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굴삭기 냉각팬 성능해석 및 슈라우드 특성에 대한 실험적 연구
이재석(Jae-Seok Lee),정경남(Kyung-Nam Chung),김진영(Jin-Young Kim),이태경(Tae-Kyung Lee),강정원(Jeong-Won Kang),심재구(Jae-Koo Shim),손득균(Deuk-Kyun Son) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
In this paper, the performance analysis is experimentally carried out in order to select the best cooling fan and shroud considering both cooling performance and noise reduction. 4 cooling fans have been tested in the fan tester and the real excavator. In order to obtain the performance of the cooling fans, flow capacity has been estimated by measuring flow velocity using a hot wire anemometer, and noise radiation has been also measured to estimate the fan noise. Characteristics of a box-type and a streamlined shroud have been examined by changing the immersion depth of cooling fans. Based upon the results, the best cooling fan is selected. Finally, the criterion to select the best cooling fan has been set up.
고경은(Ko, Kyung-Eun),김영현(Kim, Young-Hyun),주원호(Joo, Won-Ho),김동해(Kim, Dong-Hae),배종국(Bae, Jong-Gug),심재구(Shim, Tae-Koo),강정원(Kang, Jeong-Weon),손득균(Son, Deuk-Kyun),김춘오(Kim, Choon-O) 한국소음진동공학회 2006 한국소음진동공학회 논문집 Vol.16 No.12
The radiated noise of the excavator is composed of the various noise sources such as the diesel engine, cooling fan and hydraulic system, so the noise reduction for each noise source is required. In this study, the source contribution analysis for these principal noise sources is performed by using the noise source removal method. And to reduce the noise due to each one, the various experiments and analyses are studied. On the basis of these results, the proper noise reduction countermeasures are derived to develop the excavator satisfied the $2^{nd}$ noise regulation of EU.