Study and Improvement on Sound Quality of Car’s Interior Noise

doi:10.3969/j.issn.1006-1355-2011.05.011

›› 2011, Vol. 31 ›› Issue (5): 45-48.DOI: 10.3969/j.issn.1006-1355-2011.05.011

• 3.运载工具振动与噪声 • Previous Articles Next Articles

Study and Improvement on Sound Quality of Car’s Interior Noise

（ 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 ）

Received:1900-01-01 Revised:1900-01-01 Online:2011-10-18 Published:2011-10-18

轿车车内噪声声品质改进研究

刘志恩1,2，赵楠楠1,2，侯献军1,2，袁守利1,2

（ 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 ）

通讯作者: 刘志恩

Abstract

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.

Key words: acoustics, interior noise, sound quality, resonator muffler

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。

关键词: 声学, 车内噪声, 声品质, 共振消声器

CLC Number:

TB533+.2

LIU Zhi-en;;ZHAO Nan-nan;;HOU Xian-jun;;YUAN Shou-li;. Study and Improvement on Sound Quality of Car’s Interior Noise[J]. , 2011, 31(5): 45-48.

刘志恩;赵楠楠;侯献军;袁守利;. 轿车车内噪声声品质改进研究[J]. , 2011, 31(5): 45-48.

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Study and Improvement on Sound Quality of Car’s Interior Noise

轿车车内噪声声品质改进研究

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