What is the function of the PVC valve in a car?

[CaydenAnn]

Its main functions are: to guide the gases from the crankcase into the intake manifold through the PCV valve, and to allow a small amount of air to enter the intake manifold directly from the air filter via the PCV valve. This helps avoid issues such as icing at the throttle, incomplete combustion, and worsening emissions, while preventing blow-by gases from entering the atmosphere and preventing engine oil deterioration. Below is a related introduction: Definition: The PVC valve in a car is a component of the engine's crankcase forced ventilation system, consisting of a valve body, valve, valve cover, and spring. Effects of a faulty car PVC valve on the vehicle: The engine may experience shaking during operation, unstable idle speed, and large amounts of white smoke from the exhaust pipe. Since it is located inside the crankcase, a faulty PVC valve may lead to internal corrosion, accelerated wear, and further shortening of the engine's lifespan.