The Four-Stroke Cycle

Exhaust Stroke

Definition of exhaust stroke. : the movement of an engine piston (as of a 4-stroke-cycle engine) that forces the used gas or vapor out through theexhaust ports. Exhaust Stroke | Definition of

Intake Stroke

intake stroke. : the intake stoke begens to open,the stroke in the cycle of an internal-combustion engine during which the fuel mixture is drawn in before compression. Intake Stroke | Definition of Intake

Compression stoke

the person starts moving upward in the cylinder while both of the engine valves are closed compression stroke. : the stroke in the cycle of an internal-combustion engine in which the gases are compressed before firing. Compression Stroke | Definition of

Power Stroke

the stage of the cycle of an internal combustion engine in which the piston is driven outward by the expansion of gases.