噪声与振动控制2011，Vol.31Issue(5)：45-48,70,5.DOI:10.3969/j.issn.1006-1355-2011.05.011
轿车车内噪声声品质改进研究
Study and Improvement on Sound Quality of Car' s Interior Noise
摘要
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.关键词
声学/车内噪声/声品质/共振消声器Key words
acoustics / interior noise / sound quality / resonator muffler分类
通用工业技术引用本文复制引用
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):45-48,70,5.基金项目
中央高校基本科研业务费专项资金资助(2010-IV-073) （2010-IV-073）
