Automotive Glossary


Automotive words, phrases and abbreviations.

Browse the glossary using this index

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A

Acetone

A very fast evaporating solvent with high solvency for certain types of compounds and resins. Has a characteristic ether-like odour.

Acid

An inorganic or organic compound that (1) reacts with metals to yield hydrogen; (2) reacts with a base to form a salt. They are corrosive to human tissue and should be handled with care. Examples are hydrochloric acid, sulphuric acid, and nitric acid.

Acid Rain

Forms when pollution is combined with water in the atmosphere. When sulphur dioxide and nitrogen oxides mix with water molecules, they form weak sulphuric and nitric acids. As the water evaporates, the acids gain strength and can etch the finish of any vehicle upon which they have been deposited.

Acidic Compounds

Harmful chemicals that are formed during combustion and can contaminate engine oil. Sulphur in fuel can form sulphuric acid which can cause corrosion, sludging and lubricating oil defects.

Ackerman Principle

System of steering that produces wheel turning axes around a common point.

Acrylic

A coating based on a polymer containing short chain esters of acrylic and methacrylic acid. One-pack Acrylics were once widely used as automotive topcoats, but have generally been replaced by water-borne base colours overcoated with two-pack Acrylic clear coats

Acrylic Urethane

A coating based on urethane chemistry which also includes acrylic chemistry as part of the cross-linked polymer backbone.

ACS

Air conditioning switch.

ACT - Air Charge Temperature

Air charge temperature sensor measures the intake air temperature on fuel injection systems.

Activator

A necessary component used to provide a chemical reaction to cure paints, resins and adhesives.


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