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What is the PCV in a car?

1 Answers

BrantleyFitz

07/30/25 9:10am

The PCV valve in a car is a component of the Positive Crankcase Ventilation system. Here is some relevant information about the crankcase: 1. Concept: The lower part of the cylinder block where the crankshaft is installed is called the crankcase, which is divided into the upper crankcase and the lower crankcase. 2. Function: The crankcase is one of the most important components in the engine. It bears the force transmitted by the connecting rod and converts it into torque, which is then output through the crankshaft to drive other engine accessories. The crankshaft is subjected to the combined effects of centrifugal force from rotating masses, periodic gas inertia forces, and reciprocating inertia forces, causing it to bear bending and torsional loads.

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