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Crown Wheel

A term often used for crown gear.

Crownwheel

English term for Flywheel Ring Gear

CRS

An acronym for cold-rolled steel.

CRT

An acronym for cathode-ray tube.

Crude Oil

Petroleum in its natural state; as pumped from the ground before refinement.

Cruise Control

A control system that allows the vehicle to maintain a preset speed, though the driver's foot is off the accelerator.

Cruise Control

A popular option that allows a driver to bring a vehicle up to speed, then push a button and maintain that speed without touching the gas pedal. Cruise control is available on many vehicles from the factory, but it also can be added to a vehicle at a later date.

Cruising

1. A motorized version of a Saturday evening promenade around the town square. 2. A social outing, generally by young people, driving a route repeatedly on the major city streets at a slow speed, often for hours at a time. 3. A chance for young men, or ladies, to show off their wheels and flirt with the young ladies, or men.

Crumple Zones

See crush zones.

Crunch Hat

A safety helmet.

Crush

The amount of compression required to seat a rod or main bearing into its housing bore.

Crush Relief

The area at the edge of a rod, or main bearing, that allows the crush to occur.

Crush Sensor

Normally open input of the air bag system that has gold plated contacts that close when subjected to a predetermined deceleration force.

Crush Sleeve

A sleeve that is used to position a pinion gear in the differential; designed to crush when torqued to specifications.

Crush Zones

Areas in the front and rear of a vehicle body that are designed to crumple progressively to absorb the energy of a crash, so the crash energy is not transferred to the people inside the vehicle.

CRV

Coating richer valve

CS

Control solenoid; Also Cs, Cesium An element with the atomic number of 55

CSFI

An acronym for Central Sequential Fuel Injection

CSFIS

Cold start fuel injector switch

CSM

1. Acronym for Central Security Module (Ford)