Test and Analysis of Cooling Fans’ Non-integer Order Noises

doi:10.3969/j.issn.1006-1335.2016.01.028

›› 2016, Vol. 36 ›› Issue (1): 129-132.DOI: 10.3969/j.issn.1006-1335.2016.01.028

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Test and Analysis of Cooling Fans’ Non-integer Order Noises

Received:2015-05-28 Revised:2015-08-17 Online:2016-02-18 Published:2016-02-18

冷却风扇非整数倍阶次噪声问题的试验诊断分析

郑军1，王弘岩1，关帅1，姜雯1，蒋秀文1，杨安志2

（ 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 ）

通讯作者: 郑军

Abstract

摘要：

汽车发动机冷却风扇工作时，室内噪声出现冷却风扇轴旋转基频的5.3阶左右噪声峰值（双风扇，叶片数均为6片），为明确该异常噪声源产生的具体原因，综合分析冷却风扇激励源、主要传递路径等因素,利用实验手段对噪声进行详细诊断分析，确认引起噪声的原因是风扇涡流噪声。风扇与散热器之间的距离对其有较大影响，通过风扇与散热器之间的距离优化，降低此噪声对室内噪声的贡献。

关键词: 声学, 非整数倍阶次, 涡流噪声, 冷却风扇

CLC Number:

O422.6

郑军1，王弘岩1，关帅1，姜雯1，蒋秀文1，杨安志2. 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, 36(1): 129-132.

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Test and Analysis of Cooling Fans’ Non-integer Order Noises

冷却风扇非整数倍阶次噪声问题的试验诊断分析

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