What is the correct order of the strokes in a 4-stroke cycle engine?

In a 4-stroke cycle engine, the correct order of the strokes is intake, compression, power, and exhaust. During the intake stroke, the engine draws in a mixture of air and fuel through the intake valve as the piston moves down. This is followed by the compression stroke, where the piston moves back up, compressing the air-fuel mixture to prepare it for ignition.

Next is the power stroke, which occurs after the compressed mixture is ignited, causing an explosion that drives the piston downward, generating power. Finally, the exhaust stroke takes place where the piston moves back up again to expel the burnt gases from the combustion chamber through the exhaust valve. This sequence is critical for the engine's operation, ensuring that it continuously cycles and produces power efficiently.

The other orders presented do not accurately reflect the sequence of operations in a 4-stroke engine, which may lead to confusion regarding how each stroke contributes to the overall functioning of the engine. Understanding this correct sequence is essential for anyone involved in working with or studying small engines.