Comparison of experimental and modeled insertion loss of a complex multi-chamber muffler

  • Helen Ule University of Windsor, Mech., Automotive and Materials Eng., 401 Sunset Ave., Windsor, Ont., Canada
  • Colin Novak University of Windsor, Mech., Automotive and Materials Eng., 401 Sunset Ave., Windsor, Ont., Canada
  • Ramani Ramakrishnan University of Windsor, Mech., Automotive and Materials Eng., 401 Sunset Ave., Windsor, Ont., Canada
  • Robert Gaspar University of Windsor, Mech., Automotive and Materials Eng., 401 Sunset Ave., Windsor, Ont., Canada
Keywords: Acoustic emissions, Acoustic noise, Computer simulation, Exhaust systems (engine), Finite difference method, Insertion losses, Automotive noise emissions, Multi-chamber mufflers

Abstract

The effectiveness of using a theoretical model as a design tool for automotive muffler applications was investigated. Theoretical insertion loss of the computer model compared favorably to those determined from the experiments. It was shown that the sound pressure level (SPL) without the muffler was greater than the SPL with the muffler. Addition of the spectral information gave a total SPL of 97.4 dB without the muffler and 82.2 dB with the muffler. An insertion loss of about 15 dB was obtained.
Published
2002-09-01
How to Cite
1.
Ule H, Novak C, Ramakrishnan R, Gaspar R. Comparison of experimental and modeled insertion loss of a complex multi-chamber muffler. Canadian Acoustics [Internet]. 2002Sep.1 [cited 2019Aug.19];30(3):74-5. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1461
Section
Proceedings of the Acoustics Week in Canada

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