Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on the Performance Improvement of Medium Speed Diesel Engine Exhaust Silencer in the Low-frequency Range Using Array Resonators

공명기 배열을 이용한 중속 디젤엔진 배기 소음기의 저주파수 대역 성능 개선 연구

  • 김영현 (현대중공업 진동소음연구실) ;
  • 주원호 (현대중공업 진동소음연구실) ;
  • 배종국 (현대중공업 기술개발본부)
  • Published : 2009.07.20
Download PDF
⟨ Previous Next ⟩

Abstract

Various acoustic tests were carried out to investigate the acoustic performance of diesel engine exhaust silencers. In order to consider flow effects, the test facility was set up composed of fan, duct and silencer. Using the test facility, insertion loss tests were carried out to improve the acoustic performance in the low-frequency ranges. Through a series of tests, it was found out that the array resonators having multi-perforated holes inside the exhaust silencer, might be very effective in the low frequency range. Consequently, the hybrid-type silencer which is the combination of reflective silencer with array resonators and conventional absorptive silencer, was proposed and its high performance in the low-frequency range was also verified.

Keywords

References

  1. Lee, T.-K., Joo, W.-H. and Bae, J.-G., 2008, “Exhaust Noise Control of Diesel Engine Using Hybrid Silencer,” Inter-noise 2008
  2. Lee, S.-H., Ih, J.-G. and Choi, W.-Y., 2005, “The Acoustic Performance Measurement of Silencers in Reflective Field,” Proceedings of the KSNVE Annual Spring Conference, pp. 625~628
  3. Seo, S.-H. and Kim, Y.-H., 2005, “Silencer Design by Using Array Resonators for Lowfrequency Band Noise Reduction,” J.Acoust. Soc. Am. Vol. 118, No. 4, pp. 2332∼2338 https://doi.org/10.1121/1.2036222
  4. Seo, S.-H. and Kim, Y.-H., 2004, “Acoustic Characteristics of a Silencer by Using Array Resonators,” Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 14, No. 10, pp. 975~982 https://doi.org/10.5050/KSNVN.2004.14.10.975

Cited by

  1. Evaluation of Reduction in Reflection Sound bound from a Shaped Noise Barrier Panel vol.17, pp.5, 2015, https://doi.org/10.7855/IJHE.2015.17.5.019