直喷增压汽油发动机曲轴箱通风系统的研究  

Research on Optimization of Crankcase Ventilation System in TGDI Engine

作　　者：冀晓栋[1,2] 左云[1,2] 李佳[1,2] 李红梅[1,2] 王鹏[1,2] 周武明[1,2] 

机构地区：[1]长城汽车股份有限公司技术中心,河北保定071000 [2]河北省汽车工程技术研究中心

出　　处：《小型内燃机与摩托车》2014年第4期14-17,共4页Small Internal Combustion Engine and Motorcycle

摘　　要：为满足直喷增压汽油发动机的曲轴箱通风系统的开发需求,借助现代CAE软件分析能力,通过降低活塞漏气量,优化回油结构,优化取气口位置及面积,合理匹配油气分离器压损和有效回油高度,通过多轮试验验证,找出最优设计方案。In order to satisfy the development requirements of crankcase ventilation system in TGDI engine, with the aid of modern CAE analysis, the optimal design is fixed through many test verifications by reducing piston blow-by, optimizing oil drain structure, air inlet position and area, and balancing the oil separator pressure loss and valid oil drain height.

关 键 词：活塞漏气量 油气分离 分离器压损 

分 类 号：TK411[动力工程及工程热物理—动力机械及工程]