- Precisely dose the amount of injected fuel in any engine operating mode, which ensures low fuel consumption with optimal vehicle performance.
- Reduce the content of harmful substances in exhaust gases due to precise measurement of the amount of fuel and the use of a controlled catalytic converter.
- Conduct self-diagnostics to quickly find a fault. The system is equipped with a fault memory. If faults occur during operation, they are recorded in the memory. If the engine is not working optimally, the service station can print out a list of faults so that, if necessary, the damage can be repaired independently.
The engine control unit is a small, high-speed computer. It sets the optimal ignition timing, fuel injection timing, and fuel injection quantity. At the same time, the control unit coordinates its actions with other vehicle systems, such as transmission control or anti-theft locks.
The ignition and injection system elements maintain their functionality for a long time and require virtually no maintenance. As part of maintenance, it is only necessary to replace the air filter element and replace the spark plugs. More serious adjustment and repair work can only be performed using special devices.
Safety precautions when working with a gasoline engine injection system
- Do not use open fire, do not smoke, do not keep any red-hot or very hot parts near the workplace. There is a risk of accident! Keep a fire extinguisher at hand.
- Ensure good ventilation of the work area. Fuel vapors are toxic.
- The fuel system is under pressure! Before disassembling the hose connections, relieve the fuel pressure, refer to Section Relieving pressure in the fuel system.
- When disassembling hose connections, for safety reasons, the connection must be covered with a thick cloth.
Caution: When working with injection system components, it is also necessary to observe the general safety and cleanliness rules described in Section General information and safety precautions.
The engine management system components remain functional for a long time and require virtually no maintenance. As part of maintenance, only the air filter element and fuel filter need to be replaced.
(The original version of the article is posted on the website: AUDIMANUAL.ru)