摘要
利用CFD软件建立了缸内直喷(GDI)发动机的缸内分层燃烧过程三维模型,并通过仿真计算研究了喷油时刻与点火时刻对GDI发动机分层燃烧过程的影响,采用示功图验证的方法对比了实验结果与模拟结果,证明两者具有较好的一致性。通过对比不同喷油与点火相位对分层燃烧过程及排放的影响,得出了文中给定工况下相对最佳的喷油、点火相位。本文方法也适用于标定其他工况下的最佳喷油相位及点火相位。
In this paper,a 3DCFD model of the combustion process inside the cylinder of GDI engine is established and simulation is carried out to analyze the effects of the injection phase and ignition phase on the stratified charge combustion of the engine.The method of indicator diagram is adopted to compare the experimental results with the simulation results,which are in good consistence.By comparing the effects of the injection phase and ignition phase on the stratified charge combustion process and emission,the best fuel injection phase and ignition phase are obtained under specified condition.The method can also be used to calibrate the best injection phase and ignition under other conditions.
作者
秦秋实
吴志军
于秀敏
杨松
鲍龙
QIN Qiu-shi WU Zhi-jun YU Xiu-min YANG Song BAO Long(School of Automotive Studies, Tongji University, Shanghai 201804, China College of Automotive Engineering, Jilin University, Changchun 130022, China)
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2017年第1期105-112,共8页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金项目(51276079
51376139)
关键词
动力机械工程
缸内直喷发动机
分层燃烧
仿真计算
相位标定
dynamic medanical engineering
gasoline direct injection（GDI）engine
stratified charge combustion
simulating calculation
phase calibration
