positive crankcase ventilation valve

(PCVV) a one-way valve which controls the flow of vapors from the crankcase into the engine

Dictionary of automotive terms. 2015.

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  • Crankcase ventilation system — A crankcase ventilation system is a way for gases to escape in a controlled manner from the crankcase of an internal combustion engine. A common type of such system is a positive crankcase ventilation (PCV) system, the heart of which is a PCV… …   Wikipedia

  • PCV valve — The Positive Crankcase Ventilation valve, or PCV valve, is a one way valve that ensures continual evacuation of gases from inside a gasoline internal combustion engine s crankcase.ExplanationAs an engine runs, gases and combustion pressure are… …   Wikipedia

  • PCV valve — ¦pē(ˌ)sēˈvē noun Etymology: positive crankcase ventilation : an automotive emission control valve that recirculates gases (as from blow by) through the combustion chambers to permit more complete combustion * * * Auto. a valve used to control and …   Useful english dictionary

  • PCV valve — (PCVV)Part of the positive crankcase ventilation system, which reroutes crankcase blowby to the intake manifold and back to the engine, where it is reburned in the cylinders as part of the fuel air mixture. This cuts emission pollution and… …   Dictionary of automotive terms

  • PCV valve — Auto. a valve used to control and direct the flow of gases during positive crankcase ventilation. * * * …   Universalium

  • 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

  • Chevrolet Corvette C5 Z06 — This article is about the Chevrolet Corvette C5 Z06. For general Corvette Z06 information, see Chevrolet Corvette Z06. C5 Z06 Manufacturer C …   Wikipedia

  • PCVV — Acronym for positive crankcase ventilation valve …   Dictionary of automotive terms

  • Saab H engine — The Saab H engine is a redesign of the Saab B engine. Despite the name it is not an H engine, but a slanted inline 4. The H engine was introduced in 1981 in the Saab 900 and was also used in the Saab 99 from 1982 onwards and the Saab 90. It… …   Wikipedia

  • Manifold (automotive) — In automotive engineering, an intake manifold or inlet manifold is the part of an engine that supplies the fuel/air mixture to the cylinders. An exhaust manifold or header collects the exhaust gases from multiple cylinders into one pipe. The word …   Wikipedia

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