Glossary “air control module (ACM)” Definition:
Component of the fuel control system that monitors intake air volume and meters fuel accordingly.
a
air control valve (ACV)
Glossary “air control valve (ACV)” Definition:
Component used to route air from the AIR pump to either the exhaust manifold or to the catalytic converter.
air conversion unit
Glossary “air conversion unit” Definition:
Acts as in-line regulators to convert high pressure main line air pressure to low pressure, high volume air. They use existing shop air.
air cooled
Glossary “air cooled” Definition:
Removing heat from the engine by circulating air across the cylinder block, heads, exhaust manifold(s), and oil sump.
air cooled engine
Glossary “air cooled engine” Definition:
Engine that is cooled by the passage of air, generally forced, around and over the cylinders.
air cooling
Glossary “air cooling” Definition:
Engine cooling that relies on forced airflow over extended metal fins on the cylinder head and the block to maintain proper operating temperature.
air conditioning gauges
Glossary “air conditioning gauges” Definition:
Used to measure operating pressures in a vehicle’s air conditioning system.
air conditioning relay
Glossary “air conditioning relay” Definition:
Relay used to improve idle smoothness and acceleration during cold engine starts and WOT conditions. Designed to cut power to the A/C clutch and cooling fan to remove these loads from the engine during these conditions.
air-conditioner muffler
Glossary “air-conditioner muffler” Definition:
Tank-like device usually located in the compressor discharge line to reduce compressor pumping sounds.
Air Conditioning and Refrigeration Refrigerant Recovery, Reclaim, and Recycle System (ACR3)
Glossary “Air Conditioning and Refrigeration Refrigerant Recovery, Reclaim, and Recycle System (ACR3)” Definition:
Equipment that is used to recover, reclaim, and recycle refrigerant from an air conditioning or refrigeration system.
air brake
Glossary “air brake” Definition:
1). Moveable dynamic spoiler that can be raised against the wind to slow a high speed vehicle. 2). Braking system on some heavy trucks that uses compressed air to expand the brake shoes by cam or wedge against the brake drums.
air carbon arc cutting
Glossary “air carbon arc cutting” Definition:
Carbon arc-cutting process that removes molten metal with a jet of air.
air charge temperature (ACT)
Glossary “air charge temperature (ACT)” Definition:
Temperature of incoming air in fuel-injection system.
air cleaner
Glossary “air cleaner” Definition:
Device connected to the air intake that all incoming air must pass through it. Its purpose is to filter dirt and dust from the air before it passes into the engine.
air compressor
Glossary “air compressor” Definition:
1). Engine-driven mechanism for supplying high pressure air to trucks air brake systems. Two types of compressors: those designed to work on in-line engines and those that work on V-type engines. The in-line type is mounted toward the fire wall and is camshaft driven. 2).Engine or electric motor driven mechanism for supplying shop air for the lift, air tools, and paint spraying equipment.
air conditioner
Glossary “air conditioner” Definition:
Device used for the control of the temperature, humidity, cleanness, and movement of air in a given space.
air conditioning (A/C)
Glossary “air conditioning (A/C)” Definition:
Process of adjusting and regulating, by refrigerating, the quality, quantity, temperature, humidity, and circulation of air in a space or enclosure; to condition the air.
air bag system
Glossary “air bag system” Definition:
The air bag system is designed as a supplemental restraint. In the case of an accident it will deploy a bag from the steering wheel or passenger side dash panel to provide additional protection against head and face injuries.
air bleed
Glossary “air bleed” Definition:
Holes or tubes in the carburetor to allow air to premix with gas flow.
air box
Glossary “air box” Definition:
An enclosed chamber which directs air into a carburetor or intake manifold and houses a filter