Glossary of Auto Terms

DriverSide's Car Dictionary has the most comprehensive definitions of automotive terms. This auto glossary can help you decipher what your mechanic is fixing and what the purpose or function of the particular auto part or accessory is for. We have taken the mystery out of automotive service jargon, so that you don't have to.


Power Stroke

Occurs when the piston is pushed down by the expansion of the burning air/fuel mixture in the cylinder. It's called the "power" stroke because as the piston moves down on this stroke, it does so with great force, using the piston rod to push again on the crankshaft, which in turn rotates the axle(s), which move the car. Neat how that works, yes?

See Also:
Pressure Plate
Passing Gear
Cylinder Head
Throw-out Bearing
Timing Belt

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