噪声与振动控制2019，Vol.39Issue(2)：114-117,4.DOI:10.3969/j.issn.1006-1355.2019.02.022
电动车制动真空泵对车内噪声影响机制分析
Mechanisms of Interior Noise caused by Brake Vacuum Pumps of Electric Vehicles
廉晶晶 1张杰 1杨柳青 1叶常景 1代炜 1张晨曦2
作者信息
- 1. 国家汽车质量监督检验中心(襄阳),湖北 襄阳 441004
- 2. 国家汽车质量监督检验中心(襄阳),湖北 襄阳 441004
- 折叠
摘要
Abstract
The mechanism of interior noise in an electric car is studied. Using subjective evaluation and troubleshooting, the brake vacuum pump is confirmed to be the reason of the interior noise. Then, based on the vibration and noise source identification, transfer path analysis and response analysis and using the modal simulation results, the mechanisms of the interior noise is analyzed. To reduce air radiation noise, the method of wrapping the vacuum pump with damping material is proposed. To reduce the structural radiation noise, the method of increasing the stiffness of the mounting bracket is presented. Test results show that the proposed methods are reasonable and the interior noise can be reduced by nearly 6 dB.关键词
声学/电动汽车/真空泵/制动/车内噪声/模态分析Key words
acoustics/ electric vehicle/ vacuum pump/ brake system/ interior noise/ modal analysis分类
交通工程引用本文复制引用
廉晶晶,张杰,杨柳青,叶常景,代炜,张晨曦..电动车制动真空泵对车内噪声影响机制分析[J].噪声与振动控制,2019,39(2):114-117,4.
