Fundamentals of a Four-Stroke Gas Engine

Front

What is the main function of the piston in a four-stroke gas engine?

Back

To travel up and down in the cylinder

Front

In a four-stroke engine, the _______ stroke involves the piston traveling upward to compress the air and fuel mixture.

Back

Compression

Front

Which component turns the piston's up and down motion into a rotating motion?

Back

Crankshaft

Front

The four-stroke cycle consists of intake, compression, combustion, and _______.

Back

Exhaust

Front

How many strokes are needed to complete one cycle in a four-stroke engine?

Back

Four

Front

During which stroke does the spark plug ignite the fuel mixture?

Back

Combustion

Front

The intake stroke involves the piston moving _______ as the intake valve opens.

Back

Downward

Front

What is the role of the exhaust valve in a four-stroke engine?

Back

To release burned air-fuel mixture

Front

In a four-stroke engine, the combustion stroke is followed by the _______ stroke.

Back

Exhaust

Front

What is the sequence of strokes in a four-stroke engine?

Back

Intake, Compression, Combustion, Exhaust