vacuum switch
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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
vacuum switch — vakuuminis jungiklis statusas T sritis automatika atitikmenys: angl. vacuum switch vok. Vakuumschalter, m rus. вакуумный выключатель, m pranc. interrupteur à vide, m … Automatikos terminų žodynas
vacuum switch — See thermal vacuum switch … Dictionary of automotive terms
ported vacuum switch — (PVS) a temperature actuated switch that changes vacuum connections when the coolant temperature changes (originally used to switch spark port vacuum; now used for any vacuum switching function that requires coolant temperature sensing) … 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
thermal vacuum switch — (TVS) [1] measures either air/fuel temperature, underhood temperature, or coolant temperature, or a combination of any two to regulate the EGR valve accordingly. [2] A temperature sensitive switch that shifts the source of the advance from ported … Dictionary of automotive terms
temperature vacuum switch — (TVS) controls vacuum to the EGR valve and/or canister purge valve based on coolant or intake air temperature. Canister purge and EGR do not typically operate when the engine is cold … Dictionary of automotive terms
thermostatic vacuum switch — A temperature sensitive switch which allows spark advance when engine idles for long periods … Dictionary of automotive terms
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
Vacuum arc — A vacuum arc can arise when the surfaces of metal electrodes in contact with a good vacuum begin to emit electrons either through heating (thermionic emission) or via an electric field that is sufficient to cause field emission. Once initiated, a … Wikipedia
