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http://dx.doi.org/10.5050/KSNVN.2003.13.4.258

A Study on the Noise Reduction of the Engine Cooing Fan of a Express Bus by Modification of Design Parameters  

이유엽 (한양대학교 자동차공학과)
조용구 (한양대학교 대학원 자동차공학과)
이충휘 (한양대학교 대학원 자동차공학과)
오재응 (한양대학교 자동차공학과)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.13, no.4, 2003 , pp. 258-265 More about this Journal
Abstract
This paper suggests the noise reduction method of the engine cooling fan. The fan noise contribution to the OASPL of engine room was estimated and the noise source was identified for the rotating fan by sound intensity method. And the program for Predicting the noise spectrum of axial flow fan was also developed. The radiated acoustic pressure is expressed in terms of discrete frequency noise Peaks at BPF and its harmonics and the line spectrum at the broad band by the proposed noise generation mechanisms. In this Paper, it Is shown that the comparison of the measured and calculated noise spectra of fan validates the noise predicting program. And this paper presents the characteristics of the fan noise in order to modify the design parameters. Accordingly, the design parameters were determined for the noise reduction of the fan.
Keywords
Discrete Frequency Nosie; Broadband Noise; Blade Passage Frequency; Sound Intensity; Taguchi Method; SN Ratio;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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[ 이찬 ] / 한국소음진동공학회논문집   과학기술학회마을
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[ 이상복 ] / 기초부터 현장적용까지 알기 쉬운 다구찌 기법
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[ Wright, S. E. ] / J. of Sourd and Vib.   DOI   ScienceOn
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[ 다구찌 겐이치 ] / 품질 설계를 위한 실험계획법 IV