Multidimensional Modeling of Fuel Spray, Combustion and Emissions of F912Q Diesel Engine  

F912Q柴油机喷油、燃烧、排放的多维仿真研究(英文)

作　　者：王珂[1] 张幽彤[1] 

机构地区：[1]北京理工大学车辆与交通工程学院,北京100081

出　　处：《Journal of Beijing Institute of Technology》2002年第3期246-250,共5页北京理工大学学报（英文版）

摘　　要：A computational fluid dynamics (CFD) study was carried out on a four stroke air cooled DI diesel engine, F912Q manufactured by Beinei Company, by using the KIVA 3V code. A three dimensional mesh was set up to model the cylinder, intake passage and exhaust passage. The calculated in cylinder pressure history and emissions are compared with the engine test data. The results show reasonable agreement. The effects of swirl ratio and spray angle on fuel spray, evaporation and mixing are investigated. It is found that there are optimum swirl ratio and spray angle for better evaporation and combustion.利用KIVA 3V程序对F91 2Q风冷、直喷柴油机进行了仿真研究 .仿真计算采用三维网络结构 ,计算区域包括进气道、进气阀、气缸、排气阀、排气道 .仿真计算得到的缸内压力 时间曲线和排气污染物各成份分别与试验数据进行了对比 ,结果表明仿真计算可以较好地再现实际的发动机工作过程 .在此基础上 ,利用KIVA 3V程序研究了涡流强度以及喷雾锥角对燃油喷射、蒸发和油气混合过程的影响 .仿真结果表明 :通过适当加大涡流比可以显著促进燃油蒸发和油气混合过程 ;喷雾锥角对发动机蒸发和燃烧过程有显著的影响 。

关 键 词：computational fluid dynamics (CFD) KIVA engine simulation 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]