The basic requirement for optimal fuel delivery is determined by the data supplied to the ECM by the mass air flow sensor. Other sensors and switches are used for the following measurements:
- coolant temperature;
- engine crankshaft speed;
- oxygen content in exhaust gases;
- determining the position of the top dead center of the piston of the first cylinder in the compression stroke.
The location of the elements of the system for monitoring and reducing the toxicity of exhaust gases in the engine compartment of vehicles with engines of 1.6 liters and 1.8. 2.0 l
1 - absolute pressure sensor in the intake manifold (IDA); 2 - intake air temperature sensor (IAT); 3 - coolant temperature sensor (EATING); 4 - throttle position sensor (TPS); 5 - camshaft position sensor (CMP); 6 - crankshaft angle sensor (CKP); 7 - heated oxygen sensor; 8 - nozzles; 9 - idle speed modulator (ISA); 11 - knock sensor; 12 - blocking switch; 15 - air conditioner compressor relay; 16 - solenoid valve of the fuel vapor recovery system (PCSV); 17 - control relay; 18 - ignition coil
1 - absolute pressure sensor in the intake manifold (IDA); 2 - intake air temperature sensor (IAT); 3 - coolant temperature sensor (EATING); 4 - throttle position sensor (TPS); 5 - camshaft position sensor (CMP); 6 - crankshaft angle sensor (CKP); 7 - heated oxygen sensor; 8 - nozzles; 9 - idle speed modulator (ISA); 11 - knock sensor; 12 - blocking switch; 15 - air conditioner compressor relay; 16 - solenoid valve of the fuel vapor recovery system (PCSV); 17 - control relay; 18 - ignition coil
Location of elements of the system for monitoring and reducing the toxicity of exhaust gases in the passenger compartment
10 - vehicle speed sensor (VSS); 13 - ignition lock; 14 - ECM; 19 - diagnostic socket (DLC)
1, 2, 4, 9
3
5, 18
6
7
8
11
12
14
15, 17
16
19
Various sensors and switches report any changes in operating conditions and send appropriate signals to the ECM. This allows the ECM to adjust the duration of the injector opening and maintain the optimum mode for reducing the toxicity of harmful substances in the exhaust gases and engine operation in various vehicle operating conditions.
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.