Location of the elements of the system for monitoring and reducing the toxicity of exhaust gases in the engine compartment of cars with an SOHC engine
A - crankcase ventilation valve; B - valve of the fuel vapor recovery system.
Location of elements of the system for monitoring and reducing the toxicity of exhaust gases in the engine compartment of vehicles with a DOHC engine
A - crankcase ventilation valve; B - valve of the fuel vapor recovery system.
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Scheme of the system for monitoring and reducing the toxicity of exhaust gases and trapping fuel vapors
1 – oxygen sensor; 2 - catalytic converter; 3 – oxygen sensor; 4 - coolant temperature sensor; 5 - spark plug; 6 - ignition coil; 7 - ignition lock; 8 - control relay; 9 - ECM amplifier; 10 - crankcase ventilation valve; 11 - acceleration sensor; 12 - valve of the idle speed control system; 13 - ECM; 14 – flow meter and air temperature sensor; 15 - air filter; 16 - throttle position sensor; 17 - knock sensor; 18 - valve for cleaning the canister with activated carbon; 19 - crankshaft angle sensor; 20 – fuel tank; 21 - canister with activated carbon; 22 - silencer.
To reduce emissions of harmful substances into the atmosphere, together with exhaust gases, the following exhaust gas toxicity reduction systems are used:
- fuel vapor recovery system;
- crankcase ventilation system;
- exhaust gas recirculation system;
- catalytic converter.