新型缸内直喷定容燃烧试验系统关键技术分析

Analysis of the Key Technologies of the New Direct Injection Constant Volume Combustion Test System

汽油机定容式缸内直喷技术,对汽车动力性和燃油经济性及排放有着重要的应用价值。通过分析当下国内外研究中存在的问题,设计了一套定容燃烧器试验系统。介绍了定容燃烧器控制系统的关键组成部分,展示了油压控制单元、直流升压单元和分时驱动单元的设计原理。通过不同电感仿真值的结果及喷油器的雾化响应情况,可以表明所设计的系统满足试验要求。

The GDI（ Gasoline Direct Injection engine） technology of gasoline engines has important application value to the vehicle power,fuel economy and emission. A set of test systems of constant volume burner is designed by analyzing the problems existing in the current domestic and foreign research. The key components of the control system of the constant volume burner are introduced,and the design principle of the oil pressure control unit,DC booster unit and time division drive unit is presented. Simulation results of different inductance and the response of the fuel injector indicate that the designed system can meet the test requirements.