5.2. System of ventilation of a case (PCV)

Scheme of system of ventilation of a case

1 – generator;
2 – valve of system of ventilation of a case;
3 – air chamber;
4 – wide hose;
5 – air inlet branch pipe.

The valve of system of ventilation of a case is operated the depression created in an inlet collector during the operation of the engine.

During the operation of the engine at an idling rotation frequency, the valve is open slightly therefore a small amount of crankcase gases is taken away in the resonant camera and further is burned up in engine cylinders.

At increase to the frequency of rotation of the engine, extent of opening of the valve therefore the amount of crankcase gases which is taken away in the resonant camera increases increases and further it is burned up in engine cylinders.