- AIADA
- Abbreviation for American International Automobile Dealers Association.
- AIAM
- Abbreviation for Association of International Automobile Manufacturers.
- AIA-SAP
- Abbreviation for Automotive Industry Association (Czech Republic).
- Aiming
- Adjusting the direction of the headlight beams to shine without blinding oncoming traffic and yet providing the maximum illumination whether in low beam or high beam.
- Air
-
- Abbreviation for air conditioner.
- A bicycling or motorcycling term describing the space or gap between the tires and the ground when the bike takes a jump. Both tires must be off the ground before it can be called 'air' as in the expression, 'I really caught air on that last jump.'
- A gas containing approximately 80% nitrogen, 20% oxygen, and a small portion of other gases and water vapor. One of the essential factors in a combustion engine (fuel, air, proper proportion of mixture, compression, timing, and spark).
- A gas for combustion, heating, cooling, ventilation, breathing, and other uses.
See- Ambient air
- Atmospheric Air
- Charge air
- Cold air
- Dilution Air
- Discharge Air
- Driver air bag
- Electric air control valve
- Electric air switching valve
- External mix air cap
- False Air
- fuel air mixture
- Fuel-air ratio
- Furnace Central Warm Air
- Heater air pipe
- Idle air bleed screw
- Idle air jet
- Internal mix air cap
- L-jetronic air flow meter
- Lateral air passage
- Low-profile air cleaner
- Modular air strut
- Oil bath air cleaner
- Paper air cleaner
- Passenger-side air bag
- Primary Air
- Propane Air
- Proper proportion of air and fuel
- Pulse air principle
- Pulse air system
- Ram air
- Recirculated Air
- Return Air
- Secondary air
- Standard Air
- Stratification Of Air
- Supply Air
- Ventilation Air
- AIR
- An Abbreviation for Air Injection Reactor system of reducing objectionable exhaust emissions. A belt-driven pump sends air through a pipe to the exhaust manifold and/or catalytic converter to help control emissions. Replacement for the term EAC See
- Air aspirator system
- (AAS) A passive air injection system that uses a one-way valve instead of an air pump to introduce extra air into the exhaust stream.
- Air aspirator valve
- A device that uses a diaphragm to draw air into the exhaust system to reduce emission. If a large volume of air is needed, an air pump is used instead
- Air-assisted hydraulic brake system
- A hydraulic-type brake system actuated by an air hydraulic power unit.
- Air bag
-
- A device which is part of the passive safety system. In the event of a collision, sensors will cause the air bag to be deployed so that your head will be pillowed by the bag instead of hitting the instrument panel or windshield.
- A durable, inflatable bag used to force and secure freight to the inside walls of a trailer.
- Airbag
- A device which is part of the passive safety system. In the event of a collision, Sensors will cause the airbag to be deployed so that your head will be pillowed by the bag instead of hitting the dash or windshield.
- Airbag module
- All the components that make up the airbag system Airbag, inflator, cover, and sensor. Also called airbag unit.
- Airbag restraint system
- A system which uses an airbag to restrain occupants in the event of a collision. They may be placed on the instrument panel or doors or even in the shoulder strap. Also called passive restraint system.
- Airbag unit
- All the components that make up the airbag system Airbag, inflator, cover, and sensor. Also called airbag module.
- Air bellows
- A rubber bladder or sleeve filled with compressed gas or air. Found on some suspension systems to provide cushioning. See
- Air box
- A plastic, fiberglass, or metal container which may hold the air filter. Some are mounted between the carburetor and the air filter. This box provides a volume of still, filtered air for induction into the engine.
- Air brake
-
- A system of braking which is usually found on large truck in which compressed air pushes against a brake piston or diaphragm in order to apply the brakes to stop or slow the vehicle.
- An extendable device, most commonly a hinged flap on wing or fuselage, controlled by the pilot, to increase the drag of an aircraft. Originally a means of slowing bombers to enable them to dive more steeply, it is an essential flight control on clean jet aircraft and sailplanes
- A mechanical brake operated by air-pressure acting on a piston
- An absorption dynamometer in which the power is dissipated through the rotation of a fan or propeller.
