EFI in the area of diesel and petrol are the main differences between gasoline machine EFI system is air-fuel ratio control (the ratio of air and gasoline), diesel EFI system by controlling the fuel injection is time to adjust the size of the output, and the diesel engine fuel injection engine control by the speed and accelerator pedal position (drawbars throttle position) to decide. Thus, the basic principle is the basis of computer speed sensor and throttle position sensor input signals, first calculate the basic fuel injection quantity, and then under water temperature, inlet temperature of the air pressure sensor signal amendment, and again from the control sets Position sensor signal feedback amendment, to determine the optimum amount of fuel injection.

Electronic diesel injection system consists of sensors, ECU (computer) and the implementing agencies, and other components. Its mission is to electronically controlled fuel injection system, fuel injection volume, and the realization of the injection timing with the operating status of the real-time control. Using speed, temperature, pressure sensors, real-time detection parameters will be entered into the computer simultaneously, and had been stored values of the parameters of comparison, has been treated in accordance with the calculation of the best value on the fuel pump, exhaust gas recirculation valve, such as preheating Cypriot implementing agencies control, driven fuel injection system to achieve the best diesel engine operating status.

With the world's urban transport vehicles to the sharp increase in diesel engine exhaust emissions on the Earth's environment has become the main source of pollution. Countries around the world have started looking for the technology and to take effective measures to take the initiative to reduce and control the emission of pollutants. Common Rail Diesel Engine Electronic Fuel Injection technology is a more successful pollution control emissions from new technologies.