噪声与振动控制Issue(1)：129-132,4.DOI:10.3969/j.issn.1006-1335.2016.01.028
冷却风扇非整数倍阶次噪声问题的试验诊断分析
Test and Analysis of Cooling Fans’Non-integer Order Noises
郑军 1王弘岩 1关帅 1姜雯 1蒋秀文 1杨安志2
作者信息
- 1. 清华大学 苏州汽车研究院 相城，江苏 苏州 215134
- 2. 苏州盖斯特汽车技术有限责任公司，江苏 苏州 215134
- 折叠
摘要
Abstract
When automotive engine’s cool fans (double fans, 6 blades for each) in operation, about the 5.3th order noise peak of the rotation fundamental frequency appears. In order to find the reason of this abnormal noise, the factors such as the excitation source of the cooling fans, main transfer path etc., were comprehensively analyzed. By means of experiments, the noise was diagnosed and analyzed carefully. It is confirmed that the noise cause is the vortical noise and the distance between the fan and the radiator has a strong influence on the noise. By adjusting the distance, contribution of the vertical noise to the interior noise can be reduced.关键词
声学/非整数倍阶次/涡流噪声/冷却风扇Key words
acoustics/non-integer order/vortical noise/cooling fan分类
数理科学引用本文复制引用
郑军,王弘岩,关帅,姜雯,蒋秀文,杨安志..冷却风扇非整数倍阶次噪声问题的试验诊断分析[J].噪声与振动控制,2016,(1):129-132,4.
