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. (September 2019)
In the context of an internal combustion engine, the term stroke has the following related meanings
- A phase of the engine's cycle (e.g. compression stroke, exhaust stroke), during which the piston travels from top to bottom or vice versa.
- The type of power cycle used by a piston engine (e.g. two-stroke engine, four-stroke engine).
- "Stroke length", the distance travelled by the piston during each cycle. The stroke length––along with bore diameter––determines the engine's displacement.