Glossary “air management system” Definition:
System of solenoids and valves that control the output of the AIR pump to the catalytic converter, air cleaner housing, atmosphere or exhaust manifold. Temperature and engine load are used to determine output location.
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air mix damper
Glossary “air mix damper” Definition:
A blend air door, it controls heating and A/C action.
air-over-hydraulic brakes
Glossary “air-over-hydraulic brakes” Definition:
Brakes utilizing a hydraulic system assisted by an air pressure system.
air intake system
Glossary “air intake system” Definition:
System that allows fresh clean air to enter a component such as an air conditioner, passenger compartment, or engine.
air jack
Glossary “air jack” Definition:
Device that uses compressed air to lift a vehicle. On some Indy and F-1 cars, the jacks are built into the chassis, permitting the whole car to be raised instantly which allowsall four tires to be changed simultaneously.
air line
Glossary “air line” Definition:
A hose, pipe, or tube through which compressed air passes.
air line filter-drier
Glossary “air line filter-drier” Definition:
Used in the air line to remove moisture and debris from the air flowing through the air lines. It is designed to trap and hold water and oil that passes out of the air compressor.
air hose
Glossary “air hose” Definition:
Flexible air lines between the tractor and trailer, which supplies air to the trailer brakes.
Air Injection Reaction (AIR)
Glossary “Air Injection Reaction (AIR)” Definition:
Method of reducing harmful exhaust emissions by injecting air into either the exhaust manifold or the catalytic converter
air injection system
Glossary “air injection system” Definition:
Smog pump or aspirator valve that adds addition air to the exhaust, to help reduce HC and CO emissions. Also supplies air to the catalytic converter, needed for oxidation.
air inlet valve
Glossary “air inlet valve” Definition:
Moveable door in the plenum assembly that permits the selection of outside air or inside air for both heating and cooling systems.
Air/Fuel Ratio
Glossary “Air/Fuel Ratio” Definition:
The ratio of air to fuel by weight of the mixture drawn into the engine
air/fuel ratio (A/F, ARF)
Glossary “air/fuel ratio (A/F, ARF)” Definition:
The relative proportions of air and fuel, by weight, 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 14.7:1 air to fuel by weight. A higher ratio would contain more air and less fuel, and would be considered a lean mixture. A lower ratio with more fuel and less air would be a rich mixture. The air/fuel ratio is determined by the orifice size of the main jets inside a carburetor, the dwell duration of the mixture control solenoid inside a feedback carburetor, or the orifice opening and fuel pulse duration of a fuel injector.
Air / Fuel Sensor
Glossary “Air / Fuel Sensor” Definition:
The A/F sensor is similar to the O? sensor in appearance The O? sensor, however, has different operating characteristics and is also called the air/ fuel ratio sencer and a wide range or band ratio sensor.
air gap
Glossary “air gap” Definition:
Small space between parts that are mated magnetically or electrically.
air hammer
Glossary “air hammer” Definition:
Uses back and forth hammer blows to drive a cutter or driver into the work piece.
air hoist
Glossary “air hoist” Definition:
A hoisting device using compressed air in a cylinder, acting against a piston.
air horn
Glossary “air horn” Definition:
1). Horn that is powered by compressed air. 2). A tubular passage containing the choke valves in the atmospheric side of a carburetor venturi through which the incoming air must pass.
air/fuel mixture
Glossary “air/fuel mixture” Definition:
The proportion of air to fuel provided by a carburetor or fuel-injection system.
air foil
Glossary “air foil” Definition:
Inverted wing designed to increase downward aerodynamic force to increase vehicle traction.