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- Title
A Muffler with Adaptive Acoustic Properties.
- Authors
Šteblaj, Peter; Čudina, Mirko; Lipar, Primož; Prezelj, Jurij
- Abstract
During the adaptation process of these systems, the basic principle of operation is not changed. Based on the literature review, the question arises of whether it would be possible to control the principle of operation. At one instant it would work as a Helmholtz resonator, in the other as an expansion chamber or side branch resonator. Analytical calculations provided a positive answer, and a muffler with four active valves was designed and constructed to confirm the theoretical expectations. The properties of proposed muffler were simulated with the Finite Element Method, and the results of simulations were validated with measurements. Finally, simulations of the proposed muffler were performed, working at different operating condition. Simulations have shown that the proposed system allows the tuning of the muffler to a wide working frequency range. Such an approach to muffler design eliminates the need for additional mufflers in IC exhaust systems. Therefore, a smaller volume of the proposed muffler enables the same effect as multiple non-adaptive conventional mufflers.
- Subjects
MUFFLERS (Internal combustion engines); HELMHOLTZ resonators; FINITE element method; ACOUSTICS research; MECHANICAL engineering
- Publication
Journal of Mechanical Engineering / Strojniški Vestnik, 2015, Vol 61, Issue 10, p553
- ISSN
0039-2480
- Publication type
Article
- DOI
10.5545/sv-jme.2015.2711