文章摘要
赵东,高小新,杨亮,褚志刚,郑飞.汽车排气消声器性能分析及改进[J].声学技术,2018,37(3):272~276
汽车排气消声器性能分析及改进
Performance analysis and improvement of automotive exhaust muffler
投稿时间:2017-07-10  修订日期:2017-08-30
DOI:10.16300/j.cnki.1000-3630.2018.03.014
中文关键词: 消声器  插入损失  压力损失
英文关键词: muffler  insertion loss  pressure loss
基金项目:重庆市重大应用开发计划项目(cstc2015yykfc60003)、汽车噪声振动和安全技术国家重点实验室开放基金资助项目(NVHSKL-201504)。
作者单位E-mail
赵东 重庆大学汽车工程学院, 重庆 400044  
高小新 中国航发湖南动力机械研究所, 湖南株洲 412000  
杨亮 长安汽车工程研究院, 重庆 400044  
褚志刚 重庆大学汽车工程学院, 重庆 400044 zgchu@cqu.edu.cn 
郑飞 重庆大学汽车工程学院, 重庆 400044  
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中文摘要:
      针对某汽车排气消声器插入损失不达标的问题,利用GT-Power软件建立了发动机与进排气系统耦合的仿真模型,对排气消声器的声学性能和空气动力性能进行数值计算,分析了发动机转速1 000~2 500(r·min-1)范围内的插入损失和压力损失。根据分析结果,基于试验设计(Design of Experiment,DOE)方法,对消声器结构进行多工况、多参数、多目标优化。优化结果表明,改进后的消声器的插入损失有了明显提升,空气动力性能良好,其综合性能得到显著提升。
英文摘要:
      Aiming at the problem that the insertion loss of an automobile exhaust muffler has not been up to standard, a coupling simulation model of coupling between the engine and the intake and exhaust system is established by GT-Power software. The acoustic performance and aerodynamic performance of the exhaust muffler are calculated numerically. The insertion loss and pressure loss are analyzed at an engine speed range between 1 000 and 2 500 rpm. According to the analysis results, a multi-condition, multi-parameter and multi-objective optimization is conducted to the muffler structure based on the DOE (Design of Experiment) method. The optimization results indicate that the insertion loss of the optimized muffler is obviously promoted, the aerodynamic performance is satisfactory, and its comprehensive performance is significantly improved.
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