应用二甲醚的电控单体泵喷射系统仿真研究

The mathematic model of EUP and the simulation software of the system by using of the Matlab/simulink are established on the basis of the working principle of Electronic Unit Pump (EUP)、the physical and chemical characters of Dimethyl Ether (DME). The study demonstrates that the maximum injection pressure of DME and the quantity of DME in a circulation decrease; the curve of lift of valve in injection is similar to triangle , the rate of up and down of which is lower; at the same time in order to get better injection capability of the system, it is reasonable to increase the width of the pulse and decrease the ratio of area between the pump and spout of injector.