高性能共轨柴油机电控单元的开发研究

采用高性能的MPC555微控制器,运用模块化设计方法,设计了共轨柴油机电控单元(ECU)的硬件和底层软件.其中硬件模块包括:微处理器(MCU)、电源、输入输出等模块;软件模块包括:初始化、采样处理和输出处理等模块.用该系统在油泵试验台上做了压力控制、油量匹配试验,并在发动机台架上进行了柴油机喷油提前角和燃油压力MAP的匹配研究.试验结果表明,该系统取得了令人满意的控制效果.

Electronic Control Unit for High Pressure Common Rail System Diesel Engines

An electronic control unit(ECU) for high pressure common rail system diesel engines based on Motorola MPC555 is introduced.Using high performance microcontroller MPC555 and adopting schemes of modularization the hardware and fundamental software of the electronic controled unit(ECU) were set up.The hardware is made up of the micro controled unit(MCU),power,input and the output module.The software includes that of initialization,sampling,and outputting module.With this ECU,experiments on rail pressure control and fuel quality at different pulse and rail pressure were carried out,and do some MAP studies on start of injection(SOI) and rail pressure on engine test bench.Experimental results proved that this system can obtain quite fine effects in control.