Separation of Oil-Gas Mixture: The oil-gas separator can separate gas mixed with oil, ensuring accurate fuel metering and normal operation of the fuel supply system.

Filtering Gas from Engine Oil: Through the separator, gas in the engine oil is filtered out, ensuring optimal fluidity and lubrication of the engine oil, reducing wear and corrosion of parts due to insufficient lubrication.

Reducing Engine Oil Leakage: By separating oil from the gas expelled from the crankcase, it reduces the leakage of oil through the crankcase breather to the outside of the engine, thereby minimizing oil leakage.

Environmental Protection Role: The oil-gas separator forces pressure relief for the valve chamber and crankcase, directing waste gas into the intake manifold for secondary combustion, reducing atmospheric environmental pollution and improving engine economy.