The high pressure fuel pipe assembly of the diesel engine is a high pressure pipeline for the high pressure fuel pump to deliver high pressure fuel to the high pressure fuel nozzle. When the diesel engine is in operation, the high pressure fuel pipe assembly is subjected to the heavy impact load of the high pressure fuel and the additional load generated by the vibration of the diesel engine. Therefore, the high pressure fuel pipe assembly connected to the high pressure fuel pump and the high pressure fuel nozzle must have sufficient pressure resistance and the ability to lock, anti-vibrate and prevent leakage.

Compared with the traditional automotive engine core components, engine high pressure fuel pipes have not received special attention for a long time. However, statistics show that in recent years, the failure cases of high pressure fuel pipes have been increasing, and their proportion has entered the automobile for years. The top ten in the number of engine parts failed, and there is an increasing trend.

The high pressure fuel pipe is a component of the high pressure fuel pipe. It is required that the fuel pipe needs to bear a certain fuel pressure and has certain fatigue strength to ensure the sealing requirements of the pipeline. The high pressure fuel pipe for the vehicle mainly appears in the high pressure injection diesel engine and the high pressure injection direct injection. The gasoline engine can withstand the oil pressure required during engine operation.

The high pressure fuel pipe of the car has multiple parts, which are summarized as follows: steering system, brake braking system, and air conditioning system. Each system requires good quality, can withstand a certain high pressure strength, anti-corrosion and other characteristics.