The crankcase ventilation valve is controlled by the vacuum created in the intake manifold when the engine is running. When the engine is running at idling speed, the valve is slightly open, as a result of which a small amount of crankcase gases is discharged into the resonant chamber and subsequently burned in the engine cylinders.
The location of the elements of the exhaust gas toxicity reduction system in the engine compartment of cars with a 1.1 liter SOHC engine: A - forced crankcase ventilation valve (PCV); In — the valve of system of catching of steams of fuel (PCSV).
With an increase in the engine speed, the degree of opening of the valve increases, as a result of which the amount of crankcase gases increases, which is discharged into the resonant chamber and subsequently burnt out in the engine cylinders.
The location of the elements of the exhaust gas toxicity reduction system in the engine compartment of cars with a 1.3 liter SOHC engine: A - forced crankcase ventilation valve (PCV); In — the valve of system of catching of steams of fuel (PCSV).
The location of the elements of the exhaust gas toxicity reduction system in the engine compartment of vehicles with a 1.5 / 1.6 l DOHC engine: A - forced crankcase ventilation valve (PCV); In — the valve of system of catching of steams of fuel (PCSV).
Scheme of the system for reducing the toxicity of exhaust gases and trapping fuel vapors of vehicles with an on-board diagnostics system