High Quality New Injector Nozzle 0 433 171 564 0433171564 DLLA140P826 Common Rail Injector Nozzle for Bosch Spare Parts

For the blockage of metal impurities inside the injector nozzle, the source of the blockage is determined through the comparative analysis of the metallographic structure. The method is simple, quick, easy to operate, and can be detected and judged by using conventional instruments, so it has practical value that can be promoted. The fuel injection system of an engine is a component that atomizes fuel and distributes it in the combustion chamber to mix with air. It is mainly composed of fuel injector and fuel injector body. The fuel injector is the terminal part of the entire fuel supply system of the diesel engine, and it is also an important part to maintain the normal operation of the diesel engine. The precision couple of the needle valve and the needle valve body in the fuel injection nozzle body is the core precision couple of the fuel injection system, and its excellent performance directly affects the injection characteristics of the fuel injection system, thereby affecting the power of the engine, Economy, emissions, reliability. Generally, there will be three failure modes of cavitation, wear and sticking in the injector assembly, among which the stuck failure will directly lead to the failure of the engine to work normally. Stuck failure can be divided into two types: sintering and impurity (metal and non-metal) stuck. Here, the author introduces a method to determine the source of metal impurity blockage inside the nozzle, so as to provide a basis for formulating countermeasures for similar failure forms.