基于排气消声器背压与噪声匹配设计研究  

Study On Exhaust System Vibration Design Based On Modal Analysis

作　　者：左炜晨 胡光辉 张利 丁吉民 Zuo Weichen;Hu Guanghui;Zhang Li;Ding Jimin(Echnological Center, Anhui Jianghuai Automobile Co., Ltd, Anhui Hefei 230601)

机构地区：[1]安徽江淮汽车集团股份有限公司技术中心,安徽合肥230601

出　　处：《汽车实用技术》2017年第20期51-52,共2页Automobile Applied Technology

摘　　要：文章针对某款车型在设计阶段的排气系统噪声与背压及结构设计研究,主要是对噪声与背压及结构匹配优化设计;首先利用GT-power建立排气消声元件模型,分析消声器消声能力;在利用STAR-CCM+软件进行排气系统背压分析,通过背压与噪声消声能力对比研究,选择满足背压要求的最优排气系统消声器方案,来做为设计冻结的消声器方案;同时也能够研究排气系统背压和消声器结构对排气噪声的影响。In this paper a model of noise and back pressure and structure design of exhaust system in the design stage,mainly,the optimization design of the noise and the back pressure and structure;first established by GT-power exhaust mufflerelement model,analysis ability;analysis of back pressure in the exhaust system by using STAR-CCM+software,through thecomparison of the back pressure and noise elimination ability select the optimal scheme,meet the muffler exhaust systembackpressure requirements,to design the muffler of freezing;also can influence on the exhaust system backpressure andmuffler structure of exhaust noise.

关 键 词：排气系统 消声能力 背压 结构 

分 类 号：U462.1[机械工程—车辆工程]