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[[Image:4-Stroke-Engine.gif|thumb|right|[[Poppet valve]]s in action at the top of the cylinder]] | |||
The '''Four stroke''' internal combustion engine is used in cars, trucks, [[motorcycle]]s, construction machinery and many others applications. | The '''Four stroke''' internal combustion engine is used in cars, trucks, [[motorcycle]]s, construction machinery and many others applications. | ||
==Four stroke cycle== | ==Four stroke cycle== |