High Quality Common Rail Control Valve Set Assembly F00RJ02266 for Diesel Injector 0445120126

 In the diesel engine, the needle valve in the closed fuel injector plays an indispensable and important role, and it is also an important part to start and shut off the high-pressure fuel on time. At the end of fuel injection, the rapid seating of the needle valve will cause an impact on its seat surface. For the diesel engine, due to the high operating speed, the seating time of the needle valve is relatively short, so it will have a strong impact on the seating surface. In order to prolong the life of the needle valve and have a certain degree of reliability, in the process of designing the closed injector, the limiting index adopted is the seat surface stress caused by the impact force. Even though there are many factors that affect the impact stress of the seat surface, in practical operation, it mainly revolves around two aspects, namely: the structure type of the needle valve and the opening pressure of the needle valve. Therefore, the parameter design, optimization analysis and wear analysis of the collision of the needle valve coupling and the collision position of the needle valve coupling are very necessary.