Combustion is one of the strokes for generating power inside a cylinder. It follows the compression stroke.

For example, in a gasoline engine, when the piston nears top dead center on the combustion stroke, a stroke that causes ignition in a compressed air-fuel mixture starts and generates expansive power.

The piston is pushed down by pressure, the crankshaft rotates, and power is generated.

This is followed by the exhaust stroke.

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