【摘要】 基于MPC5644A单片机开发了新一代的柴油机燃烧状态分析单元:使用曲轴转速信号得到0.2°CA的缸压采集触发信号,实时采集各缸缸内压力信号,并合理分配计算负荷,计算出控制所需的燃烧状态指标。在中型高压共轨柴油机上的试验表明:该基于MPC5644A的柴油机燃烧状态分析单元,能够实时采集缸压信息并计算出瞬时燃烧放热率、累积燃烧放热率、指示平均有效压力和50%放热点等燃烧状态指标,满足基于缸压信息的柴油机控制的要求。更多还原

【Abstract】 Based on MPC5644A microcontroller,a new in-cylinder combustion analysis unit was developed.The unit took cylinder pressure signal once every 0.2°CA,and calculate combustion indexes according to the pressure and its position information cycle by cycle.Verification test in a 4.75Lcommon rail diesel engine demonstrates that the unit successfully acquires the real-time information and provides the combustion indexes,such as instantaneous and integrated heat release rate,IMEP,CA50,etc.,satisfying the control requirements of diesel engine.更多还原