DICTIONARY OF AUTOMOTIVE TERMS - "By"

Bye-channel
Waterway dug round the side of a reservoir or dam to carry off surplus water from the streams entering it.
Bypass
  1. A road which avoids the congested area of a city traffic.
  2. An alternate route for a flowing substance.
  3. To go around something to avoid it.
  4. A passage at one side of, or around, a regular passage
Also see
Bypass air screw
A screw located on the airflow sensor of a fuel injection system. It adjusts the amount of air allowed into the air-fuel mixture.
Bypass air solenoid
(BPA) A device used to control the idle speed on some fuel-injected vehicles.
By-pass capacitor
A capacitor having a low reactance for frequencies of interest connected in shunt with other components so as to short-circuit them for signal frequency currents.
Bypass filter
An Oil filter that constantly filters a portion of the oil flowing through the engine.
Bypass ratio
The ratio of the by-pass airflow to the combustion airflow in a dual-flow turbojet having a single air intake.
Bypass Solenoid
See
Bypass System
See
Bypass turbojet
A turbojet in which part of the compressor delivery is by-passed around the combustion zone and turbine to provide a cool, slow propulsive jet when mixed with the residual efflux from the turbine.
Also see
Bypass valve
  1. (BPV) A valve that can open and allow fluid or gas to pass through in other than its normal channel.
  2. A switching device (Silicon-controlled rectifier or, in the past, mercury arc valve), connected across the converter switching devices of a high-voltage DC transmission system, normally not conducting but able to maintain flow of current whenever the main conducting devices have to be interrupted.
  3. A valve by which the flow of fluid in a system may be directed past some part of the system through which it normally flows, e.g., an oil-filter in a lubrication system.
Also see

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