What Causes Exhaust Gas in the Crankcase?
1 Answers
The reasons for exhaust gas generation in the engine crankcase include: 1. Piston ring wear: Severe wear of piston rings or cylinder liners, or issues with the breather; 2. Overfilling of oil: Excessive oil filling during refueling can also lead to increased exhaust gas emission from the crankcase; 3. Gas from the air pump: If the air pump is used for engine oil cooling, gas from the air pump might also be a cause. Functions of the engine crankcase ventilation system: 1. Preventing oil deterioration; 2. Preventing leakage from crankshaft oil seals and crankcase gaskets; 3. Preventing atmospheric pollution by various oil vapors.