What does the number of strokes mean for a motorcycle?

[DelElizabeth]

Motorcycle strokes refer to the type of work cycle of the engine. The distance the piston travels from one extreme position to another is called a stroke, also known as a cycle. The following is an introduction to two-stroke and four-stroke engines: Two-stroke engine: In a two-stroke motorcycle, the engine oil must participate in combustion to lubricate components such as the cylinder, piston, and piston rings. If four-stroke engine oil is used, it can easily form excessive carbon deposits on the cylinder head, piston, exhaust port, and exhaust pipe, which can negatively affect engine operation and lubrication, and may also increase wear. Four-stroke engine: The working principle of a four-stroke diesel engine is the same as that of a four-stroke gasoline engine, consisting of four cycles: intake, compression, power, and exhaust. The difference is that a diesel engine intakes pure air during the intake stroke. Near the top dead center of the compression stroke, the fuel injector sprays diesel into the combustion chamber. Since the temperature inside the cylinder at this point far exceeds the auto-ignition temperature of diesel, the injected diesel ignites spontaneously after a brief delay, generating power.