Common Rail Fuel Injection Technology for Diesel Engine

With the world's construction machinery, transport vehicles and other increase in the number of diesel exhaust emissions have become the Earth's environment One of the main causes of pollution, how to take measures to protect the survival of the human environment is a matter of urgency. China from eighty years Our main products include plunger barrel,(VE Pump Parts), Injectors,Repair Kits, Feed Pump and more. On behalf of the corresponding development of the relevant standards, environmental protection as a major task. At the same time, countries around the world have begun to look for and Explore other methods and take other effective technical measures to take the initiative to reduce and control pollutant emissions. Common rail fuel injection It is a relatively successful new technology to control diesel engine emissions from many methods and measures. When the diesel engine is running at high speed, the diesel injection process takes only a few thousandths of a second. Experiments show that during the injection process, high pressure The pressure across the tubing varies with time and position. The compressible nature of diesel fuel and the pressure of diesel fuel in high pressure tubing Fluctuation, so that the actual fuel injection state and the fuel pump provided by the plunger fuel supply rules are quite different. The pressure inside the tubing fluctuates It will also increase the pressure in the high-pressure tubing after the injection, so that the pressure of the injector needle valve will be turned on Closed needle valve and re-open the secondary injection phenomenon. As the secondary fuel injection can not be completely burned, so increase the smoke and carbon Hydrogen compounds (HC) emissions, and fuel consumption increases. In addition, the residual pressure in the high-pressure tubing will occur each time after the injection cycle Changes in the environment, resulting in unstable spray, especially in the low-speed region prone to the phenomenon. Serious not only fuel injection is not uniform, And there will be intermittent non-jet phenomenon. In order to solve the diesel fuel pressure changes caused by the shortcomings of modern diesel engine used A kind of called "common rail" of the EFI technology.

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