Automotive Glossary


Automotive Glossary

Browse the glossary using this index

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C

CPS

Crankshaft position and speed sensor.

CPU

Central processing unit. This relates to the main component in an ECU or computer.

Cracking

Splitting of a paint film. Cracking usually appears as straight lines which penetrate the entire film thickness and can be caused by over-baking or by application of excessive film builds.

Crank

A term used to describe turning the engine by the starter motor.

Crankcase

The part of the engine that houses the crankshaft and the bearings in which it runs. It can be either a separate part or be integral with the engine block.

Crankcase Ventilation

Usually a positive crankcase ventilation (PCV) system that allows any crankcase pressure and oil vapour to be passed into the combustion chamber so that it does not escape into the atmosphere as a pollutant. Early crankcase ventilation consisted of an open vent or breather tube that allowed crankcase gases to be passed out below the vehicle.

Cranked

Description of making the engine rotate on the starter motor.

Cranking

The process of turning over an engine using a starter motor (or a handle on earlier models!).

Crankshaft

Major rotary component of engine that converts piston movement into rotary movement.

Crankshaft Damper

Usually part of the front pulley. A rubber mounted mass reduced torsional vibration.


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