喷油嘴流量系数影响因素及其喷射特性研究  

Study on Effected Factor and Injection Characteristics of Nozzle Flow Coefficient

作　　者：俞建达[1] 缪雪龙[1] 杨崴[1] 张永彦[1] 

机构地区：[1]无锡油泵油嘴研究所,江苏无锡214063

出　　处：《现代车用动力》2007年第3期19-23,共5页Modern Vehicle Power

摘　　要：通过理论分析及高压流量试验,分析了喷油嘴结构参数,如压力室形状、喷孔直径、喷孔长度、喷孔锥角等对流量系数的影响,并进行了喷油嘴流量系数对燃油系统喷射特性和柴油机性能、排放的影响研究。研究结果提出了喷油嘴结构参数的合理选择,使流量系数尽量大。With theoretical analysis and high pressure flow test, the influence of nozzle parameters on its coefficient were investigated, nozzle parameters include SAC shape, hole diameter, hole length and spray angle. Hereon, the nozzle coefficient＇ s influence on the injection characteristics of fuel supply system, the performance and emission of diesel engine were revealed. Research results show that the nozzle structural parameters should be determined reasonably to make the coefficient the greatest.

关 键 词：喷油嘴 流量系数 喷射特性 

分 类 号：TK423.8[动力工程及工程热物理—动力机械及工程]