Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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An Experimental Study on the Radiated Noise induced by Pressure Pulsation through Muffler in Engine Exhaust System

기관 배기형의 머플러에서 압력맥동에 기대된 방사음에 관한 실험적 연구

  • 조경옥 (명지대학교 기계공학과)
  • Published : 1998.09.01
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Abstract

In automobile exhaust system. Internal pressure pulsation and shell vibration greatly affect the surface sound radiation. This noise is emitted from the muffler outer shell due to the pulsation of the exhaust gas pressure. This paper describes an analytical study of these characteristics as influenced by exhaust system structure. An exhaust simulator was used for generating the pressure pulsation. The relationship between shell vibration and radiated noise was used for generating the pressure pulsation. The relationship between shell vibration and radiated noise was identified by finding FRF.

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References

  1. SAE Technical Paper No.911850 Anl Alternative Method for the Prediction of Unsteady Gas Flow Through the Internal Combustion Engine G. P. Blair
  2. 日本音響學會誌 v.48 no.11 自動車排氣音の音色平價法 小澤(외)
  3. 自動車技術會論文集 v.24 no.1 吸排氣系の減音量の豫測 倉田(외)
  4. SAE, Noise and Vibration Conference v.89 Objective Rating of Rumble in Vehicle Passenger Compartment during Acceleration T. Wakita;Y. Kozawa
  5. 한국자동차학회 논문집 v.4 no.4 자동차 배기계의 압력파 전파특성에 관한 연구 차경옥;이준서
  6. Int. J. Mech. Sci. v.6 A Numerical Solution of Unsteady Flow Problems R. S. Benson(et al)
  7. Random Data Analysis and Measurement Procedures J. S. Bendat;A. G. Piersol
  8. Engineering Application of Correlation and Spectral Analysis J. S. Bendat;A. G. Piersol
  9. An Analytical study of Surface Sound Radiation from Automobile Exhaust System Isamu Nakada;Yasushi Yoshihara