Friday, 23 April 2021, 11:57 AM
Site: IMI eLearning
Course: IMI eLearning (IMI eLearning)
Glossary: Automotive Glossary
V

Vacuum Advance

Automatic engine ignition timing adjustment using the inlet manifold pressure to sense engine load. The pressure, as a vacuum, is applied to a diaphragm assembly to move the base plate in the ignition distributor.

Vacuum Assisted Brakes

A brake booster system that uses inlet manifold vacuum in a brake servo unit to increase the driver's braking effort. The vacuum can also be provided from a vacuum pump on diesel engines.

Vacuum Gauge

An instrument for measuring pressure (below atmospheric pressure) of a fluid or a gas.

Vacuum Motor

A motor that is operated by a vacuum such as to move or drive something.

Vacuum Pipes

See Vacuum Hoses

Vacuum Pump

Test equipment that can be used to apply a vacuum.

Vacuum Regulator

A device that either controls vacuum so a set level or one that uses vacuum to regulate another operation.

VAF

Vane Air Flow Sensor.

Valency

Term describes a material that has a free electron.

Valeting

This is the performance of an extremely thorough cleaning, polishing and waxing of an automobile, both inside and out, to produce a showroom-quality result.