Dictionary of automotive terms. 2015.
thermal vacuum valve — (TVV) A valve with the same function as a thermal vacuum switch. TVS units, which serve to interrupt exhaust gas recirculation when the temperature is too low, are located in the vacuum line between the ECR valve and inlet manifold or carburetor … Dictionary of automotive terms
vacuum switch — See thermal vacuum switch … Dictionary of automotive terms
choke thermal vacuum switch — (CTVS) a switch used on some GM vehicle to deny vacuum to either the front or the auxiliary choke vacuum breaks. Its purpose is to slow the opening of the choke and to provide better driveability when the engine is cold … Dictionary of automotive terms
oil thermal vacuum switch — (OTVS) a switch used by some GM vehicle to shut off vacuum to the early evaporation (EFE) valve when oil temperature reaches 150° F … Dictionary of automotive terms
Vacuum switch — Prior to effective engine computers, engine vacuum was used for many functions in an automobile. Vacuum switches were employed to regulate this flow, and were commonly controlled by temperature, solenoids, mechanically, or directly. They operated … Wikipedia
switch — A device that opens and closes an electric circuit. See actuating switch ambient temperature switch authority Limit Switch battery master switch dimmer switch dipper switch door pillar switch fuel cut off switch fuel pump shut off switch … Dictionary of automotive terms
thermal time valve — A valve which senses temperature, typically the temperature under the hood, and gives full vacuum advance when the temperature is below 10° above this temperature, the thermal time valve allows the distributor vacuum to be controlled by the… … Dictionary of automotive terms
Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… … Wikipedia
Switch — For other uses, see Switch (disambiguation). Electrical switches. Top, left to right: circuit breaker, mercury switch, wafer switch, DIP switch, surface mount switch, reed switch. Bottom, left to right: wall switch (U.S. style), miniature toggle… … Wikipedia
TVS — Acronym for thermal vacuum switch or temperature vacuum switch … Dictionary of automotive terms
