Miller循环对单缸柴油机性能的影响特性研究
|
摘要
利用GT-Power软件建立某型单缸柴油机的仿真模型,在此基础上通过改变进气门关闭时刻深入研究Miller循环对单缸柴油机综合性能的影响。研究结果显示,进气门延迟关闭角度为0℃A和5℃A时,柴油机的综合性能较佳。与进气迟闭角为0℃A时相比,进气迟闭角度为5℃A时的NOx排放最大会下降10.56%,输出扭矩也有所减少,但Soot排放和燃油消耗率有所增加,且Soot排放的增长率最大超过27.9%。
The simulation model of a single cylinder diesel engine is established by using GT-Power software. On this basis, the influences of Miller cycle on comprehensive performance of a single cylinder diesel engine is studied by changing the closure timings of intake valves. The results show that the comprehensive performance of the diesel engine is better when the delay angles of intake valve closure are 0℃A and 5℃A. NOx emissions decrease up to 10.56%; Soot emissions increase up to 27.9%; Torque declines a little and fuel consumption rate also increases a little when delay angle of intake valve closure is 5℃A compared to the baseline value 0℃A.
The simulation model of a single cylinder diesel engine is established by using GT-Power software. On this basis, the influences of Miller cycle on comprehensive performance of a single cylinder diesel engine is studied by changing the closure timings of intake valves. The results show that the comprehensive performance of the diesel engine is better when the delay angles of intake valve closure are 0℃A and 5℃A. NOx emissions decrease up to 10.56%; Soot emissions increase up to 27.9%; Torque declines a little and fuel consumption rate also increases a little when delay angle of intake valve closure is 5℃A compared to the baseline value 0℃A.
引文
[1]Al-Sarkhi,A.el al.Efficiency of a Miller engine[J].Applied Energy,2006,83(4):343-351.
[2]刘鑫,魏胜利,冷先银,等.米勒循环模式的柴油机性能及NO_x排放的数值研究[J].广西大学学报:自然科学版,2015(2):397-404.
[3]袁文华,何爽,田江平,等.大功率中速米勒循环柴油机NO_x排放特性数值模拟[J].中南大学学报:自然科学版,2014(1):84-90.
[4]孙秀英,姜斌.小型柴油机降低排放性能的试验研究[J].农业装备与车辆工程,2012,50(1):61-63.
[5]Rinaldini C A,Maltarelli E,Golovitchev V I.Potential of the Miller cycle on a HSDI diesel automotive engine[J].Applied Energy,2013,112(4):102-119.
[6]Tavakoli S,Jazayeri S A,Fathi M,et al.Miller cycle application to improve lean burn gas engine performance[J].Energy,2016,109:190-200.
[2]刘鑫,魏胜利,冷先银,等.米勒循环模式的柴油机性能及NO_x排放的数值研究[J].广西大学学报:自然科学版,2015(2):397-404.
[3]袁文华,何爽,田江平,等.大功率中速米勒循环柴油机NO_x排放特性数值模拟[J].中南大学学报:自然科学版,2014(1):84-90.
[4]孙秀英,姜斌.小型柴油机降低排放性能的试验研究[J].农业装备与车辆工程,2012,50(1):61-63.
[5]Rinaldini C A,Maltarelli E,Golovitchev V I.Potential of the Miller cycle on a HSDI diesel automotive engine[J].Applied Energy,2013,112(4):102-119.
[6]Tavakoli S,Jazayeri S A,Fathi M,et al.Miller cycle application to improve lean burn gas engine performance[J].Energy,2016,109:190-200.