摘要
利用激光衍射技术研究了喷射压力对汽油喷雾前锋粒径分布、喷雾前锋粒径和全程粒径的影响,以及喷雾前锋不同空间粒径的分布特性。试验结果表明:喷射压力增大有助于改善雾化质量,促使喷雾前锋粒径分布重心向小粒径方向移动;喷雾前锋粒径(SMD和Dv90)较喷雾全程粒径(SMD和Dv90)大;喷雾前锋油束轴线附近SMD较油束边缘大,但是油束轴线附近Dv90较油束边缘小。
In this paper,the effects of injection pressure on the droplet size distribution characteristics in spray front field,spray front and full range droplet size of gasoline direct injection,as well as space distribution characteristics of the droplet size in the spray front field are investigated the using laser diffraction technique.The results indicate that,first,the increase in injection pressure can improve the atomization quality,and promote the droplet size distribution of the spray front field moving to the small diameter direction;second,the spray front droplet size（SMD and Dv90）is bigger than the full range droplet size（SMD and Dv90）;third,in the spray front field,the SMD near the near the spray plume axis is bigger than that in the marginal region and the Dv90 near the spray plume axis is smaller than that in the marginal region.
作者
虞浏
刘忠长
刘金山
刘江唯
杜宏飞
程鹏
YU Liu;LIU Zhong -chang;LIU Jin- shan;LIU Jiang -wei;DU Hong- fei;CHENG Peng(State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China;R＆D Center, China FAW Group Co. , Ltd. , Changchun 130011, China)
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2018年第3期720-726,共7页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金重大科研仪器设备研制专项项目(21327803)
关键词
动力机械与工程
车辆工程
汽油机
喷雾特性
激光衍射
粒径
喷雾前锋
power mechinery and engineering
vehicle engineering
gasoline engine
spray characteristics
laser diffraction
droplet size
spray front
