[1]姚运仕,马芳武,冯忠绪,等.冷却风扇“拍振”影响车内噪声的试验研究[J].郑州大学学报(工学版),2013,34(04):40-44.[doi:10.3969/j.issn.1671-6833.2013.04.010]
　YAO Yun-shi,MA Fang-wu,FENG Zhong-xu,et al.Experimental Study on Vehicle Interior Noise with Factors of Cooling Fan Beat Vibration[J].Journal of Zhengzhou University (Engineering Science),2013,34(04):40-44.[doi:10.3969/j.issn.1671-6833.2013.04.010]
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冷却风扇“拍振”影响车内噪声的试验研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
34卷
期数:
2013年04期
页码:
40-44
栏目:
出版日期:
2013-09-09

文章信息/Info

Title:
Experimental Study on Vehicle Interior Noise with Factors of Cooling Fan Beat Vibration
作者:
姚运仕; 马芳武; 冯忠绪; 等.
长安大学道路施工技术与装备教育部重点实验室,陕西西安,710064, 浙江吉利汽车研究院有限公司,浙江杭州,311228, 威海职业学院船舶工程系,山东威海,264210
Author(s):
YAO Yun-shi1; MA Fang-wu2; FENG Zhong-xu1; cUO Zi-yu3
1.Key Laboratory for Highway Construction Technology and Equipment of Ministry of Education ， Chang’an University ，Xi’ an710064, China; 2.Zhejiang Ceely Automobile Institute Co. Ld，Hangzhou 311228,China; 3. Department of Ship Engineering,Weihai Vocational College，Weihai 264210，China
关键词:
汽车工程;  冷却风扇;  拍振;  噪声;  舒适性
Keywords:
automotive engineering;  cooling fan ;  beat vibration;  noise;  comfort
分类号:
U461 TH12
DOI:
10.3969/j.issn.1671-6833.2013.04.010
摘要:
为了降低冷却风扇对车内噪声的影响,采用理论分析与实车试验相结合的方法,在分析“拍振”机理的基础上讨论了双冷却风扇“拍振”形成的原因;以某B级车车内噪声为研究对象,进行了双冷却风扇优化前后的对比试验.研究结果表明:当转速差较小时,双冷却风扇因各自动不平衡引起的两个振动会合成“拍振”,影响车辆舒适性;实测车内噪声含明显的冷却风扇噪声成分,且“拍振”现象明显;通过调整两冷却风扇转速差到20％和减小动不平衡量10％,发动机怠速、冷却风扇高速运转时车内噪声由优化前48.32dB (A)降低至46.86 dB(A),降噪效果明显.
Abstract:
In order to reduce interior noise caused by cooling fan,mechanism of beat vibration of double cool-ing fans was discussed with help of theoretical analysis and field test. The comparison tests of prototype werecarried on direct to the double cooling fans with and without optimizations. It was pointed that beat vibrationwas caused by double cooling fans with unbalance mass and little dfference in rotating speed,which affectedthe comfort of the vehicle.The interior noise has close relationship with noise of cooling fan and beat vibrationof noise was obvious.The interior noise of idle with high speed of cooling fans decreased from 48.32dB(A)without optimizations to 46.86 dB( A) with optimizations by adjusting the rotating speed difference of thedouble cooling fans to 20%and cutting unbalance mass by 10% .

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更新日期/Last Update: 1900-01-01