In order to make the diesel fuel injected into the cylinder by the injector can burn completely in time, the fuel supply time of the oil pump must be checked regularly. If the fuel supply time is too early, the vehicle will have difficulties in starting and knocking the cylinder; if the fuel supply time is too late, the exhaust will emit black smoke, the engine temperature will be too high, and the fuel consumption will increase.

The matching precision of the needle valve coupling parts of the injector is very high, and the diameter of the injection hole is very small. Therefore, the specified brand of clean diesel oil must be selected strictly according to the seasonal change, otherwise the injector will not work normally.

Do not collide with other hard objects or drop to the ground when cleaning the needle valve of fuel injector, so as to avoid bruise. When replacing the needle valve coupling parts of the injector, the new coupling parts should be soaked in hot diesel oil at 80 ℃ for about 10 s to fully dissolve the antirust oil, and then the needle valve in the valve body in clean diesel oil will be swayed back and forth in the valve body to thoroughly clean. In this way, the failure of sticking the needle valve due to the dissolution of anti rust oil during the operation of the injector can be avoided.

effect

1. Increase the oil pressure (constant pressure): increase the injection pressure to 10MPa ~ 20MPa.

2. Control fuel injection time (timing): fuel injection and stop fuel injection according to the specified time.

3. Control fuel injection quantity (Quantitative): according to the working condition of diesel engine, change the amount of fuel injection to adjust the speed and power of diesel engine.