Auto injection valve for Man 0 445 120 217 high pressure common rail fuel injector

Precautions for reducing injector failure

1.the inspection of the injector
First, check the fuel injection pressure and tightness of the injector. Secondly, check the atomization quality of the injector, carefully observe the shape and number of the spray column, the fineness and distribution of the oil droplets, and pay attention to whether there is fuel leakage before the valve opening pressure and after the injection. Good atomization quality is that the spray column meets the requirements, and no oil droplets rush or leak, and the entire spray process is accompanied by a crisp "beep" sound.

2.the precautions during assembly
Before the injector is installed in the cylinder, first check whether the sealing ring on the injector is intact, then check the sealing surface cleanliness and sealing of the injector and the cylinder head, and clean and grind if necessary to prevent gas leakage. , burned the injector. At the same time, note that the fastening nut of the injector on the cylinder head should not be over-tightened, and it must be strictly in accordance with the instructions in the instruction manual.

3. try to make the diesel engine in good working condition
In the case of meeting the requirements of use, the diesel engine should be kept as high as possible under high load conditions, and the load is above 80%, which is the best combustion quality.

4.the rational use of fuel
The most suitable fuel should be used, and the fuel with low sulfur content should be selected as much as possible to ensure the cleanliness of the fuel and reduce the content of impurities and water.