Explain the effect of positive crankcase ventilation (PCV) system on engine emission.
PCV system: The purpose of PCV system is to remove the harmful gases from the crankcase before damage occurs and combine them with the engine’s normal incoming air: fuel mixture. PCV system uses a variable flow PCV valve accurately matches ventilation flow with blow-by production characteristics. By accurately matching these two factors, crankcase ventilation performance is optimized, while engine performance and drivability remains unaffected
positive crankcase ventilation