基于CATIA的柴油机缸内气体流动研究  

Research on In-cylinder Flow of Diesel Engine with CATIA

作　　者：娄宗勇[1] 谢宇 宋松松[1] 候存满[1] 

机构地区：[1]承德石油高等专科学校汽车工程系,067000 [2]上海通用(沈阳)北盛汽车有限公司

出　　处：《车辆与动力技术》2009年第4期33-36,共4页Vehicle & Power Technology

摘　　要：利用CATIA软件建立WD615.67A柴油机的气道-气门-气缸的三维几何模型,应用所建立的模型研究了在发动机气门最大升程时,缸内流场的变化规律.柴油机在气门开启后,在气门底部存在一个低压区域,形成了局部滚流.在离气门比较近的区域压力分布极不均匀;但是在气缸中压力分布基本稳定.The intake passage-valve-cylinder three-dimensional model of the WD615.67A diesel engine is built by means of CATIA. The influence of flow field in the biggest valve lift is analyzed. After its lifting, a low pressure area exists in the bottom of the intake valve, a local tumble forming. The pressure distribution closed to the intake valve is extremely non-uniform, but in the cylinder basically stable.

关 键 词：三维几何模型 气门升程 流场 

分 类 号：U262.11[机械工程—车辆工程]