四气门柴油机进气道布置的试验研究  

Experimental Study on Intake-Port Layout in Four-Valve Diesel Engine

作　　者：吴志军[1] 黄震[1] 孙济美[2] 

机构地区：[1]上海交通大学动力与能源工程学院,上海200030 [2]吉林大学汽车工程学院,长春130025

出　　处：《上海交通大学学报》2002年第2期230-233,共4页Journal of Shanghai Jiaotong University

基　　金：国家"攀登计划"( A)资助项目 ( 85 -0 6 -1-3)

摘　　要：为获得具有优良的流通特性和涡流特性的四气门柴油机进气道系统 ,在稳流气道试验台上 ,研究了进气道的布置对四气门柴油机进气道流动特性的影响 .结果表明 ,气道布置角度的变化对流量系数影响不大 ,但对涡流比有较大影响 ;切向、螺旋气道布置角度的变化对组合涡流的影响分别表现在小升程范围和中、大升程范围 ,前者比后者有更大的影响 ;组合气道涡流较单独气道开启时有较大降低 。In order to obtain a better performance of intake ports in four valve diesel engine, an experimental study on the stationary flow test bench was carried out. The results shows: ① The change of port layout angle has little effect on the flow coefficient while playing an important role on the swirl ratio; ② The change of directional port layout angle leads to great changes on the low valve lift. ③ The change of helical port layout angle has great effects on the medium and high valve lift; ④ The swirl of two port decreases greatly than that of single port. Helical port is influenced greater than directional port.

关 键 词：四气门柴油机 进气道布置 流动特性 稳流试验 

分 类 号：TK421.3[动力工程及工程热物理—动力机械及工程]