Untitled Flashcards

Front

What are the four strokes of a four-stroke engine cycle?

Back

Intake, Compression, Power, Exhaust

Front

The intake valve opens and the piston moves down to draw in a mixture of air and fuel

Back

What happens during the intake stroke?

Front

Describe the compression stroke

Back

The intake valve closes and the piston moves up to compress the air-fuel mixture.

Front

The spark plug ignites the compressed air-fuel mixture

Back

What initiates the power stroke?

Front

What occurs during the power stroke?

Back

The ignited air-fuel mixture expands, pushing the piston down and generating power

Front

The exhaust valve opens, and the piston moves up to expel burnt gases from the cylinder

Back

Explain the exhaust stroke.

Front

What is the function of the crankshaft?

Back

It converts the linear motion of the pistons into rotational motion to drive the vehicle

Front

It controls the timing of the opening and closing of the intake and exhaust valves.

Back

What role does the camshaft play in a four-stroke engine?

Front

Why is the timing of valve operations crucial?

Back

To ensure optimal air-fuel mixture intake and exhaust gas expulsion for efficient engine performance.

Front

To ignite the compressed air-fuel mixture in the cylinder

Back

What is the purpose of a spark plug in a petrol engine?