Cd

Abbreviation for Drag Coefficient, a measurement of air resistance (drag). The lower the number, the less drag that a vehicle or shape has.

CD

1. An API classification for
2. Diesel engine oil for certain naturally aspirated, turbocharged or supercharged diesel engines where highly effective control of wear and deposits is vital, or when using fuels with a wide quality range (including high-sulfur fuels). Oils designed for this service were introduced in 1955 and provide protection from high temperature deposits and bearing corrosion in these diesel engines.
3. Acronym for Capacitive discharge.
4. (Cd) A measurement of Drag coefficient.

CD changer

A device which is connected to a stereo system and allows several music CDs to be played.

CDCV

Acronym for Canister Drain Cut Valve

CDI

Acronym for Capacitor discharge ignition

Also see

• CDI box

CDI box

Acronym for capacitive discharge Ignition device sometimes controlled by a Computer. It is designed to help the Spark plug fire at a rate consistent with the rpms of the engine.

CD-II

An API classification for a severe-duty two-stroke cycle Diesel engine oil where highly effective control of wear and deposits is required. Oils designed for this service also meet all performance requirements of API Service Category CD. It was replaced by CF-2 category.

CDL

CDL Acronym for Commercial Driver's License -- A US license which authorizes an individual to operate commercial motor vehicles and buses over 26,000 pounds gross vehicle weight. For operators of freight-hauling trucks, the maximum size which may be driven without a CDL is Class 6 (maximum 26,000 pounds gross vehicle weight). In Canada it is called a Class 1 license.

C-Dolly

C-Dolly

A converter dolly with two drawbars and attaches at two connection points to the trailer ahead of it. These dollies can have one or more axles and are considered more stable than the common A-dolly

CD player

A device which plays music compact discs. Usually combined with a stereo radio receiver and sometimes with a CD changer.

CDR

1. Acronym for
2. Crankcase depression regulator
3. Acronym for Chrysler Diagnostic Readout

CDRV

Acronym for Crankcase Depression Regulator Valve

CDV

Acronym for Car-Derived Van (e.g., Renault Kangoo).

Cd value

A number representing the Coefficient of drag which is the amount of resistance that a moving vehicle makes in a wind tunnel

CDW

Acronym for Collision Damage Waiver offered on car rental.

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