| 轿车车内噪声声品质改进研究 |
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| 引用本文： | 刘志恩,赵楠楠,侯献军,袁守. 轿车车内噪声声品质改进研究[J]. 噪声与振动控制, 2011, 31(5): 45-48. DOI: 10.3969/j.issn.1006-1355-2011.05.011 |
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| 作者姓名： | 刘志恩 赵楠楠 侯献军 袁守 |
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| 作者单位： | （ 1．武汉理工大学 汽车工程学院， 湖北 武汉 430070；2．现代汽车 零部件技术湖北省重点实验室， 湖北 武汉 430070 ） |
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| 基金项目： | 中央高校基本科研业务费专项资金资助(2010-IV-073) |
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| 摘 要： | 针对某轿车在怠速、急加速过程中车内出现异响的现象，通过尾管噪声测试和模态测试，判断其排气二阶噪声及怠速共振噪声是主要原因。采用共振消声结构，降低二阶低频及共振噪声成分，采用芦弗管结构，降低高频气流再生噪声成分，并使用GT-Power软件对发动机加速瞬态尾管噪声进行模拟，实现消声器结构的改进。试验结果表明，改进后的消声器，在车辆启动和急加速时瞬时尾管噪声最大值降低明显，达到主观评价要求。
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| 关 键 词： | 声学 车内噪声 声品质 共振消声器 |
Study and Improvement on Sound Quality of Car' s Interior Noise |
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| LIU Zhi-en,ZHAO Nan-nan,HOU Xian-jun,YUAN Shou-li. Study and Improvement on Sound Quality of Car' s Interior Noise[J]. Noise and Vibration Control, 2011, 31(5): 45-48. DOI: 10.3969/j.issn.1006-1355-2011.05.011 |
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| Authors: | LIU Zhi-en ZHAO Nan-nan HOU Xian-jun YUAN Shou-li |
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| Affiliation: | （ 1. School of Automotive Engineering, 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: | Aiming at the interior abnormal noise during idling and rapid acceleration of a car, the main noise sources, which are the second order and resonance noises, are identified by the tailpipe noise measurement and modal test respectively. A resonant chamber is designed to lower the sound level of the second order and resonant frequencies. A pinch-can structure is used to reduce the high frequency flow noise. And the tailpipe noise at transient accelerating is simulated by GT-Power software. The test results show that the maximum values of transient tailpipe noises at idling and rapid acceleration can be reduced by 11.7 dB(A) and 8 dB(A) respectively. |
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| Keywords: | acoustics interior noise sound quality resonator muffler |
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