| 发动机工作过程和消声器特性耦合的建模与设计 |
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| 引用本文： | 杨润潮,颜伏伍,刘志恩. 发动机工作过程和消声器特性耦合的建模与设计[J]. 噪声与振动控制, 2011, 31(4): 155-159. DOI: 10.3969/j.issn.1006-1355-2011.04.037 |
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| 作者姓名： | 杨润潮 颜伏伍 刘志恩 |
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| 作者单位： | ( 1. 武汉理工大学， 武汉 430070 ； 2. 现代汽车零部件技术湖北省重点实验室 ， 武汉 430070 ) |
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| 基金项目： | 国家“863”计划项目 |
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| 摘 要： | 在分析B12发动机排气频谱的基础上进行某微型车排气消声器设计。利用GT - Power软件建立排气消声器和发动机的耦合仿真模型，对消声器声学性能和空气动力学性能进行仿真计算，并进行实验验证。改进设计后消声器的插入损失可达到25 dB，尾管噪声控制在95 dB左右，背压在设计要求范围（34 ± 2 kPa）内，顺利完成设计目标。对比模拟和实验结果显示了GT - Power软件具有良好的预测性能。
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| 关 键 词： | 声学 噪声 发动机 消声器 GT - Power |
| 收稿时间： | 2010-06-07 |
| 修稿时间： | 2010-11-23 |
Study on Coupling Design of Engine Muffler |
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| YANG Run-chao,YAN Fu-wu,LIU Zhi-en. Study on Coupling Design of Engine Muffler[J]. Noise and Vibration Control, 2011, 31(4): 155-159. DOI: 10.3969/j.issn.1006-1355-2011.04.037 |
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| Authors: | YANG Run-chao YAN Fu-wu LIU Zhi-en |
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| Affiliation: | ( 1 Wuhan University of Technology; Wuhan 430070， China ;2 Hubei Key Laboratory of Advanced Technology of Automotive Parts, Wuhan 430070 , China ) |
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| Abstract: | The exhaust muffler of a minibus is designed on the basis of analyzing the exhaust spectrum of B 12 engine.An engine-muffler coupled model is built using GT-Power software.Computational simulation and experimental verifica-tion of acoustic and aerodynamic performance of the muffler are presented.The result shows that the insert loss of the muf-fler can reach 25dB,the tail noise is about 95dB,and the backpressure is in 34±2 kPa of the allowable range.Hence,the goal of design of the muffler is successfully reached.It is shown by mutual comparison between the simulation and test re-sults that GT-Power software has a good performance for prediction of the acoustic and aerodynamic behavior of the muffler. |
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| Keywords: | acoustics noise auto engine muffler GT-Power |
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