Cost-Effective New Fuel Injector 0 445 110 049 Diesel Common Rail Injector 0445110049 Engine Parts

Diesel engine has the advantages of large output torque, high thermal efficiency, widely used in road transport, industrial production, etc. With the improvement of China's emission standards, reducing emissions has become one of the important research directions of diesel engine technology. Improve the fuel injection characteristics, so that the fuel is fully atomised, is an effective measure to reduce emissions’. High pressure common rail technology can improve injection pressure, injection control precision and response speed, improve fuel atomisation, make oil and gas mixing more efficient, combustion more fully, and ultimately achieve the purpose of reducing emissions. As the core component of this technology, the stable pressure inside the common rail tube is the key to reduce emissions. When the common rail system works, the high pressure oil pump pumping and injector spraying lead to the constant change of pressure in the common rail tube, the pressure in the rail is difficult to be maintained stably and fluctuates around the target rail pressure, the pressure fluctuation is related to the operating conditions of the diesel engine and the structural parameters of each component in the system, and a more stable pressure in the common rail tube can be obtained by improving the key parameters. It is found that reducing the needle valve lift and extending the residence time of the needle valve at the maximum lift is conducive to the stability of the injector;] It is found that the diesel engine rotational speed has a greater influence on the frequency distribution of pressure fluctuations, and the frequency distribution is basically unaffected by the duration of the injection period and the target rail pressure, and it only affects the amplitude; it is also found that, when the rail pressure fluctuation and the time of the injection period have the corresponding cyclicity, the superposition of the pressure fluctuation caused by the original pressure fluctuation in the rail and the injection can be reduced, so as to obtain a more stable common rail pressure by improving the key parameters. It is found that when the rail pressure fluctuation and the injection time have corresponding periodicality, the superposition of the original pressure fluctuation in the rail and the pressure fluctuation caused by oil injection can be reduced, so as to inhibit the pressure fluctuation in the rail.