- Air break
- An inverted opening placed in the chimney of a gas furnace to prevent back pressure from outside wind from reaching the furnace flame or pilot
- Airbrush
-
- A paint spray gun used for precise detailing work and custom painting.
- The act of using an airbrush.
- Air bypass valve
- (ABPV or ABV) a backfire-suppressor valve used in air injection systems. During high engine vacuum conditions such as deceleration, it vents pressurized air from the air pump to the atmosphere in order to prevent backfiring. At other times, it sends air to the exhaust manifold. On vehicles with a three-way catalyst, it sends air to the oxidation catalyst only when the engine warms up. Also called an anti-backfire valve, diverter valve, or gulp valve.
- Air Can Trailer
- Colloquial term for a pneumatic tank trailer for transporting solids in bulk cargo See
- Air capacitor
- A capacitor in which the dielectric is nearly all air, for tuning electrical circuits with minimum dielectric loss.
- Air cell
-
- A small auxiliary combustion chamber used in certain types of compression-ignition engines, for promoting turbulence and improving combustion.
- A space provided in the piston or cylinder to trap air during the compression stroke. It later flows out into the combustion chamber
- Air charge temperature
- (ACT) The temperature of the air being forced into the carburetor or fuel injection system. An ACT sensor measures this temperature.
- Air charge temperature sensor
- (ACTS) a thermistor sensor that inputs the temperature of the incoming air stream in the air filter or intake manifold to the computer. It can be located in the intake manifold (EFI systems) or the air cleaner. On carbureted vehicles, if the air is cold, it signals the choke to let off slowly. It then alters engine speed after the choke is off and below a certain temperature, dumps air from the air injection system to the atmosphere for catalyst protection.
- Air cleaner
-
Air filter
- A device which filters the air entering the engine to remove airborne impurities, dust, dirt, and bumblebees. Without it, impurities could cause internal wear and damage. Also called air cleaner.
- A device using filters or electrostatic precipitators to remove indoor-air pollutants such as tobacco smoke, dust, and pollen. Most portable units are 40 watts when operated on low speed and 100 watts on high speed.
- Air cleaner bi-metal sensor
- (ACL BI-MET) a component of a thermostatic air cleaner system. It senses the temperature of incoming fresh air and bleeds off vacuum when the air is warm. When the air is cold, the sensor directs vacuum to the air cleaner vacuum motor.
- Air cleaner duct and valve vacuum motor
- (ACL DV) a component of thermostatic air cleaner systems. It opens and closes the air duct valve to provide heated or unheated air to the engine in accordance with the temperature of the incoming air.
- Air cleaner element
- The replaceable filter which prevents impurities from the air which enters the combustion chamber. Also called air filter element.
Air filter element
- Air cleaner horn
- Many air cleaner canisters have a spout or horn extending from the edge of the canister into which the air is taken in. See
- Air collector
- A medium-temperature collector used predominantly in space heating, using pumped air as the heat-transfer medium.
- Air compressor
- A device which compresses air and stores the air into a tank so that the compressed air can be used in a shop to fill tires, run tools, spray paint, etc. In a vehicle, it can be used in brake systems, leveling systems, automatic tire inflation systems, and air supply systems.
- Air-conditioned
- The state of exchanging warm air for cold so that a vehicle or home is cooler than the outside temperature.
- Air conditioner
- (A/C) or (Air)
- A device used to control temperature, humidity, cleanliness, and movement and sometimes the air purity, in an enclosed space
- A system of devices which causes a reduction or control of the temperature and humidity within the cab of a vehicle. It was first offered on the 1941 Packard. Two types are used in vehicles: receiver-dryer type and accumulator type.
See
- Air conditioner clutch compressor signal
- (ACCC signal) the input to the computer regarding the status of the air conditioner clutch (engaged or disengaged).
- Air-conditioning
- A system or process for controlling the temperature, humidity, air movement, and sometimes the purity of the air in an enclosed space by use of a refrigeration unit powered by electricity or natural gas. Note Fans, blowers, and evaporative cooling systems (swamp coolers) that are not connected to a refrigeration unit are excluded..
