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Acoustic analysis and modelling of Reactive muffler to reduce noise of the system

Published in IJSER
Volume: 12
Issue: 6
Pages: 535 - 540

Abstract— as per the new rules and regulations set by the government to minimize emission it is necessary to automobile makers to work on ex-haust system for minimizing emission and noise of the system.So now we see that industry adopt new BS6 norms for minimizing emission.
Muffler is the device which is used for minimizing noise and back pressure of the system. Muffler plays and
important role in minimizing transmission loss, because all these parameters affects the fuel efficiency of the system.
Typically three types of muffler is used 1.reactive muffler.2 Absorptive muffler. 3. Combination of both. Most of automotive mufflers are reactive type.
Absorptive type of mufflers working on principle of absorption of energy.
This paper study the acoustic analysis of reactive muffler with various placements of baffle plates in chamber. The purpose of study this paper is that,
Effect of different placement of outlet chamber on transmission loss with the help of numerical analysis.
We used COMSOL Multiphysics for numerical analysis because of better compatibility for acoustic analysis and transmission loss
Index Terms
Terms— Reactive muffler, baffle plates, Numerical Analysis, Comsol Multiphysics, Transmission Loss, Chamber.

About the journal
JournalInternational Journal of Scientific & Engineering Research
Open AccessYes