You searched for: “piston
piston
A tight-fitting plunger that moves up and down inside an engine cylinder, pushed by the force of exploding fuel.

The pistons power the crankshaft and energy from the pistons drives the gearbox and ultimately the wheels. It is also used in shock absorbers to convert the energy of bouncing suspension springs into heat.

This entry is located in the following unit: Automobile or Related Car Terms (page 4)