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Asynchronous

[1] Not having a constant period or not synchronous. [2] A means of operating electronic circuits without a common timing signal to synchronize events; rather, the events occur at random times.

Asynchronous Fuel Timing

Fuel injector firing which is not in direct relationship tto the ignition reference pulses.

At

[1] Astatine An element with the atomic number of 85 [2] An acronym for automatic transmission.

ATA

An acronym for the American Trucking Association.

Atari Dashboard

A digital instrument panel; so called due to its resemblance to an Atari video game.

ATC

1. A trade name by Honda for a three-wheeled all-terrain cycle. 2. An acronym for automatic temperature control. 3. after top center 4. Automatic Transfer Case

ATC Servo Programmer

A mechanically operated switch to control blower speed whenever the blower switch is in the AUTO position on some car lines.

ATCV

Air temperature control valve.

ATDC

An acronym for after top dead center.

ATF

An acronym for automatic transmission fluid.

ATM

Actuator test mode.

ATMO

1. A racing engine running on atmospheric pressure. 2. An acronym for atmosphere.

Atmosphere

The mass of air that surrounds Earth.

Atmospheric Ozone

As ultraviolet (UV) rays from the sun reach Earth, they are combined with smog and other pollutants to produce atmospheric ozone. Atmospheric ozone, unlike stratospheric ozone, is considered harmful. Whenever possible it is to be avoided.

Atmospheric Pollution

Impurities and contaminants in thee atmospheric environment, many of which are caused by humans.

Atmospheric Pressure

The pressure of the atmosphere at any given location. At sea level, it is 14.696 psia (101.33 kPa absolute).

Atmospheric Pressure Sensor

A device designed to send an electrical signal to the central processing unit relative to the atmospheric pressure at any given time.

Atmospheric Suspended

A term that describes a power brake vacuum booster in which atmospheric pressure is present on both sides of the diaphragm when the brakes are released. A obsolete type of vacuum booster.

Atom

[1] A basic unit of matter consisting of protons, neutrons, and electrons arranged in such a way that retains its separate unique characteristics. [2] The smallest of the building blocks of the universe. [3] The smallest division of an element still retaining all of the original properties of the element.

Atomization

The breaking down of a liquid into small particles, like a mist, by the use of pressure.