排气歧管的高温问题分析及结构改进  

Analysis and Structure Improvement of High Temperature of Exhaust Manifold

作　　者：叶彦辰[1] 崔好选[1,2] 张喜亮[1,2] 武春霞[2] 刘涛[2] 江帅[1] 

机构地区：[1]河北工程大学装备制造学院大学生工程装备设计所,河北邯郸056038 [2]河北工程大学装备制造学院,河北邯郸056038

出　　处：《广东化工》2015年第18期217-219,共3页Guangdong Chemical Industry

摘　　要：针对赛车排气歧管内烟气排气不畅引起局部高温,危害车手人身安全的问题。在分析导致原有排气歧管产生高温的因素的基础上,对其结构进行了改进,研究内容如下:(1)采用数值模拟对排气歧管进行流场、温度场、振动及热应力分析;(2)以歧管的结构参数(管径、曲率半径、管长、路径等)为变量,对排气歧管结构进行数值模拟及优化;(3)加工制作了优化的歧管,并进行实际使用。赛车试用结果表明:歧管排气顺畅,未发生局部高温,性能稳定。Aiming at the problem of the high temperature and the safety of the gas in the exhaust manifold of the car exhaust gas, the problem of the safety of the drivers is harmful. Based on the analysis of the factors that lead to the high temperature of the exhaust manifold, the structure is improved. The main work is as follows： （ 1）The flow field, temperature field, vibration and thermal stress analysis of the exhaust manifold are analyzed. （2）The structure of the exhaust manifold is simulated numerically. （3）Test results show that： the manifold exhaust is smooth, no local high temperature, stable performance.

关 键 词：歧管 局部高温 数值模拟 

分 类 号：TQ[化学工程]