Author : Ujjal Kalita 1
Date of Publication :31st December 2021
Abstract: In the 21st century, the automotive industry is booming. A major problem with internal combustion engines (I.C.) is that they are an important cause of noise pollution. It is for this reason that mufflers are used to reduce the noise produced. Although mufflers are not designed to perform any of the main output functions, they are included within the I.C. engines. It is designed as a sound protection device that reduces engine pressure. But mufflers need structure and geometry, if you think the physics behind it are very confusing. The muffler design developed into a repetitive process with trial and error. Recent research in this area has made it possible to do so through analytical and experimental methods. Modern engines are required to have more engine electricity and also are required to fulfil the stern pollutants standards. In a car, the exhaust muffler plays an essential position in decreasing the sound of the car, in addition to the experience itself. So as to preserve a preferred noise and at ease ride, the modes of a muffler need to be analyzed. In this study a literature review was performed on all the different aspects that could be taken while designing an exhaust muffler. Here dynamic modal analyses had been purchased using CAE evaluation to determine the mode size, strain and deformation of the exhaust muffler
Reference :
-
- M.L. Munjal, Acoustics of ducts and mufflers with application to exhaust and ventilation system design, John Wiley & Sons, 1987
- M.L. Munjal, Plane wave analysis of side inlet/outlet chamber mufflers with mean flow, Appl. Acoustics, 52, pp.165–175, 1997
- M.B. Xu, A. Selamet, I.J. Lee, N.T. Huff, Sound attenuation in dissipative expansion chambers, J. Sound Vib. Vol. 272,pp. 1125–1133, 2004
- T W Le Roy, Muffler characterization with implementation of the finite element method and experimental techniques Michigan Technological University, 2011
- A. Elsayed, C. Bastien, H. Medina, S. Jones, H. Kassem, Enhancing Noise Attenuation in Exhaust Mufflers on Response to Baffle Configuration, Int. J. Eng. Manuf.vol 7 pp. 12–25, 2017
- U. Kalita, M. Singh, Design and CFD analysis of flow through a reactive muffler of four cylinder diesel engine, recent trends in Engg. Design, Lecture Notes of Mechanical Engg,pp. 211-223, 2021
- P.O.A.L. Davies, R.J. Alfredson, Performance of Exhaust Silencer, J. Sound Vib. Vol. 15, pp.175–196, 1971
- D. Potente, General design principles for an automotive muffler, Annu. Conf. Aust. Acoust. Soc. 2005, Acoust. Chang. Environ., pp. 121–126, 2005
- O.Z. Mehdizadeh, M. Paraschivoiu, A three-dimensional finite element approach for predicting the transmission loss in mufflers and silencers with no mean flow, vol 66, pp. 902–918, 2005
- M.L. Munjal, Recent advances in muffler acoustics, Int. J. Acoust. Vib, vol. 18, pp.71–85, 2013
- V. Sherekar, P.R. Dhamangaonkar, Design principles for an automotive muffler Int. J. Appl. Eng. Res, Vol. 9 pp. 483– 489,2014
- S. Balamurugan, N. Jeyaprakash, K. Manikandan, Design and Fabrication of Muffler for Four Stroke Diesel Engine, Int. J. Sci. Eng. Technol. Vol. 4, pp. 136–140, 2015
- A. Ahmed, Design and construction of absorption type muffler and compare it with engine ’ s existing muffler prepared by, (n.d.)
- ] P. Saripalli, CFD Analysis on Flow Through a Resistance Muffler of LCV Diesel Engine, Int. J. Sci. Technol. Soc. Vol. 3, 2015
- P. Srinivas, V.R. Mamilla, G. Lakshmi, N. Rao, M. Ahmed, Design and Analysis of an Automobile Exhaust Muffler, Ind. Syst. Eng. Vol 1, pp.10–15, 2016
- G. Gnanendhar Reddy, N. Prakash, Design and fabrication of reactive muffler, Int. J. Chem. Sci. Vol.14, pp.1069–1076, 2016
- V.D. Prajapati, Design and Analysis of Automotive Muffler, Vol 5, pp. 384–389, 2016
- M.R. R, Components That Influence Airflow Out of the Engine Are As Three-Way,Int. J. Automob. Eng. Res. Dev.Vol. 2, pp. 11–21, 2012
- P.V. Lokhande, Design Analysis of Exhaust Muffler With VOC Emission Filter,Int. Res. J. Eng. Technol. pp. 699–709, 2012
- 20. J.H. Chaudhri, P.B.S. Patel, P.S.A. Shah, Muffler Design for Automotive Exhaust Noise Attenuation - A Review, Vol 4, pp. 220–223, 2014
- U. Kalita, M. Singh, Optimization of a reactive muffler used in four-cylinder petrol engine into hybrid muffler by using CFD analysis, Materials Proceeding Today, (2021) [22] N. Patil, S. Chaudhary, CFD analysis of exhaust backpressure for four-stroke ciengine, Vol.3,pp. 247–252, 2018.