四气门柴油机进气道性能的试验研究  

An Experimental Study on Intake-ports Characteristics of a Four-valve Diesel Engine

作　　者：吴志军[1] 孙济美[2] 黄震[1] 

机构地区：[1]上海交通大学动力与能源工程学院 [2]吉林大学汽车工程学院内燃机系

出　　处：《农业机械学报》2001年第2期1-4,共4页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家"攀登计划"(A)资助!项目 (项目编号 :85 0 6 13)

摘　　要：利用所研制的单独进气道和四气门柴油机试验缸盖系统 ,研究了进气道的不同形状组合、两进气道布置的相对位置对四气门柴油机进气道性能的影响。气道布置角度的变化对流量系数影响不大 ,但对无因次涡流有很大影响。单气道工作方式下 ,这种影响取决于气道型式 ,对切向气道的影响较螺旋气道大 ;两组合气道工作方式下 ,这种影响取决于气道形状的不同组合及两气道之间的相对位置 ,两个螺旋气道组合时影响最大。With an experimental cylinder head and a single port of a four-valve diesel engine, an experimental study on the stationary flow test bench was carried out. The influence of intake-ports combination and layout on intake-port flow characteristics was explored in four-valve diesel engine. The change of port layout angle has little effect on the flow coefficient while playing an important role in the non-dimensional swirl. In single-port operation, the port type decides the influence, which is stronger in directional port than that in helical port. In two-port operation, the various combination of port type and relative position of two-port decide the influence, which is strongest under the combination of two helical ports.

关 键 词：柴油机 气门 进气道 试验研究 性能 

分 类 号：TK421.3[动力工程及工程热物理—动力机械及工程] TK423.43