The electronic engine management system allows you to realize the following advantages:
- Precise fuel dosing in any operating mode, which ensures low fuel consumption with high power.
- Reduction of the content of harmful substances in exhaust gases thanks to precise fuel dosing and the use of a catalytic converter.
- Self-diagnosis of the engine management system provides the ability to quickly find a fault. The engine management system has a fault memory. If a defect is detected during operation, it is entered into the device's memory. If the engine has faults, a special device can display a list of them, allowing you to identify and eliminate the fault yourself. Refer to Section Troubleshooting. It is advisable to carry out the work in a service station.
The engine control unit is a high-speed minicomputer. It determines the optimal injection time and the amount of fuel injected. At the same time, the control unit's operation is coordinated with other vehicle systems, such as the gearbox control system or theft protection system.
The engine management system elements maintain their high performance for a long time and require virtually no maintenance. Only the air filter and spark plugs require replacement during maintenance. Serious adjustment and repair work requires the use of complex diagnostic devices. Refer to Section Troubleshooting.
Adjustment of idle speed and CO concentration is not required as part of maintenance.
Safety precautions when working with the engine management system/petrol engine
The fuel system is under pressure! When opening the system, fuel may escape. Therefore, any leaked fuel must be wiped off with a rag. Gasoline vapors are poisonous and flammable. Use safety glasses. Ensure good ventilation of the workplace. Have a fire extinguisher at hand.
To avoid injury to people and/or damage to the injection and ignition system, the following must be observed:
- Do not touch or disconnect spark plug wires while the engine is running or the starter is engaged.
- Disconnect and connect injection system pipes and ignition wires, as well as electrical wires of measuring devices only with the ignition switched off.
- People with a pacemaker are not allowed to work with the electronic ignition system.
- When checking compression, fuel injection is not allowed.
When working with the injection system, it is necessary to observe general safety and cleanliness rules, refer to Section Safety precautions and rules for maintaining cleanliness when working with the fuel system.