Journal of Vibration and Sound

Journal of Vibration and Sound

Designing and presenting a silencer suitable for a heavy internal combustion engine

Document Type : research article

Authors
Mahdi Nami 1
Mahdi pourseifi 2
Mostafa mirtabaei 3
1 Mechanical Engineering - Tabriz University - Tabriz - Iran
2 Assistant Professor of Imam Ali Officer University (AS), Tehran, Iran
3 Head of Skill Training Department, Imam Ali Officer University (AS), Tehran, Iran
Abstract
Sound is one of the forms of mechanical energy and the two main characteristics of sound are intensity or power and frequency or wavelength of sound.

their performance against the incoming sound wave, industrial silencers can be divided into two general groups of resonating and absorption silencers, the main difference between these silencers is the release of sound energy from the channeling system, which is one of the common examples of the use of resonating type silencers, their use in It is the internal combustion engines that distinguish absorption silencers from the resonator type based on the fact that the main and visible part of the act of muting the sound is achieved by changing sound energy to heat energy.

The goal of this article is to design a muffler based on the breaking of sound frequencies resulting from the movement of fluid in the exhaust output of vehicles, which leads to a reduction of at least 50 db of sound and gives the operator enough peace and concentration. In this article, after examining three types of mufflers, absorbent mufflers that use the properties of porous absorbent material to absorb passing sound and are the simplest form of mufflers, have been selected, analyzed and reviewed and are suitable for the OM457 engine of Idem Industrial Company. It designed for maximum inlet exhaust temperature is 520 and for the maximum kW power is 315 with the maximum discharge relative pressure of 185 mbar for homogenization with the standard atmosphere.
Keywords
silencer
design
acoustics
internal combustion engine
noise reduction
Subjects
[1]. Sánchez-Orgaz, Eva María, Francisco David Denia, Jose Martínez-Casas, and Javier Carballeira. "Computational approach for the acoustic modelling of large aftertreatment devices with multimodal incident sound fields." Advances in Mechanical Engineering 15, no. 9 (2023): 16878132231199870.
[2]. Tupov, V. V. "Principles of design for intake noise silencers to meet acoustic and power requirements of two-stroke carburetor engines." In AIP Conference Proceedings, vol. 2383, no. 1. AIP Publishing, 2022.
[3]. Pavlov, G. I., P. V. Nakoryakov, and E. A. Sukhovaya. "Development of silencer for low-power internal combustion engines." Procedia Engineering 206 (2017): 1690-1695.
[4]. Kabral, Raimo, Hans Rämmal, and Jüri Lavrentjev. Acoustic studies of micro-perforates for small engine silencers. No. 2012-32-0107. SAE Technical Paper, 2012.
[5]. Maa, Dah-You. "Potential of microperforated panel absorber." the Journal of the Acoustical Society of America 104, no. 5 (1998): 2861-2866.
[6]. Yairi, Motoki, Kimihiro Sakagami, Masayuki Morimoto, and Atsuo Minemura. "Acoustical properties of microperforated panel absorbers with various configurations of the back cavity." In 12th International Congress on Sound and Vibration. 2005.
[7]. Kennedy, John, Lara Flanagan, Luke Dowling, G. J. Bennett, Henry Rice, and Daniel Trimble. "The influence of additive manufacturing processes on the performance of a periodic acoustic metamaterial." International Journal of Polymer Science 2019, no. 1 (2019): 7029143.
[8]. Everest, F. Alton. Master handbook of acoustics. 2022.
[9]. Somerscales, Euan FC. "Measurement systems: Application and design: EO Doebelin. New York: McGraw-Hill Publishing Company, 1990. ISBN 0-07-017378-9." Experimental Thermal and Fluid Science 5, no. 4 (1992): 575-575.
[10]. Goestchel, Quentin, Gwenaël Guillaume, David Ecotière, and Benoit Gauvreau. "Analysis of the numerical properties of the transmission line matrix model for outdoor sound propagation." Journal of Sound and Vibration 531 (2022): 116974.
[11]. Peat, K. S. "Book Review: Acoustics of ducts and mufflers. 1987 by ML Munjal. Chichester: John Wiley. ISBN 0-471-84738-0. 328 pages." Journal of Sound Vibration 119, no. 3 (1987): 585-586.
[12]. Powell, Alan. "Theory of vortex sound." The journal of the acoustical society of America 36, no. 1 (1964): 177-195.
[13]. Aliramezani, Masoud, Charles Robert Koch, and Mahdi Shahbakhti. "Modeling, diagnostics, optimization, and control of internal combustion engines via modern machine learning techniques: A review and future directions." Progress in Energy and Combustion Science 88 (2022): 100967.
[14]. Qiu S, Ding H, Lu T, Liu S, Qian P, Wang N, et al. Honeycomb acoustic liner based on embedded apertures and multi-depth cavities. Kexue Tongbao/Chinese Sci Bull. 2023;68.
[15]. Kyaw Oo D’Amore, Giada, Mitja Morgut, Marco Biot, and Francesco Mauro. "Numerical study on the influence of porous baffle interface and mesh typology on the silencer flow analysis." Marine Systems & Ocean Technology 17, no. 2 (2022): 71-79.
[16]. Barua, S., and Sushovan Chatterjee. "CFD analysis on an elliptical chamber muffler of a CI engine." Int. J. Heat Technol 37, no. 2 (2019): 613-619.
[17]. Denia, Francisco D., F. Javier Fuenmayor, Antonio J. Torregrosa, and Ahmet Selamet. "Numerical modelling of thermal effects on the acoustic attenuation of dissipative mufflers." In INTER-NOISE and NOISE-CON Congress and Conference Proceedings, vol. 2012, no. 10, pp. 1548-1559. Institute of Noise Control Engineering, 2012.
[18]. Stewart, G. W. "The Theory of the Herschel‐Quincke Tube." The Journal of the Acoustical Society of America 17, no. 2 (1945): 107-108.
[19]. Pavlov, G. I., P. V. Nakoryakov, and E. A. Sukhovaya. "Development of silencer for low-power internal combustion engines." Procedia Engineering 206 (2017): 1690-1695.
Journal of Vibration and Sound
Volume 13, Issue 25 - Serial Number 25
September 2024
Pages 172-184