高密度_低温柴油机燃烧理论与技术的研究与进展_苏万华【荐】.pdfVIP

内 燃 机 学 报 第 26 卷（2008 ）增刊 Vol.26 （2008 ）Suppl Transactions of CSICE 文章编号：1000-0909 （2008 ）增-0001-08 26-093 高密度-低温柴油机燃烧理论与技术的研究与进展 苏万华 (天津大学 内燃机燃烧学国家重点实验室，天津 300072) 摘要 ：本文以节能和超低排放为目标，先后开展了“早喷”预混压燃燃烧，稀扩散燃烧和复合燃烧等理论与技术的研 究。阐述了其基本技术路线、优势和局限性。在此基础上，作者课题组提出了柴油机燃烧过程混合和化学时间尺度控 制及燃烧路径控制概念，最终形成了高密度-低温燃烧理论，并在实验发动机上通过燃烧电子控制技术的创新实现了 在欧 Ⅴ排放水平上柴油机高热效率和简化或取消后处理器的目标。 关键词 ：柴油机；高密度-低温燃烧；热效率；排放 中图分类号：TK421 文献标志码 ：A Advanced High Density-Low Temperature Combustion Theory and Technology SU Wan-hua (State Key Laboratory of Engines ，Tianjin University ，Tianjin 300072 ，China) Abstract ：Targeting at high thermal efficiency and low emissions in heavy duty diesel engines ，a series of engine combus- tion theory and technologies was put forward in the past years ，which includes the technology of the PCC I combustion real- ized by the multi-pulse fuel injection during the early period of compression stroke of engines ，the lean diffusion combus- tion(LDC) on the basis of high mixing rate combustion chamber and high injection pressure and the MULINBUMP com- pound combustion which is the combustion of PCCI combustion and the LDC combustion. Based on the study of advantages and limitations of the above combustion technologies ，the author and his research team presented new concept of mixing and chemistry time-scale control and combustion path control ，which led to proposal of theory and technology of high density- low temperature combustion(HD-LTC). CFD modeling and engine experimental re