【作者】 王一聪； 隆武强； 田江平； 张强； 何爽； 孟相宇； 马宝光；

【Author】 Wang Yi-cong;LONG Wu-qiang;TIAN Jiang-ping;ZHANG Qiang;HE Shuang;MENG Xiang-yu;MA Bao-guang;Institute of Internal Combustion Engine,Dalian University of Technology;

【机构】 大连理工大学内燃机研究所；

【摘要】 为解决柴油机预混合燃烧着火相位控制难题,本文结合实机实验数据,运用AVL FIRE程序对射流控制压缩着火燃烧系统进行了模拟研究,分析了流场运动情况、着火及燃烧过程。结果表明:点火室内的燃烧产物以射流的方式冲击主燃烧室内柴油预混合气,促进了主燃烧内的流场运动,促进了柴油预混合气的混合过程;主燃室内的柴油预混合气被从点火室内喷出的燃烧产物迅速引燃,实现了柴油预混合燃烧着火相位的主动控制;主燃烧室内的柴油预混合气具有预混合多点自燃和低温燃烧的特点。更多还原

【Abstract】 In order to solve the problem of combustion phasing control for diesel premixed combustion,based on engine experimental data,CFD numerical simulation software,AVL FIRE,was used to analyze airflow movement of jet controlled compression ignition.And the ignition process and combustion process were also analyzed.The results showed that combustion products from ignition chamber jet into main combustion chamber,which promotes the flow inside the main combustion chamber and promotes the mixing process of diesel pre-mixture;diesel pre-mixture of main combustion chamber is ignited rapidly by the combustion products jetted from ignition chamber,thus precise ignition phasing control for diesel pre-mixture is realized consequently;the combustion of premixed diesel mixture in main combustion chamber has the same characteristics of premixed charge multipoint ignition combustion and low temperature combustion.更多还原