期刊文献+

基于低温燃烧的全工况EGR率控制策略优化

Optimization of EGR Rate Control Strategy under Entire Working Conditions Based on Low Temperature Combustion
下载PDF
导出
摘要 针对燃烧模式切换过程中EGR存在大跨度阶跃情况,拟采用小分阶EGR阶跃控制策略的过渡切换模式来探究切换过程的平顺性。为了获得不同工况下的最优EGR率,研究了低温燃烧下EGR率对燃烧和排放的影响,并在不同的转速和负荷条件下探究了EGR率的作用规律。结果表明:不同转速下的EGR率对燃烧和排放影响的差异比较小;负荷改变对EGR率的作用效果有明显的影响;根据负荷和指示平均有效压力将低温燃烧的工况分为3个区间,给出了不同区间的最佳EGR率,为燃烧模式切换过渡过程中利用分阶EGR方法来控制燃烧参数和稳定排放奠定了先期基础;同时,根据低温燃烧的不同负荷条件,提出了基于负荷的全工况下EGR的优化控制策略。 For the large step span of EGR during the switch of combustion mode,the transition mode of smallstep EGR step control strategy was proposed to explore the smoothness of switching process.In order to obtain the optimal EGR rate under different working conditions,the effects of EGR rate on combustion and emission under low temperature combustion were studied and the laws of EGR rate under different speeds and loads were analyzed.The results show that the effect of EGR rate has little influence on combustion and emission at different speeds.The effect of load change on EGR rate is obvious.According to the load and IMEP,the working condition of low temperature combustion is divided into three sections,and the optimal EGR rate of each section is proposed,which lays an early foundation for controlling combustion parameters and stabilizing emissions by using step-by-step EGR method in the switching process of combustion mode.At the same time,the optimal control strategy of EGR under entire working conditions is proposed according to different loads of low temperature combustion.
作者 侯政良 曹杰 陈京瑞 石磊 李静 HOU Zhengliang;CAO Jie;CHEN Jingrui;SHI Lei;LI Jing(Naval Equipment Department,Datong 037000,China;China North Engine Research Institute(Tianjin),Tianjin 300400,China;School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Beijing Central Area Power Supply Development Co.,Ltd.,Beijing 100000,China)
出处 《车用发动机》 北大核心 2019年第6期43-50,共8页 Vehicle Engine
关键词 低温燃烧 废气再循环 控制策略 最优控制 low temperature combustion EGR control strategy optimal control
  • 相关文献

参考文献6

二级参考文献50

  • 1陈征,尧命发,郑尊清,张全长.甲醇/二甲醚双燃料发动机全负荷范围优化策略的研究[J].内燃机学报,2008,26(6):493-498. 被引量:3
  • 2胡铁刚,周龙保,刘圣华,李维.变压缩比二甲醚均质充量压燃发动机排放特性的研究[J].内燃机工程,2005,26(5):10-13. 被引量:2
  • 3朱昌吉,刘忠长,许允.瞬态工况下EGR率测量方法的研究[J].内燃机学报,2006,24(3):276-279. 被引量:9
  • 4韩永强,刘忠长,朱昌吉,王志伟.增压中冷车用柴油机EGR率阶跃工况响应[J].燃烧科学与技术,2007,13(3):209-213. 被引量:5
  • 5Dubreuila Anthony, Foucher Fabrice. HCCI combus- tion: Effect of NO in EGR EJ]. Proceedings of the Combustion lnstitute, 2007, 31(2): 2879-2886.
  • 6Yoshizawa K, Mori K, Matayoshi Y, et al. Develop- ment of an exhaust gas recirculation distribution predic- tion method using three-dimensional flow analysis and its application [J]. Journal of Engineering for Gas Turbines andPower, 2003, 125(4): 1066-1074.
  • 7Kim Dae Sik, Lee Chang Sik. Improved emission char- acteristics of HCCI engine by various premixed fuels and cooled EGR [J]. Fuel, 2006, 85 (5/6) : 695-704.
  • 8Kirn Dae Sik, Kim Myung Yoon, Lee Chang Sik. Re- duction of nitric oxides and soot by premixed fuel in par- tial HCCI engine [J]. Journal of Engineering for Gas Turbines andPower, 2006, 128(3): 497-505.
  • 9Hardy W L, Reitz R D. A study of the effects of high EGR, high equivalence ratio, and mixing time on emis- sions levels in a heavy-duty diesel engine for PCCI com- bustion[C]//SAE Paper. Detroit, MI, USA, 2006, 2006-01-0026.
  • 10Uchida N,et al.Combined effects of EGR and supercharging on diesel combustion and emissions[C]..SAE 930601.

共引文献43

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部