起动孔对涡流室柴油机影响的数值模拟研究  

Research on Numerical Simulation of Effect of Starting Orifice on an IDI Diesel Engine

作　　者：杜家益[1] 

机构地区：[1]江苏理工大学汽车学院,镇江市212013

出　　处：《江苏理工大学学报（自然科学版）》1997年第4期52-56,共5页Journal of Jiangsu University of Science and Technology(Natural Science)

基　　金：国家自然科学基金

摘　　要：应用数值模拟方法，对吊钟型涡流室柴油机的起动扎进行研究，分析对比了起动工况下有、无起动扎对涡流室内流场及燃油喷雾过程的影响．起动扎的开设，对整个涡流室内的主涡流形态影响不大，而对燃油喷雾过程则起促进作用，从而改善了涡流室柴油 机的冷起动性能．For the first time, research on the numerical simulation of BellType IDI diesel engine is made under starting condition by comparing and analyz-ing the effect of the starting orifice upon the flow field and spray process. Thecalculated results show that the starting orifice has little effect on the pattern ofthe main swirl in the swirl chamber. However, the starting orifice improves thefuel spray process, thus, resulting in the high cold starting performance.

关 键 词：涡流室 柴油机 流场 数值模拟 燃油喷雾 起动孔 

分 类 号：TK423.2[动力工程及工程热物理—动力机械及工程]