同济大学学报（自然科学版）2011，Vol.39Issue(11)：1687-1692,6.DOI:10.3969/j.issn.0253-374x.2011.11.022
直喷汽油机自由-撞壁喷雾可视化台架开发及试验
Experiment and Development of Visualization Setup of Free-impinging Spray for GDI Engine
摘要
Abstract
The visualization setup and control system of spray and wall-impingement for gasoline direct injection (GDI) engines is presented. The design of high pressure fuel supplying system, the driving mode of GDI engine injector and spray control system were demonstrated in detail. Besides, the spray penetrations and spray cone angles under different injection pressure and ambient pressure conditions, the spray development and fuel concentration change under different ambient pressure conditions and spray wall-impingement characteristics under different impingement angle and impingement distance conditions, were investigated by emlpoying the visualization setup. The experimental resultsshow that the spray tip penetration and spray cone angle increase with the increasing of the injection pressure; the spray tip penetration decreases with the increasing ambient pressure, but the spray cone angle increases. In addition, compared to the impingement angle with 60°, the impingement angle with 75° is more favorable to spray development and atomization. Thus the developed visualization setup and control system of spray and wall-impingement can work reliably and steadily.关键词
直喷汽油机/定容弹/喷雾特性/喷雾撞壁/控制系统Key words
gasoline direct injection/ constant volume bomb/ spray characteristics/ spray wall-impingement/ control system分类
能源科技引用本文复制引用
范钱旺,李理光,陈以川,石堃..直喷汽油机自由-撞壁喷雾可视化台架开发及试验[J].同济大学学报（自然科学版）,2011,39(11):1687-1692,6.基金项目
吉利-同济汽车研究院合作项目(1709253018) （1709253018）
