车用催化转化器内部空腔容积的结构优化  

Structural optimization of installed cavity of the catalytic converter in automotive

作　　者：余秋兰[1] 王勤[1] 黄华[1] 

机构地区：[1]武汉工程职业技术学院,湖北武汉430080

出　　处：《机械》2009年第9期20-22,共3页Machinery

摘　　要：采用催化转化技术是一种合理有效的降低摩托车尾气排放的方法,而催化器内部结构影响催化效果。目前,研究较多的是催化转换器的扩张角度。利用Gambit前处理软件对催化器进行建模,利用FLUENT软件分析了不同安装空腔长度下催化器内部流场分布情况,根据速度分布情况及实际情况,合理选择空腔长度,即空腔取20mm净化效果最佳。It is an effective and reasonable method to install catalytic converter to reduce the emission of automotive and the inner frame of the catalytic converter will affect the result directly. Much research was based on the angle of the catalytic. This article used the software GAMBIT to modeling the converter, then it used the software FLUENT to analyze the inner flowing instance when the installed cavity was at different length. According to the distributing of the velocity and reality, the reasonable installed length that was 20 mm was confirmed, and the emission was better purified.

关 键 词：催化转化 数值模拟 FLUENT 

分 类 号：U483[交通运输工程—载运工具运用工程]