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Transfer characteristics of vehicle air conditioners’ booming noise

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Abstract

Vehicle air conditioners generate a booming noise when pressure pulsation in the compressor is generated and transmitted to vehicle interiors through the attached pipes and chassis, which constitute a typical noise transfer path between the compressor and the interior. In this study, the transfer path analysis and operational deflection shape methods were employed for analyzing the characteristics of noise transfer paths, and acoustic intensity was measured through empirical experiments for analyzing the characteristics of the response system. The rigid body mode of the double pipe influences the dynamic behaviors of the liquid pipe, which is the major noise contribution path. The force exerted on the liquid pipe generates not only structure-borne noise but also air-borne noise in a heating, ventilation and air-conditioning system. An experiment was carried out to reduce such noise by distributing the high noise contribution to the low one. Through this experiment, we propose a path coupling method for noise reduction that modifies the contribution of each transfer path from the source to the receiver.

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Authors and Affiliations

  1. Institute of Advanced Machinery and Design, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul, 151-742, Korea

    Seung Taek Lim, Kyung Hoon Joo & Yeon June Kang

  2. Halla Visteon Climate Control Corp. R&D Center, 1689-1, Sinil-Dong, Daejeon, 306-230, Korea

    Hew Nam Ahn & Young Duk Park

Authors
  1. Seung Taek Lim
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  2. Kyung Hoon Joo
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  3. Hew Nam Ahn
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  4. Young Duk Park
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  5. Yeon June Kang
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Corresponding author

Correspondence to Yeon June Kang.

Additional information

Recommended by Associate Editor Cheolung Cheong

Seung Taek Lim received his B.S. degree in Mechanical Engineering from Sungkyunkwan University in 2007. He is currently in the Master’s course at the School of Mechanical and Aerospace Engineering, Seoul National University, Korea. His research areas include automotive NVH.

Yeon June Kang received his B.S. and M.S. degree in Mechanical Design and Production Engineering from Seoul National University in 1988 and 1990, respectively. His Ph.D. in Acoustics and Vibration is from the School of Mechanical Engineering, Purdue University, in 1994. Since 1997, Dr. Kang has been with the Department of Mechanical and Aerospace Engineering, Seoul National University. His research interests include acoustical materials, automotive NVH, sound quality, and Korean bells.

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Lim, S.T., Joo, K.H., Ahn, H.N. et al. Transfer characteristics of vehicle air conditioners’ booming noise. J Mech Sci Technol 28, 2025–2031 (2014). https://doi.org/10.1007/s12206-014-0402-1

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  • DOI: https://doi.org/10.1007/s12206-014-0402-1

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