What does PCV mean in cars?

[Victoria]

PCV is the abbreviation of the three English words Positive-Crankcase-Ventilation, which means the positive crankcase ventilation system in Chinese. Here is relevant information: 1. Composition: The PCV valve is an important component in the positive crankcase ventilation system, generally consisting of a valve body, valve, valve cover, and spring, and cannot be disassembled. 2. Function: The main function is to direct the gases in the crankcase (the mixture from the combustion chamber that enters the crankcase and the oil vapor) into the intake manifold through the PCV valve, which avoids phenomena such as emission deterioration. It prevents oil vapor from directly entering the atmosphere and also prevents oil deterioration.