Four-stroke speed: At 3,000 RPM, each cylinder performs

The secret heartbeat of your car

Chapter 1

The four-stroke dance

Chapter 2

The heavy metal band

Chapter 3

Feeding the beast

Chapter 4

Keeping it cool and smooth

YOUR GOAL

Master of The secret heartbeat of your car

Ch 1 · The four-stroke dance
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audi Four-Stroke Cycle

Four quick strokes to make the piston slide (but only one spark gives the wheels their ride!)

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At 3,000 RPM, each cylinder runs through all four strokes 25 times every second.

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The big bang moment

audi Expanding gas at 2,000 degrees Celsius violently drives the metal piston downward.

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Squeezing the power

audi The engine tightly packs the air-fuel mixture to make the upcoming explosion incredibly powerful.

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Fun Fact

Four-stroke speed: At 3,000 RPM, each cylinder performs this entire cycle 25 times every single second.

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Gossip

Would you drive a car that makes absolutely no sound?

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Quiz

Why does a car engine compress the air-fuel mixture before igniting it?

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Quiz

What gas is pushed out of the cylinder during the exhaust stroke?

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Quiz

What happens during the intake stroke of a car engine?

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Quiz

What happens to the valves during the compression stroke of an engine?

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Quiz

Who patented the modern four-stroke engine cycle in 1876?

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Quiz

Which of the four engine strokes is the only one that actually produces power?

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Quiz

How many times does a cylinder complete the four-stroke cycle per second at 3,000 RPM?

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Quiz

What approximate voltage does a typical car spark plug use to ignite fuel?

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