Electronically controlled high-pressure fuel injection system in general briefing

At present, the international new electronically controlled high-pressure fuel injection system is mainly divided into two categories: (1) Electronic pulse of high pressure fuel injection pump system, (2) electronically controlled common rail high pressure fuel injection system.

Electronic pulse of high pressure fuel injection pump system is the main characteristics: cam-driven high-pressure fuel injection pump to achieve the establishment of processes and fuel injection process, these two processes on the timing can not be completely separated by high-speed electromagnetic valve bypass China Flow Control to replace the traditional mechanical-discharge control, measurement of fuel and time control. Mainly include two types: (1) electronic control pumps - high-pressure fuel injection system of nozzles (2) Electronic Control Unit Pump high pressure fuel injection system. At present, two fuel injection system the maximum injection pressure can reach more than 150 MPa. Electronic pulse of high pressure fuel injection pump system although there are many advantages, but also inherits the traditional fuel injection system of some shortcomings, mainly due to: Diesel fuel injection pressure to be the speed limit, at low speed, low pressure fuel injection .