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The PCV valve therefore closes when positive pressure is present, to prevent it from reaching the crankcase. The crankcase air outlet, where the PCV valve is located, is generally placed as far as possible from the crankcase breather.
In 1968, the engine had the chrome covers, but without the Chevrolet name, connected to a PCV valve and a chrome 14 in × 3 in (355.6 mm × 76.2 mm) drop-base open-element air cleaner assembly fitted with a crankcase breather on a 780 cu ft/min (22 m 3 /min) vacuum secondary Holley 4-Bbl carburetor. 1969 Corvette and 1970 Z/28 engines were also ...
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A simplified version of the definition is: The k v factor of a valve indicates "The water flow in m 3 /h, at a pressure drop across the valve of 1 kgf/cm 2 when the valve is completely open. The complete definition also says that the flow medium must have a density of 1000 kg/m 3 and a kinematic viscosity of 10 −6 m 2 /s , e.g. water.
However, the tripartite mixture resulting from employing both EGR and PCV in an engine (i.e. exhaust gas, fresh air, and oil vapour) can cause the buildup of sticky tar in the intake manifold and valves. This mixture can also cause problems with components such as swirl flaps, where fitted. (These problems, which effectively take the form of an ...
why is it titled PCV valve when the significant topic is the principle and application of PCV itself? the valve is only a small part of the entire system. there's no dedicated entry for PCV - i propose the article is renamed Positive Crankcase Ventilation and heavily rewritten with direct references and the mistakes corrected. i'm happy to do ...