Electronically controlled high-pressure common-rail fuel injection system is the main features: high-pressure fuel will be established process and the timing of fuel injection process is completely separated by the fuel pressure measurement - time control mode, can be divided into two types: (1), Control of high-pressure common-rail fuel injection system, (2) electronic control of pressure Common Rail fuel injection system.

Electronically controlled high-pressure common-rail fuel injection system for the common rail high pressure for oil, fuel, only depends on the common rail injection pressure in the fuel, oil pressure, high-speed electromagnetic valve can be used to achieve volume injection, injection pressure, injection timing and Injection rate of flexible control. Its typical representatives: (1) Japan's Denso developed by ECD - U2 electronically controlled high-pressure common-rail fuel injection system-then the maximum injection pressure has reached 120 MPa, and have the potential to reach the 150 MPa, using a two three links High-speed electromagnetic valve (TWV). (2) Germany BOSCH companies in the 1990s by the development of the electronic control of high-pressure common-rail fuel injection system, then the largest injection pressure up to 140 MPa, then reached 160 MPa or even 170 MPa, using a two-two high-speed electromagnetic valve.