What is the function of the crankcase ventilation system?

[OKayden]

The function of the crankcase ventilation device is: to prevent engine oil deterioration; to prevent leakage from the crankshaft oil seal and crankcase gasket; and to prevent various oil vapors from polluting the atmosphere. Below is relevant information: 1. The reason for crankcase ventilation: Since combustible mixture gas and exhaust gas enter the crankcase, the pressure inside the crankcase will increase, causing engine oil to leak and be lost from the crankshaft oil seal, crankcase gasket, and other places. Oil vapor lost into the atmosphere will increase the engine's pollution of the atmosphere. 2. Precautions: If the crankcase ventilation system fails to work properly, it should be repaired immediately. Otherwise, excessive pressure inside the engine may occur, which can damage the engine. There is also an important component in the crankcase ventilation system, called the oil-gas separator, which is used to separate oil vapor inside the crankcase.