Pic. 3.40. PCV system
1. The crankcase ventilation system removes unburned hydrocarbons (NS) into the atmosphere, using a mixture of fresh air from exhaust gases and oil vapor from the crankcase, directing them into the intake tract, then it is all burned.
2. The system requires the crankcase to be sealed; it is necessary that the valve cover filler plug and the dipstick for measuring the oil level are sealed.
3. The system consists of a connecting hose from the air intake to the valve cover, an oil separator containing a steel hole that collects oil droplets and drains them back into the pan, and a one-way PCV valve that screws into the intake manifold. The valve allows gases only into the manifold, without releasing them in the opposite direction.
4. The PCV filter is designed to separate dirt and other substances located in the crankcase to prevent oil from contaminating the air filter element.