- Air conditioning compressor
-
- Pump of a refrigerating mechanism which draws a low pressure on cooling side of refrigerant cycle and squeezes or compresses the gas into the high-pressure or condensing side of the cycle.
- An air conditioning component which pumps, circulates, and increases the pressure of refrigerant vapor
- Air conditioning sensor
- A detection device which provides information that the air conditioning compressor is operating for idle speed control.
- Air control valve
- (ACV) a vacuum-controlled diverter valve (or a combination bypass/diverter valve) in an air injection system that diverts air pump air to either the upstream (exhaust manifold) or downstream (oxidation catalyst) air injection points as necessary.
- Air-cooled apparatus
- An electric apparatus in the heat caused by the losses is removed solely by natural or fan-assisted air flow.
- Air-cooled condenser
- A heat exchanger which transfers the heat of compression from condensing coils to surrounding air. This may be done either by convection or by a fan or blower.
- Air cooled engine
- An engine which generally has large fins or ribs and is often exposed to the outside air. The heat of the engine is dissipated through the fins of the engine. In contrast, the heat in a liquid-cooled engine is reduced by channels throughout the inside of the engine through which liquid (antifreeze) passes. Most older Volkswagens and some motorcycles use air cooled engines.
Air cooled engine
- Air-cooled machine
- A machine in which the heat caused by the losses is removed solely by natural or fan-assisted air flow.
- Air cooler
-
- Mechanism designed to lower temperature of air passing through it
- The cold accumulator used in the Lindé process of air liquefaction for the preliminary cooling of the air.
- Aircraft
- Any mechanically driven heavier-than-air flying machine with wings of fixed or variable sweep angle. Subdivision landplane, seaplane (float seaplane and flying boat), amphibian.
- Aircraft quality
- Fasteners made with a particularly high level of attention in manufacture and inspection.
- Air dam
-
- An attachment called a spoiler which is usually located below the front bumper. Its design, shape, and placement helps to reduce the flow of air under the vehicle. It may help to increase the flow of air to the radiator and engine compartment, affect aerodynamic drag, or affect positive and negative lift.
- A barrier beneath the front bumper used to divert the flow of air beneath the car. Usually intended to reduce lift and drag.
- Air deflector
- A panel which is positioned at an angle on the roof of a truck or on the front of the hood to cause the air to flow over the vehicle. The hood air deflector (often made of transparent plastic) is designed to prevent bugs from hitting the windshield. British term is 'air shield.'
- Air drag
- Resistance to the motion of a body passing through the Earth's atmosphere, most serious in the lower regions, producing changes in the geometry of the orbit, even causing the body to re-enter. More generally the term atmospheric drag is used in reference to other planets.
- Air dry
- Allowing paint to dry at ambient (surrounding) temperatures, without the aid of an external heat source.
- Air-dry
- Allowing paint to dry at ambient (surrounding) temperatures, without the aid of an external heat source.
- Air drying adhesives
- Adhesives that can be dried at room temperature without the use of heat. This type of adhesive consists of solid particles dissolved or dispersed in a liquid. When the liquid evaporates, it leaves the dry adhesive film. Most elastomer based adhesives are of this type.
- Air duct
- A tube or channel which permits heated and ventilated air to enter the passenger compartment, building, or machinery to provide heating, cooling, or ventilation.
- Aired up
- Said of an oil plunger pump which no longer sucks because gas or air has filled the suction chamber.
- Air ejector
- A type of air pump used for maintaining a partial vacuum in a vessel through the agency of a high-velocity steam jet which entrains the air and exhausts it against atmospheric pressure.
- Air engine
-
- An engine in which air is used as the working substance. Rapid heating from an external source expands the air in the cylinder with consequent motion being imparted to a piston. After transfer to a compression cylinder, for rapid cooling, the air is returned to the working cylinder for the next cycle. Also called hot-air engine.
- A small reciprocating engine driven by compressed air.
See
- Air filter element
- The replaceable filter which prevents impurities from the air which enters the combustion chamber. Also called air cleaner element.
Air Filter Element
- Air filtration system
- A system that cleans smog, pollen, exhaust smoke, and odors out of the air. Cleans both interior circulated air and that coming from the outside.
