The Inline 4 is compact and cost-effective.
  • And if you want upmarket smoothness, balance, and performance, you can go to the Inline 6. If you want to mount six cylinders transversely, you can use a V6. There is simply very little space for the Inline 5,
  • Especially nowadays when turbocharging, advanced sound insulation, and engine mounting technologies make the difference in smoothness and power between an Inline 4 and an Inline 5 barely noticeable to the average consumer.
  • This difficulty to justify an Inline 5 is best illustrated when we observe diesel engines.
  • Now, as you might know, diesel engines were never carbureted.
  • They relied on fuel injection pretty much from day one, which means that it was definitely possible to make diesel Inline 5 engines long before the 1970s.
  • However, the first diesel Inline 5 engine in a passenger vehicle was introduced only in 1974 by Mercedes.
  • And that's simply because all the bases were covered by either the Inline 4 or the Inline 6, making the Inline 5 a sort of very special, very charming middle child.