• Title/Summary/Keyword: Gear noise

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Idling Performances of Reduction Gear Unit for Bimodal Tram (바이모달 트램용 감속기어장치의 무부하 성능평가)

  • Kim, Y.S.;Mok, J.K.;Chang, S.K.;Hong, Y.K.;Kim, Y.K.;Kim, J.W.;Kim, T.H.
    • Proceedings of the KSR Conference
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    • 2008.11b
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    • pp.584-589
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    • 2008

  • A bi-modal tram has been developing to consist of articulated-two cars propelled by CNG hybrid (series type) in Korea since 2003. All wheels are driven by electrical motors independently, which can eliminate differential gears to reduce turning radius and make low floor to provide the old and the handicapped with easy access. In the bi-modal tram, therefore, reduction gear unit is key technology to make low floor and drive wheels independently. This study was aimed at performance evaluations of the reduction gear unit for the bi-modal tram. Oil leakage, oil temperature, vibration, acoustic noise in idle operations were measured for the reduction gear unit of the bimodal tram.

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Case Study on Bearing Electric Arcing (베어링 Electric Arcing 예지사례)

  • Chun, Yong-Sang
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2007.11a
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    • pp.1076-1077
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    • 2007

  • CMS(Condition Monitoring System) is a useful tool to predict the defect of machine condition, for example, Motor, Bearing, Gear, Fan, etc. And, recently CMS is very important on plant. In this paper, describe the bearing electric arcing with example.

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