Automotive Glossary


Automotive Glossary

Browse the glossary using this index

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A

ACEA

Association des Constructeurs Europeens d'Automobiles. The European organisation that sets specifications for lubricants. There are three categories for engine oils. A for gasoline/petrol engines. B for light vehicle diesel engines. C for commercial vehicle diesel engines.
Entry link: ACEA

Acetone

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

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.
Entry link: 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.
Entry link: Acid Rain

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.
Entry link: Acidic Compounds

Ackerman Principle

System of steering that produces wheel turning axes around a common point.
Entry link: Ackerman Principle

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 One-pack Acrylics were once widely used as automotive topcoats, but have generally been replaced by water-borne base colours overcoated with two-pack Acrylic clear coats
Entry link: Acrylic

Acrylic Urethane

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

ACS

Air conditioning switch.
Entry link: ACS

ACT - Air Charge Temperature

Air charge temperature sensor measures the intake air temperature on fuel injection systems.
Entry link: ACT - Air Charge Temperature


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