| 汽车排气系统悬挂点影响车内噪声的研究 |
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| 引用本文： | 姚运仕,马芳武,冯忠绪,赵福全,李刚,袁连太,王海林,刘强.汽车排气系统悬挂点影响车内噪声的研究[J].郑州大学学报(工学版),2011(4). |
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| 作者姓名： | 姚运仕 马芳武 冯忠绪 赵福全 李刚 袁连太 王海林 刘强 |
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| 作者单位： | 长安大学道路施工技术与装备教育部重点实验室;浙江吉利汽车研究院有限公司; |
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| 基金项目： | 国家高技术研究发展计划(“863”计划)资助项目(AA11A122); 中国博士后科学基金面上资助项目(20100471591) |
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| 摘 要： | 汽车排气系统对车内噪声有重要影响,针对车内噪声控制问题,采用试验和仿真相结合的方法,对实车进行了多工况测试,对排气系统进行了模态仿真分析.实车测试结果表明,通过排气系统悬挂点传播的振动噪声是引起车内噪声的重要因素,排气系统模态仿真结果表明,原悬挂点偏离模态节点需进行优化.对悬挂点优化后的排气系统进行了验证试验,结果表明:排气系统悬挂点优化后,车内噪声有明显降低,平均降噪2.5 dB(A),后排降噪量达5 dB(A),研究成果可以指导工程应用.
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| 关 键 词： | 汽车工程 排气系统 噪声 模态 |
Influence of Exhaust Hanger Locations on Vehicle Interior Noise Level |
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| YAO Yun-shi,MA Fang-wu,FENG Zhong-xu,ZHAO Fu-quan,LI Gang,YUAN Lian-tai,WANG Hai-lin,LIU Qiang.Influence of Exhaust Hanger Locations on Vehicle Interior Noise Level[J].Journal of Zhengzhou University: Eng Sci,2011(4). |
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| Authors: | YAO Yun-shi MA Fang-wu FENG Zhong-xu ZHAO Fu-quan LI Gang YUAN Lian-tai WANG Hai-lin LIU Qiang |
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| Affiliation: | YAO Yun-shi1,2,MA Fang-wu2,FENG Zhong-xu1,ZHAO Fu-quan2,LI Gang2,YUAN Lian-tai2,WANG Hai-lin2,LIU Qiang2(1.Key Laboratory for Highway Construction Technology and Equipment of Ministry of Education,Chang'an University,Xi'an 710064,China,2.Zhejiang Geely Automobile Institute Co.,Ltd,Hangzhou 311228,China) |
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| Abstract: | Exhaust system is one of factors that affect vehicle interior noise.In order to reduce the noise level,tests were carried on the prototype and exhaust modes were simulated.The results show that exhaust hanger is major factor on vehicle interior noise.The exhaust hanger,mounting locations,should be optimized according to the system analysis on the vibration nodes.After the optimization of exhaust hanger,the vehicle interior noise level has been cut down with 2.5 dB(A) average and 5 dB(A) in rear seats. |
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| Keywords: | automotive engineering exhaust system noise mode |
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