- Airflow
- The passage of air which moves around an object (esp. a vehicle) or through an air duct (e.g., ventilation system or exhaust system).
- Air flow controlled fuel injection
- (AFC) a Bosch term for its early pulse fuel injection systems; usually refers particularly to the system which uses an L-Jetronic air mass sensor.
- Air flow meter
-
- A sensor which measures the rate at which air enters the engine. In Bosch systems, any device that measures the amount of air being used by the engine. The control unit uses this information to determine the load on the engine. The two most common examples of airflow meters are the air-flow sensor used in the Bosch L-Jetronic and the air mass sensor used in the Bosch LH-Jetronic systems.
- An instrument, mainly experimental, for measuring the airflow in ducts
- Airflow meter
- See
- Air flow sensor
-
- A device in an electronically controlled fuel injection system which detects the amount of air entering the combustion chambers. Continuous injection systems use an airflow sensor plate to measure airflow volume; electronic systems use a vane or flap-type airflow sensor.
- A detection device that provides information on the volume flow or mass flow rate of the intake air to the engine.
- Air foil
- An aerodynamic device used to improve traction by increasing the downward force on either end of the car. It can be compared to an airplane wing with this primary difference A wing is designed to provide lift so it can fly; the air foil pushes the vehicle closer to the ground. Although they may be called 'wings,' they are properly air foils. They increase the cornering ability, improve Stability, but add aerodynamic drag.
Air foil
- Air Freight Container
- A smaller and lighter cargo container often made out of fiberglass designed to hold cargos that are shipped in airplanes.
- Air/fuel
- See
- Air-fuel ratio
- (A/F ratio) The mass of air supplied to the engine divided by the mass of fuel supplied in the same period of time (i.e., ratio of air weight to fuel weight). The Stoichiometric, or chemically correct, air-fuel ratio is the exact ratio necessary to burn all the carbon and Hydrogen in the fuel to carbon dioxide and water with no Oxygen remaining. The Fuel-air ratio is the reciprocal of the air-fuel ratio. The amount of air is much greater than the amount of fuel, usually between 14.7:1 and 15:1, depending on the type of fuel system.
- Air gap
-
- The space between the magnetic poles or between rotating and stationary assemblies in a motor or generator
- In a Regulator it is the distance between the contact Armature and the iron core that when magnetized, draws the armature down.
- The distance or space between the Reluctor tooth and Pick up coil
- The distance between the two electrodes of a spark plug. See
- Gap with points or knobs, adjusted to breakdown at a specified voltage and hence limit voltages to this value.
- Section of air, usually short, in a magnetic circuit, esp. in a motor or generator, a relay, or a choke. The main flux passes through the gap, with leakage outside depending on dimensions and permeability.
- Air gap voltage
- Voltage across a gap or equivalent filler of nonmagnetic material across the core of a choke, transformer, or other magnetic device.
- Air-guard
- (AG) An American Motors air injection system that uses an air pump to supply air into the exhaust manifold to reduce HC and CO emissions.
- Air gulp system
- A system in vehicles with secondary air injection or induction, which prevents an very rich mixture of air-fuel from entering the inlet manifold during deceleration. If it did enter, unburned fuel would be forced over the hot exhaust system causing backfiring (i.e., uncontrolled detonation). The air gulp system prevents this condition by allowing a quantity of air to combine with the rich mixture in the inlet manifold.
- Air gulp valve
- A diverter valve which adds an amount of air to the rich air-fuel mixture entering the intake manifold during deceleration.
- Air hammer
- A hammer-tool that is powered by compressed air and used for riveting, or chipping. Sometimes called an air gun or gun.
Air Hammer
- Air hold fitting
- A tool which uses air pressure to keep the valves closed when working on an OHV engine. The device is screwed into the spark plug holes and air pressure keeps the valves from dropping down. In this way the valve seal or valve spring can be replaced without removing the cylinder head.
- Air horn
-
Carburetor Air Horn
- The upper part of a carburetor into which the air is drawn. The choke butterfly is located in this air horn.
