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Prediction of Sound Attenuation Characteristics of Mufflers

Bhat, Chandrashekhar and Sharma , S S and Jagannath, K and Mohan, N S and Sathisha, S G (2010) Prediction of Sound Attenuation Characteristics of Mufflers. World Journal of Engineering, 7 (3). pp. 115-116. ISSN 1708-5284

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Abstract

Internal combustion engines are fitted with exhaust muffler to attenuate the pressure pulsation generated during combustion process. Effective prediction of sound pressure loss of hot gases as it flows through the muffler greatly helps in the design of mufflers. An attempt has been made here to predict the transmission loss through modal analysis, followed by acoustic analysis using finite element analysis for three different configurations of mufflers under different fixing conditions. It was found that three chamber muffler provides higher attenuation of sound pressure compare to one and two chamber mufflers and also fixing the muffler at the center provides further helps in sound pressure attenuation.

Item Type: Article
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 27 Feb 2013 10:40
Last Modified: 27 Feb 2013 10:40
URI: http://eprints.manipal.edu/id/eprint/78771

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