The advantages of electronic fuel injection control are as follows:
- A) self-diagnosis of the engine power system, which allows you to quickly detect a malfunction. The system registers appearing non-±_ malfunctions, and in case of unsatisfactory operation of the engine, it is recommended to contact the workshop, where, using a special tester, the registered fault codes will be read. These faults can then be rectified in a targeted manner;
- b) accurate dosing of the volume of injected fuel, which reduces fuel consumption while maintaining good dynamic qualities of the car;
- V) Reducing the content of harmful substances in the exhaust gas due to the exact volume of injected fuel and the use of a catalyst.
All parts of the engine management system are designed for a long service life and practically do not require repair. As part of the maintenance, it is only necessary to change the air filter element and the fuel filter. Adjustments and repairs that affect the operation of a diesel engine can only be carried out with the help of expensive instrumentation and therefore should be entrusted to workshops that have the appropriate equipment.
Adjustment of idling speed and engine speed limited by the regulator is not required as part of maintenance.
1.0. Diesel engine power system:
1 - fuel injector with needle lift sensor
2 - exhaust gas recirculation valve
3 - boost air pressure reducing valve
4 - plug of the injector needle lift sensor
5 - crankshaft position/engine speed sensor plug
6 - engine oil temperature sensor
7 - block of main fuses and relays. The injection system control unit, the injection system relay and the glow plug fuse are also located here
8 - damper control valve in the intake manifold (only for vehicles with AFB, AKN engine)
9 - crankshaft position sensor / engine speed
10 - air pressure sensor in the intake manifold
11 - boost air pressure regulator and intake manifold damper control valve (only for vehicles with AFB, AKN engine), throttle position control (only for vehicles with AKE, AYM, BFC, BCZ, BAU engines)
12 - high pressure fuel pump (injection pump)
13 - coolant temperature sensor
14 - mass air flow sensor and intake air temperature sensor
The illustration does not show the following parts:
A - brake light switch sensor and brake pedal position sensor
B- accelerator pedal position sensor
C - preheat relay
D - fuel pump relay
E - power system relay
Attention! Vehicles with a BCZ engine are not equipped with an injector needle lift sensor.
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