A fault in the engine emission control system means a fault in the engine exhaust system. After the failure of the exhaust system, the automobile exhaust emissions will increase, the emissions may exceed the standard, and the dynamic performance of the engine may also decrease. The failure of exhaust system may be caused by the failure of engine oil supply system and ignition system, so it is best to go to the repair shop to check and eliminate the failure in time.
Overheating and tempering of the engine causes sintering and peeling of the carrier of the three-way catalyst, and the exhaust resistance increases. The key of the automobile exhaust system is to exhaust the exhaust gas from the engine, which can also reduce the emission of pollutants and reduce the noise generated by the engine in the working process. Automobile exhaust system is mainly used for light vehicles, mini-cars and buses, motorcycles and other motor vehicles.
The reason why the fault light of engine exhaust system is on
1, poor gasoline quality, poor oil products and substandard fuel may lead to abnormal mixing ratio, electronic equipment failure and abnormal exhaust system.
2. Electronic components of the air intake system are faulty, such as oxygen sensor damage, three-way catalytic device damage, carbon canister electromagnetic valve damage, throttle carbon deposit, engine carbon deposit, etc.
3. The control program of the engine has not been updated or debugged, resulting in engine emission failure.
4. Once the engine fault light is on, it means that the parameters of the engine will change, which may be due to poor atomization of the fuel injector or circuit fault. For example, the spark plug, ignition coil and cylinder line are not working.