- It is also a term used for a warning horn which is operated by forcing compressed air through a reed.
- Air horn baffle
- Used on some Rochester Quadrajet carburetors to prevent incoming air from forcing fuel into the secondary wells through the bleed tubes. Prevents secondary-nozzle lag during heavy acceleration.
- Air hydraulic brake power-assist unit
- A unit consisting of an air cylinder or chamber, hydraulic cylinder(s) and control valve in which driver effort is combined with force from the cylinder piston or chamber diaphragm to displace fluid under pressure for actuation of the brake(s).
- Air-hydraulic system
- An air brake system that uses a single air chamber to power a hydraulic master cylinder that applies the wheel friction assemblies through conventional brake calipers and wheel cylinders.
- Air injection
- A system that injects fresh air into the exhaust ports or a Thermal reactor, for additional conversion of Carbon monoxide to carbon dioxide and combustion of unburned Hydrocarbons (unburned fuel vapors) found in the exhaust gases as it comes in contact with the high heat in the exhaust manifold. Also called air induction.
- Air injection manifold
- The duct inside the cylinder head or the tube outside the cylinder head feeding secondary air into the exhaust ports.
- Air injection reaction system
- (AIR system) The AIR system helps to reduce Hydrocarbons and Carbon monoxide levels in the exhaust by injecting air into the exhaust ports of each cylinder during cold engine operation, or directly into the Catalytic converter during normal operation. It also helps the Catalytic converter to reach proper operating temperature quickly during warm-up. If a GM car has an Air pump, the system is an AIR otherwise it is a PULSAIR system.
- Air injection system
- (AIS) any system that injects air into the exhaust stream to promote more complete oxidation of unburned exhaust gases.
- Air inlet valve
- An adjustable door, often vacuum operated, in the plenum blower assembly that permits election of outside or inside air for automotive heating and cooling systems.
- Air intake
-
- Any opening introducing air into an aircraft; the opening for the main engine air is usually implied if unqualified.
- The opening through which air enters a component such as the carburetor, fuel injection system, radiator, heating system, or ventilation system.
- Vent in a carburetor through which air is sucked to mix with the gasoline vapor from the jet.
- Air-intake guide vanes
- Radial, toroidal or volute vanes which guide the air into the compressor of a gas turbine, or the supercharger of a reciprocating engine.
- Air jet
- A small jet in the air passage of a carburetor. It meters the amount of air fed to the diffuser in an air bleed carburetor. See
- Airless spraying
- A paint spraying process where the coating material (i.e., paint) is not atomized by a stream of air. Instead, it is subjected to high pressure and forced through a narrow jet or nozzle which causes it to be atomized.
- Airless spray gun
- A paint spraying tool used in Airless spraying.
Airless spray gun
- Air Lift Axle
- An air-powered axle which, when lowered, will both convert a vehicle into a multi-axle unit and provide greater load carrying capacity
- Air line
-
- A pipe, hose, or duct in a vehicle which permits the flow of air or vacuum.
- The supply line coming from an air compression tank to drive air tools or inflate tires.
- Straight line drawn on the magnetization curve of a motor, or other electrical apparatus, expressing the magnetizing force necessary to maintain the magnetic flux across an air-gap in the magnetic circuit.
- Air lock
-
- A bubble of air trapped in a fluid circuit which interferes with normal circulation of the fluid.
- Device by which access is obtained to the working chamber (filled with compressed air to prevent entry of water) at the base of a hollow caisson. The worker at surface enters and is shut in an air-tight chamber filled with air at atmospheric pressure. Pressure within this air-lock is gradually raised to that used in the working chamber, so that the worker can pass out through another door and communicate with the working chamber.
- Air management system
- (AMS) used to control the injected air to the exhaust manifold and catalytic converter. This improves the pollutant conversion efficiency in the converter.
- Air management unit
- (AMU) -- An assembly of pressure switches, and other valves located in a chassis cross-member, designed to control the pneumatic accessory functions of a vehicle using the multiplex electrical system.
- Air mass flow
- In a gas turbine power plant, the quantity of air which is ingested by the compressor, normally expressed in pounds or kilograms per second.
