Optimizing Spray and Combustion in Diesel Engine by Multidimensional Numerical Simulation  

作　　者：周磊 赵长禄 张付军 

机构地区：[1]School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing100081, China

出　　处：《Journal of Beijing Institute of Technology》2005年第4期406-410,共5页北京理工大学学报（英文版）

基　　金：SponsoredbytheMinisterialLevelAdvancedResearchFoundation(0900A011)

摘　　要：The calculation of spray and combustion in diesel engines is described by using the softwares FIRE and BOOST. The application of the resulting computational method to the simulation of fuel spray and breakup, mixture formation and combustion in a heavy duty diesel is presented. According to detailed insight into the governing processes provided by the simulation results, various aspects of the dependence of the spray propagation and combustion on the chamber geometry and spray angle are discussed. Then, global cylinderaveraged pressure traces are extracted from the space and time resolved field quantities and compared to incylinder pressure measurements. Finally, an optimized configuration of the chamber geometry and spray angle with a new injection rate of higher injection pressure is proposed.The calculation of spray and combustion in diesel engines is described by using the softwares FIRE and BOOST. The application of the resulting computational method to the simulation of fuel spray and breakup, mixture formation and combustion in a heavy duty diesel is presented. According to detailed insight into the governing processes provided by the simulation results, various aspects of the dependence of the spray propagation and combustion on the chamber geometry and spray angle are discussed. Then, global cylinderaveraged pressure traces are extracted from the space and time resolved field quantities and compared to incylinder pressure measurements. Finally, an optimized configuration of the chamber geometry and spray angle with a new injection rate of higher injection pressure is proposed.

关 键 词：multidimensional simulation DIESEL spray propagation COMBUSTION chamber geometry 

分 类 号：TK421.2[动力工程及工程热物理—动力机械及工程]