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Air Temperature Sensor

A unit consisting of an aspirator, bimetallic sensing element, and a vacuum modulator used to sense in-car temperature.

Air-conditioner Muffler

A tank-like device usually located in the compressor discharge line to reduce compressor pumping sounds.

Air-control Module (acm)

A component of the fuel control system that monitors intake air volume and meters fuel accordingly.

Air-cooled Engine

An engine that is cooled by the passage of air, generally forced, around and over the cylinders.

Air-injection Reactor (air)

An air-injection system comprised of a vane pump, diverter valve, and check valve; a type of emission control system that pumps fresh air into the exhaust.

Air-injector System

Engine emission-control system that injects fresh air at each exhaust port. The injected air mixes with the hot exhaust gases prolonging combustion, which reduces hydrocarbon and carbon monoxide exhaust emissions.

Air-over-hydraulic Brakes

Brakes utilizing a hydraulic system assisted by an air pressure system.

Air/csv

Air injection reaction/control switching valve.

Air/fuel Mixture

The proportion of air to fuel provided by a carburetor of fuel-injection system.

Air/fuel Ratio

The ratio of air to gasoline by weight in the fuel mixture drawn into the engine.

Air/fuel Ratio (a/f, Arf)

The relative proportions of air and fuel entering an engine's cylinders as produced by the carburetor or fuel-injection system; the measure of the amount of air and fuel needed for proper combustion. The ideal or Stoichiometric ratio for gasoline is 14.7

Air/mv

Air injection reaction/management valve.

Air/ssv

Air injection reaction/switch solenoid valve.

Air/vdv

Air injection reaction/vacuum delay valve.

Airb

Air injection reaction bypass.

Airborne

A term used to describe contaminants floating in air through the engine. The contaminants are light enough to be suspended in the air stream.

Aird

Air injection reaction diverter.

Airflow Meter

Used to measure the volume of air entering the engine on many fuel injection systems.

Airflow Sensor (as)

An instrument for measuring airflow in an electronic fuel-injection system to be processed by the electronic control module with other sensory data to calibrate the air/fuel mixture.

Airless Blasting

A method of surface cleaning parts using propelled shot.