- Air mass meter
- An instrument which measures both engine intake air mass and factors which affect air density, such as temperature, humidity, and pressure.
- Air mass sensor
- An airflow detection device that uses the changing resistance of a heated wire in the intake airstream to measure the mass of the air being drawn into the engine. Also referred to as a hot-wire sensor.
- Air outlet
- The vent or opening where the passage of air exits -- especially in systems for air conditioning, ventilation, and defrosting as air enters the passenger compartment or flows out of the compartment.
- Air outlet valve
- A vacuum operated door which directs air flow into the heater core or ducts, usually located in or near the plenum blower assembly. A vacuum operated door which directs air flow into the heater core or ducts, usually located in or near the plenum blower assembly.
- Air Over
- (AO) An electric motor intended for Fan and Blower service and cooled by the air stream from the fan or blower
- Air pollution
- Contamination of the earth's atmosphere by various natural and man-made pollutants such as smoke, gases, dust, etc.
- Air Port
- A circular opening or window through the side of a ship or deck house to provide light or ventilation.
- Air pressure
-
- The atmospheric pressure.
- Tire pressure.
- The force of air coming from a compressor used to power air tools or apply air brakes.
- Air pump
-
Air pump (Air Injection system)
- The device that supplies the fresh air needed by the Air injection system.
- A reciprocating or centrifugal pump used to remove air, and sometimes the condensate, from the condenser of a steam plant.
Air pump
See - Any device used for transferring air from one place to another. A compressor increases the pressure, a Vacuum pump reduces the pressure and a blower causes a rapidly moving air blast
- A device used in the emissions system to provide fresh air into a vehicle's exhaust to help complete the combustion process and reduce emissions. To get accurate lambda measurements with the LM-1, air pumps should be temporarily disabled.
- Air quality
- The extent to which air is free from contaminants, conventionally taken to be the respiratory irritants nitrogen dioxide and sulfur dioxide.
- Air Quality Management District
- (AQMD) A term used principally in California to describe administrative districts organized to control air pollution. Nationwide, AQMDs are parallel to the areas designated for classification against the National Ambient Air Quality Standards (NAAQS). Generally, AQMDs and their national parallel encompass multiple jurisdictions and closely follow the definition of Consolidated Metropolitan Statistical Areas and Metropolitan Statistical Areas.
- Air ratchet
- A Ratchet tool powered by air pressure from an air compressor
Air ratchet
- Air ratio
- The ratio of actual intake air volume to the air volume theoretically needed for complete combustion of a particular amount of the fuel. This ratio is represented by the Greek letter lambda λ (which looks like the letter y upside-down). See
- Air resistance
- The resistance of the air to forward movement, sometimes called aerodynamic drag. This is a factor of the shape of the vehicle, the objects which stick out (i.e., mirrors, mufflers, bumpers), the amount of turbulence at the rear of the vehicle, the nature of the vehicle's skin surface, and the amount of air going through the vehicle for cooling and ventilation. The faster you go, the greater the air friction (air friction = velocity x velocity). The faster you go, the greater the amount of power needed to overcome this Drag (power = velocity x velocity x velocity).
- Air Ride Suspension
- (ARS) A suspension system in which the load is supported on air-filled rubber bags rather than steel springs. The engine's air compressor fills the reservoir tanks which supplies air for the suspension and the air brake system.
- Air scoop
- A forward facing aerodynamic device or opening used to Duct cool outside air to some part of the vehicle such as the carburetor Intake, the brakes, the radiator, or an Oil cooler.
Air Scoop
- Airscoop
- See
- Air screw
- Any type of screw designed to rotate in air; defined in 1951. Term now obsolete and replaced by Propeller, a device for propelling aircraft, and Fan, a rotating bladed device for moving air in ducts or wind tunnels.
- Air select valve
- A valve in a two-stage catalytic converter with secondary air injection. It is operated by a solenoid and is triggered by the electronic control module. It directs air to the exhaust valve ports or to the midbed catalytic converter, depending on operating conditions.
- Air sensor
-
- A detection device which checks for the presence of air pollutants entering the passenger compartment. If the pollutant concentration is too high, it operates flaps to cut off the external air to the air conditioning system.
