Acoustic Analysis of Exhaust Muffler of a 4-Stroke Engine
Date Published: 2009-06-15
Paper Number:2009-01-1980
DOI: 10.4271/2009-01-1980
Citation:
Vishwakarma, A., Chandramouli, P., and Ganesan, V., "Acoustic Analysis of Exhaust Muffler of a 4-Stroke Engine," SAE Int. J. Passeng. Cars - Mech. Syst. 2(1):1303-1311, 2009, doi:10.4271/2009-01-1980.
Author(s):
Abhishek Vishwakarma - Engineering Research Centre, Tata Motors Ltd.
P. Chandramouli - Indian Institute of Technology
V. Ganesan - Indian Institute of Technology
Abstract:
A one-dimensional analysis was performed to analyze a three-pass muffler with perforated tubes for Transmission Loss, using numerical decoupling approach. Effect of mean flow on transmission loss inside the muffler was studied. To account for the three-dimensional nature of acoustic waves at higher frequencies, a three dimensional finite element analysis was done using SYSNOISE. The Transmission loss results of the three-dimensional analysis were compared with those of one-dimensional analysis for no flow case and shown to agree reasonably for lower frequency range.
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