电控共轨柴油机预喷射对排放性能的仿真研究  

Simulation research on emissions performance of pilot-injection based on electronically controlled common-rail diesel engine

作　　者：姜峰[1,2] 潘美俊[2] 张洪涛[2] 

机构地区：[1]广西汽车零部件与整车技术重点实验室(广西科技大学) [2]广西科技大学车辆动力与新能源重点研发中心,广西柳州545006

出　　处：《广西科技大学学报》2015年第3期41-46,共6页Journal of Guangxi University of Science and Technology

基　　金：广西自然科学基金项目(2013GXNSFAA019317);广西高校科学技术研究项目(KY2015YB168);广西重点实验室建设项目(14-A-01-04);广西重点实验室开放基金项目(2014KFMS02)资助

摘　　要：描述了柴油机燃烧过程中NOx和碳烟的生成机理,利用发动机仿真软件搭建了某款电控共轨式柴油机预喷射的仿真模型.分析研究了不同预喷射量、不同预喷射与主喷射间隔等因素对NOx和碳烟的影响,最终确定了预喷射量4%,预-主喷间隔角4°CA作为改善该电控共轨柴油机在2 600 r/min工况下的最优预喷射方案;仿真计算对优化电控柴油机预喷射和降低排放具有指导意义.The generation mechanism of NOx and soot in diesel engine was describled in this paper, the software is used to establish the simultion model of pre-injection for common-rail diesel engine. The factors of pilot quantity, interval between pilot and main injection are analyzed to effect the NOx and soot influence, finally the pilot injection quantity of 4%, pilot-main injection interval angle selected as the optimal injection program is confirmed. optimizing pre-injection and decreasing engine emission. 4°CA on the condition of diesel engine 2 600 r/min are The simulation technique has a direction value for

关 键 词：高压共轨 柴油机 仿真研究 预喷射 

分 类 号：TK42[动力工程及工程热物理—动力机械及工程]