- An air cone with a floating plate which measures air flow and determines plunger position on K-Jetronic type systems
- Air shield
- British term for Air deflector.
- Air shock absorber
- A shock absorber or damper which has a rubber bladder filled with compressed air. As the air pressure increases the vehicle is raised. The system is used in automatic leveling suspensions.
- air shutter
- An adjustable device for varying the size of the Air inlet(s) regulating primary or secondary air.
- Air silencer
- A device which is placed in the air cleaner assembly to reduce the sucking noise that air makes as it enters.
- Air-spaced coil
- Inductance coil in which the adjacent turns are spaced (instead of being wound close together) to reduce self-capacitance and dielectric loss.
- Air spring
- A high pressure air-filled spring used in the suspension fork of some bicycles or the suspension of some cars.
- Air standard cycle
- A standard cycle of reference by which the performance of different internal-combustion engines may be compared, and their relative efficiencies calculated.
- Air standard efficiency
- The thermal efficiency of an internal-combustion engine working on the appropriate air standard cycle.
- Air-suspended power booster
- A type of power booster that contains atmospheric pressure in both chambers of the booster when the brake pedal is at res. When the pedal is applied, the front chamber is opened to manifold vacuum, causing the diaphragm of the booster to move toward the master cylinder which assist the driver in the application of the brakes.
- Air suspension
- A Suspension system using air rather than metal springs to support the vehicle and control ride motions. Air springing results in a smoother ride, because the natural frequency of vibration of an air spring does not vary with loading as it does with metal springs. Air springs can be made very soft for the lightly loaded condition and the pressure automatically increased to match any increase in load, thus maintaining a constant sprint vibration period any load.
Air suspension
- Air suspension power booster
- A type of power booster that contains atmospheric pressure in both chambers of the booster when the brake pedal is at rest. When the pedal is applied, the front chamber is opened to manifold vacuum causing the diaphragm of the booster to move toward the master cylinder which assists the driver in the application of the brakes.
- Air switching valve
- (ASV) a valve in an air injection system that senses intake manifold vacuum and during heavy loads, dumps part of the air pump output to the air cleaner to reduce air injections system pressure.
- Air system
- See
- Air temperature sensor
- (ATS) A detection device which monitors the fluctuation of temperature in the air conditioning system so that the temperature in the cab of a vehicle can be maintained.
- Air-to-air intercooler
- A heat exchanger used on a turbocharged engine, which uses liquid coolant from the rad to cool the air coming from the turbo into the intake manifold.
- Air tool
- A tool such as an impact driver or drill which is powered not by electricity, but by air pressure coming from an air compressor.
- Air Toxics
- Toxic air pollutants defined under Title II of the CAA, including benzene, formaldehyde, acetaldehyde, 1-3 butadiene and polycyclic organic matter (POM). Benzene is a constituent of motor vehicle exhaust, evaporative and refueling emissions. The other compounds are exhaust pollutants.
- Air transformer
- A device which is placed between the compressor and a paint spray gun to provide clean spraying air and to regulate the oil pressure.
- Air-valve carburetor
- A type in which a spring-closed or weight-closed air valve opens in response to engine demand. This valve, through suitable linkage, varies the fuel-orifice opening to secure the desired mixture ratio throughout the range of operation. SU and Stromberg CD carburetors operate on this principle, referred to also as Constant-vacuum, Constant-depression, or variable-Venturi.
- Air vent
- A valve, either manual or automatic, used to remove air from the highest point of a coil or piping assembly
- Air volume spraying
- A method of spray application which involves higher volume and lower pressure of air than high-pressure air spraying.
- AIS
-
- Abbreviation for Air injection system.
- Abbreviation for Automatic Idle Speed motor
- AIT
- Abbreviation for Air Inlet Temperature sensor--Used to measures inlet air temperature for fueling
- AIV
-
- Abbreviation for atmospheric/automatic inlet valve, a system used on early motorcycle engines in which the intake valve is held shut by a weak spring and opens by atmospheric pressure when the falling piston creates a vacuum in the cylinder.
- Abbreviation for air injection valve