噪声与振动控制Issue(4)：85-88,4.DOI:10.3969/j.issn.1006-1335.2015.04.019
某非承载式SUV车内噪声问题的分析
Interior Noise Analysis of a Non-load Type Body SUV
李玲 1田率 2康菲 1张栋 2王文彬1
作者信息
- 1. 长城汽车股份有限公司 技术中心，河北 保定 071000
- 2. 河北省汽车工程技术研究中心，河北 保定 071000
- 折叠
摘要
Abstract
The interior low frequency booming noise of vehicles can seriously deteriorate ride comfort. In this paper, the booming noise of a non-load type body SUV at 1700 r/min engine rotation rate in acceleration condition was studied. Through the order analysis, torsional vibration analysis of the powertrain, transfer function analysis and cavity modes analysis, it was found that the interior booming noise is caused by the torque fluctuation of order 2 from the engine. The torsional fluctuation is transmitted through the rear axle to the inside of the vehicle and amplified. Then, it is coupled with the cavity modes so that the loud booming noise occurs. By installing an additive torsional vibration damper, the torsional vibration was efficiently reduced. The test result shows that the vehicle interior booming noise is reduced by 7.5 dB(A), which is acceptable for subjective evaluation. This work provides a reference for seeking and solving the low-frequency booming noise problems.关键词
声学/轰鸣声/阶次分析/扭转减振器/空腔模态Key words
acoustics/booming noise/order analysis/torsional vibration damper/cavity modes分类
数理科学引用本文复制引用
李玲,田率,康菲,张栋,王文彬..某非承载式SUV车内噪声问题的分析[J].噪声与振动控制,2015,(4):85-88,4.
