为改善柴油机起动性能并降低起动过程的烟度,以某款国六轻型柴油机为研究对象,采用车载483烟度计实时测量起动过程烟度,开展起动转矩、轨压、主喷角度、起动过程开关废气再循环(exhaust gas recirculation,EGR)阀对柴油机起动性能和烟...为改善柴油机起动性能并降低起动过程的烟度,以某款国六轻型柴油机为研究对象,采用车载483烟度计实时测量起动过程烟度,开展起动转矩、轨压、主喷角度、起动过程开关废气再循环(exhaust gas recirculation,EGR)阀对柴油机起动性能和烟度影响的试验研究。试验结果表明:增大起动转矩能明显改善柴油机起动性能,轨压、主喷角度、起动过程开关EGR阀对起动性能影响不大;适当增大起动转矩、增大轨压、减小主喷角度、关闭EGR阀均能降低柴油机起动烟度。展开更多
Starting of combustion engines is a typical transient operating mode that has sigrdficant influence to the engine performance.Due to the distinct variations in the pathes of air intake and fuel injection,the model of ...Starting of combustion engines is a typical transient operating mode that has sigrdficant influence to the engine performance.Due to the distinct variations in the pathes of air intake and fuel injection,the model of the engine system contains considerable uncertain parameters.To search effective control schemes that guarantee desired performance,engine starting control is proposed as a benchmark challenge problem.As a challenging result,a model-based control scheme is developed perviously.In this work,the benchmark problem is revisited and a modification for the fuel injection path control of the previous work is proposed by integrating a time sequence regressive based parameter tuning strategy.Validation by the benchmark problem simulator shows that although the new strategy has simple structure,similar control performance is obtained.Especially,the new strategy has potential extensibility with learning based methods to further improve the performance of the benchmark problem on engine starting control.展开更多
文摘为改善柴油机起动性能并降低起动过程的烟度,以某款国六轻型柴油机为研究对象,采用车载483烟度计实时测量起动过程烟度,开展起动转矩、轨压、主喷角度、起动过程开关废气再循环(exhaust gas recirculation,EGR)阀对柴油机起动性能和烟度影响的试验研究。试验结果表明:增大起动转矩能明显改善柴油机起动性能,轨压、主喷角度、起动过程开关EGR阀对起动性能影响不大;适当增大起动转矩、增大轨压、减小主喷角度、关闭EGR阀均能降低柴油机起动烟度。
基金Foundation of State Key Laboratory of Automotive Simulation and Control(No.20161101)the National Natural Science Foundation of China(No.61703179).
文摘Starting of combustion engines is a typical transient operating mode that has sigrdficant influence to the engine performance.Due to the distinct variations in the pathes of air intake and fuel injection,the model of the engine system contains considerable uncertain parameters.To search effective control schemes that guarantee desired performance,engine starting control is proposed as a benchmark challenge problem.As a challenging result,a model-based control scheme is developed perviously.In this work,the benchmark problem is revisited and a modification for the fuel injection path control of the previous work is proposed by integrating a time sequence regressive based parameter tuning strategy.Validation by the benchmark problem simulator shows that although the new strategy has simple structure,similar control performance is obtained.Especially,the new strategy has potential extensibility with learning based methods to further improve the performance of the benchmark problem on engine starting control.
