CAJ | 학술논문

　　为了优化柴油机并联混合动力控制，使用自主的燃烧状态分析单元，对一台2．5 L高压共轨柴油机各缸缸内压力进行采集，并计算出平均指示压力、平均泵气压力和最大缸压等燃烧状态指标；发动机控制单元使用这些指标预估发动机输出的有效扭矩并进行扭矩闭环控制；利用该发动机、自动离合器、超级电容和ISG电机构建了并联式混合动力系统，用以改善原机的动力性和经济性．在发动机台架上的实验结果表明，扭矩预估和扭矩闭环控制效果良好；使用ISG电机快速起动改善了起动阶段的排放和经济性；在等效NEDC工况下，并联混合动力系统比原单一动力发动机油耗下降11．9％，NOx排放下降15．2％，碳烟排放下降9．5％．
　　위료우화시유궤병련혼합동력공제，사용자주적연소상태분석단원，대일태2．5 L고압공궤시유궤각항항내압력진행채집，병계산출평균지시압력、평균빙기압력화최대항압등연소상태지표；발동궤공제단원사용저사지표예고발동궤수출적유효뉴구병진행뉴구폐배공제；이용해발동궤、자동리합기、초급전용화ISG전궤구건료병련식혼합동력계통，용이개선원궤적동력성화경제성．재발동궤태가상적실험결과표명，뉴구예고화뉴구폐배공제효과량호；사용ISG전궤쾌속기동개선료기동계단적배방화경제성；재등효NEDC공황하，병련혼합동력계통비원단일동력발동궤유모하강11．9％，NOx배방하강15．2％，탄연배방하강9．5％．
In order to optimize the control of diesel parallel hybrid power system, an self-developed combustion state analysis unit was used to collect every cylinder's in?cylinder pressure of a 2.5 L common rail diesel engine, and calculate indicated mean effective pressure, pumping mean effective pressure, and peak cylinder pressure, etc. With these indicators, the engine control unit may preestimate effective torque outputted by the engine and control the torque in a closed loop. A parallel hybrid power system was set up using this engine, an automated clutch, an ISG motor and an ultra?capacitor, so as to improve the transient performance of former engine and make it more e?conomical. Experimental results on the engine pedestal proves that the torque preestimation and closed?loop control work well, and there's a good potential for the reduction of fuel consumption and pollutant emissions. Under an e?quivalent NEDC cycle, when compared to the original diesel engine, the hybrid power system was able to reduce a?bout 15.2% NOxemission and 9.5% soot emission while fuel consumption was also 11.9% lower.