某汽油发动机排气歧管的CFD仿真分析  

The CFD Simulation Analysis on a Gasoline Engine Exhaust Manifold

作　　者：邱若友[1] 张应兵[1] 田国庆[1] 张超[1] 陈友祥[1] 

机构地区：[1]安徽江淮汽车股份有限公司技术中心,安徽合肥230601

出　　处：《内燃机》2015年第3期53-55,共3页Internal Combustion Engines

摘　　要：使用FAME生成以六面体为主的计算网格,然后CFD通过软件计算额定工况点的排气歧管内部的气体流动情况。通过计算得出,排气歧管四个支管段压力损失较大。新方案支管压力和排气歧管总压力均满足要求,且各缸之间不会相互窜气。In this paper, we use the FAME to generate computational mesh, through the CFD software, to calculate the gas flow rated operating inside the exhaust manifold. Through the calculation, there has high pressure loss in four pipes of the exhaust manifold. A new scheme of branch pipe pressure and total pressure of the exhaust manifold satisfies the requirements of each cylinder, and can not be mutually gas channeling.

关 键 词：CFD 排气歧管 压力 窜气 

分 类 号：TK412[动力工程及工程热物理—动力机械及工程]