四气门汽油机进气道流动特性的CFD分析  

CFD Analysis of Intake Port Flow Characteristics for Four-valve Gasoline Engine

作　　者：杜爱民[1] 段亮[1] 田永祥[1] 

机构地区：[1]同济大学汽车学院,上海201804

出　　处：《同济大学学报（自然科学版）》2009年第2期249-252,共4页Journal of Tongji University:Natural Science

摘　　要：为提高某四气门汽油机的进气道性能,利用三维流体动力学软件AVL-Fire,模拟计算其稳流试验台的三维数值.通过对原气道的分析,发现结构不合理之处,并依据实际要求提出了改进方案,然后对新方案进气道重新模拟分析.结果表明,初步改进后的气道在流通特性上有明显的提高.To improve the performance of the intake port for some practical four-valve gasoline engine, the threedimensional numerical simulation of steady air flows was performed with CFD（Computational Fluid Dynamics） software AVL-Fire. Analysis of the port shows that its figure design is inconsequent and a new design method based upon practical needs was put forward. The improved port proves better in terms of flow Characteristics.

关 键 词：汽油机 进气道 流量系数 滚流 

分 类 号：U270.2[机械工程—车辆工程]