Factory Direct Sale Fuel Pump Rotor Head 146403-4020 Fuel Injection Pump

Compared with traditional direct-injection diesel engines, high-pressure common rail diesel engines separate the fuel pressure accumulation and injection processes, and have larger stroke ratios and compression ratios. The diesel engine design is better, allowing it to run at low loads for a long time, greatly reducing harmful gases. emissions and fuel consumption. When the high-pressure common rail system of a diesel engine fails, the rail pressure of the common rail system cannot be established and maintained normally, and the efficient and stable operation of the diesel engine cannot be guaranteed. Therefore, it is crucial to quickly find the fault location of the common rail system and take correct troubleshooting measures. A certain ship uses a high-pressure common rail diesel engine. When accelerating at sea, the personnel on duty in the centralized control room found from the monitoring computer that the speed of the left main engine was unstable. At the same time, the personnel on duty in the engine room found through the control box next to the machine that the fuel rail pressure did not reach the set value and the oil suction valve did not reach the set value. The opening fluctuates in a wide range. Subsequently, the host monitoring computer in the centralized control room displayed alarm information such as "Injection module 1 minor alarm, fuel suction valve opening too large, fuel rail pressure set point not reached, left host overload alarm" and other alarm messages. After the left host shut down, the left host A comprehensive inspection of the high-pressure common rail system found that the plungers of the two high-pressure oil pumps were severely worn. There are two main reasons for diesel engine failure. First, the high-pressure common rail cannot build pressure normally; second, there is leakage in the high-pressure common rail system.