四气门汽油机工作过程的瞬态模拟计算  

Transient Simulation of Working Process for Four-valve Gasoline Engine

作　　者：杜爱民[1] 吴杰杰[1] 段亮[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）》2010年第7期1074-1078,共5页Journal of Tongji University:Natural Science

摘　　要：利用AVL-Fire软件,建立某汽油机的气道及缸内流动区域在进气、压缩和做功行程的动态网格,并在此基础上模拟计算三维数值,分析不同行程气道及缸内气体速度、湍流动能、温度和压力的分布情况,获得更详细的流场信息,为该汽油机的设计提供相关理论依据和参考.Software AVL-Fire was used to create the dynamic meshes of intake port and cylinder flow area of gasoline engine,in the strokes of intake,compression and expansion.The three-dimensional numerical simulation calculation was processed,and through the analysis of the distribution of air velocity,turbulent kinetic energy,temperature and pressure under different valve strokes,a more detailed flow field information was obtained,which provides a theoretical basis and reference to the design of the gasoline engine.

关 键 词：汽油机 瞬态模拟 动网格 

分 类 号：U270.2[机械工程—车辆工程]