Location of exhaust gas toxicity control and reduction system components in the engine compartment of vehicles with SOHC engines
A – crankcase ventilation valve; B – fuel vapor recovery system valve.
Location of exhaust gas toxicity control and reduction system components in the engine compartment of vehicles with DOHC engines
A – crankcase ventilation valve; B – fuel vapor recovery system valve.
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Scheme of the exhaust gas toxicity control and reduction system and fuel vapor recovery
1 – oxygen sensor; 2 – catalytic converter; 3 – oxygen sensor; 4 – coolant temperature sensor; 5 – spark plug; 6 – ignition coil; 7 – ignition switch; 8 – control relay; 9 – ECM amplifier; 10 – crankcase ventilation valve; 11 – acceleration sensor; 12 – idle speed control system valve; 13 – ECM; 14 – air flow meter and temperature sensor; 15 – air filter; 16 – throttle position sensor; 17 – knock sensor; 18 – activated carbon canister cleaning valve; 19 – crankshaft angle sensor; 20 – fuel tank; 21 – canister with activated carbon; 22 – muffler.
To reduce emissions of harmful substances into the atmosphere along 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.