Four-stroke engine


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Note: "A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either direction. The four separate strokes are termed:

These four strokes can also be referred to as "suck, squeeze, bang, blow" respectively, which can be easier to remember.

Four-stroke engines are the most common internal combustion engine design for motorized vehicles,[clarification needed] being used in automobiles, trucks, light aircraft and motorcycles. The major alternative design is the two-stroke cycle." - (en.wikipedia.org 19.12.2021)

[Last update: 2021/12/19]