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Engine Lab

Inside a four-stroke engine

Fuel

Engine speed Accelerator pedal

Compression ratio

How many times the gas is squeezed.

Labels See-through engine

Click any part to find out what it does.

Try this

0.0Crankshaft turns

0.0Camshaft turns

0Power strokes

With fuel No fuel

Torque Power

Each cycle

Peak pressure
Air temperature after compression
Work on the piston
Pumping loss
Friction
Efficiency
Torque (4 cylinders)
Power (4 cylinders)

Where the fuel’s energy goes

Pushes the piston
Friction
Heats the engine (coolant)
Hot exhaust