<P> In the context of an Internal combustion engine, the term stroke has the following related meanings: </P> <Ul> <Li> A phase of the engine's cycle (eg compression stroke, exhaust stroke), during which the piston travels from top to bottom or vice-versa . </Li> <Li> The type of power cycle used by a piston engine (eg two - stroke engine, four - stroke engine). </Li> <Li> "Stroke length", the distance travelled by the piston in each cycle . The stroke length - along with bore diameter - determines the engine's displacement . </Li> </Ul> <Li> A phase of the engine's cycle (eg compression stroke, exhaust stroke), during which the piston travels from top to bottom or vice-versa . </Li>

What component of the engine determines the stroke