Experimental Study on Vehicle Interior Noise with Factors of Cooling Fan Beat Vibration
[1]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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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
34
Number of periods:
2013 04
Page number:
40-44
Column:
Public date:
2013-09-09
- Title:
- Experimental Study on Vehicle Interior Noise with Factors of Cooling Fan Beat Vibration
- Keywords:
- automotive engineering; cooling fan ; beat vibration; noise; comfort
- CLC:
- U461 TH12
- 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% .
- References:
- -
- Similar References:
Memo
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Last Update:
1900-01-01
