Instroke (Noun)
Meaning
The stroke of an engine piston moving away from the crankshaft.
Classification
Nouns denoting natural events.
Examples
- The instroke of a diesel engine piston draws air into the combustion chamber to be mixed with fuel.
- In a four-stroke engine, the instroke is also known as the intake stroke where air and sometimes fuel is drawn in.
- During the instroke, the piston in the engine lowers, creating a partial vacuum that draws the air or air-fuel mixture in.
- As the piston makes its instroke in an internal combustion engine it creates suction that helps air enter the cylinder.
- The instroke and outstroke of an engine's crankshaft are critical components of the engine's efficiency.