Fig. 2-122. Placement of the Simos KSUD elements on the vehicle:
1 — electromagnetic valve for purging the adsorber;
2 - air flow meter;
3 — connector of the oxygen content sensor in the exhaust gases;
4 — throttle body;
5 — controller;
6 — injection system nozzle;
7 — fuel pressure regulator;
8 — ignition coil;
9 — tachometer sensor;
10 — knock sensor connector;
11 - connector with central pin;
12 — crankshaft speed sensor;
13 — crankshaft speed sensor connector;
14 — ignition distributor;
15 - coolant temperature sensor;
16 - knock sensor;
17-connection to "mass";
18 — intake air temperature sensor;
19 — adsorber.
The mass air flow meter is mounted on the air filter housing.
The throttle body, located on the intake manifold, includes the throttle valve, idle speed control valve and potentiometric throttle position sensor.
The idle switch is located on the throttle body. The idle speed controller consists of a stepper motor and a valve that regulates the engine idle speed by changing the amount of additionally supplied air. A potentiometric position sensor mounted on the throttle body provides an engine load signal.
The adsorber is installed on the front right wheel housing. The electromagnetic valve for purging the adsorber, installed there, is controlled by the controller commands.
The exhaust gas oxygen sensor with built-in electric heating element is installed in the exhaust pipe before the catalytic converter. The sensor transmits a voltage signal to the controller proportional to the oxygen content in the exhaust gases when the sensor temperature reaches 300°C.
The details of the fuel injection control subsystem KSUD "Simos" are shown in Fig. 2-123.
Fig. 2-123. Details of the fuel injection control subsystem KSUD "Simos":
1 - air filter;
2 - controller;
3 - air flow meter;
4 — air duct;
5 — throttle body;
6 - inlet manifold;
7 - gasket;
8 - coolant temperature sensor;
9 — crankshaft speed sensor;
10 - exhaust gas oxygen sensor;
11 — crankcase ventilation system control valve;
12 — intake air temperature sensor.
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