噪声与振动控制2017，Vol.37Issue(5)：124-127,203,5.DOI:10.3969/j.issn.1006-1355.2017.05.026
自动挡车型Creep Groan噪声传递路径分析与优化
Analysis and Optimization of Creep Groan Noise Transfer Path for AT Vehicles
摘要
Abstract
Creep groan noise is a kind of low frequency noises with the frequency below 1000 Hz, which will be generated very easily when the driver of an automatic car is releasing the brake slowly to start with D block or R block, or giving the brake slowly to stop. Recently, most of the creep groan noise is eliminated by changing the friction material of brake shoes. Nevertheless, it is rare to find the work of reducing the creep groan noise by analyzing and improving the transfer path of the noise. In this paper, through the coherence, ODS and NTF analyses, it is found that the main transfer path of the creep groan noise is in the front suspension system of the vehicle. And the key component is the top mount of the shock absorber of the front suspension system. By lowering the hardness of the top mount, the creep groan noise is reduced obviously and the subjective driving assessment is acceptable.关键词
声学/CreepGroan噪声/ODS/相干性/Topmount/NTF/减震器Key words
acoustics/creep groan noise/ODS/coherence/top mount/NTF/shock absorber分类
通用工业技术引用本文复制引用
徐宜敏,段龙杨,翁建生,吴赵生,王轮..自动挡车型Creep Groan噪声传递路径分析与优化[J].噪声与振动控制,2017,37(5):124-127,203,5.基金项目
江西省教育厅科学技术研究资助项目(GJJ151157) （GJJ151157）
