Common Rail Diesel Engine Electronic Fuel Injection Technology

With the world engineering machinery, transport vehicles, such as the increase in the number of diesel engine exhaust emissions on the Earth's environment has become the main cause of pollution, how to take measures to protect human life the Earth's environment has been a priority. China from the 1980s formulated the relevant standards, environmental protection as a major task. At the same time, countries around the world have begun to seek and explore other methods and take other effective measures to reduce and control initiative pollutant emissions. Electronically controlled common rail fuel injection technology is from the numerous methods and measures in the emergence of a more successful pollution control diesel emissions from new technologies.
Diesel Engine high-speed operation, the diesel injection process time only 1000 of a second. Experimental proof, blasting process, the pressure of the entire high-pressure pipeline is the time and location of the different change. Compressible nature of diesel in the diesel and high pressure tubing pressure fluctuations, the actual fuel pump and injector status under the law of supply plunger greater difference. Tubing, sometimes the pressure fluctuations in the jet, so that the pressure within the high-pressure pipeline rose again, reaching the injector valve opening pressure, the Commissioner will have Closed the valve and reopened the secondary injection phenomenon. Because it is impossible to burn the second injection, so an increase of smoke and hydrocarbons (HC) emissions and increase fuel consumption. In addition, each spray cycle of the high-pressure pipeline residual pressure will change, with the spray caused instability, particularly in the low-speed region prone to the phenomenon. Injection serious not only uneven, it will not happen intermittent jet phenomenon. In order to address diesel engine fuel pressure changes caused by the defects, a modern diesel engine As a "Common Rail" EFI technology.