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Design of a Hybrid Exhaust Silencing System for a Production Engine
Technical Paper
2005-01-2349
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A prototype hybrid exhaust silencing system consisting of dissipative and reactive components is designed based on the boundary element method (BEM) with a specific emphasis on its acoustic performance as evaluated relative to a production system. The outer dimensions of the prototype system are comparable to its production counterpart, which has two silencers connected by a pipe. The predicted transmission loss by BEM for the prototype is compared with the experimental results in an impedance tube for both the prototype and production hardware, providing a design guidance for the former. The sound pressure levels measured at the tailpipe exit during the engine ramp-up experiments in a dynamometer laboratory are presented to compare the two systems, providing the final assessment. The acoustic effect of the pipe connecting the two prototype silencers is also examined computationally, along with a discussion of the measured flow performance and the surface temperatures of silencers in both systems.
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Authors
Citation
Lee, I., Selamet, A., Huff, N., and Hrdlicka, M., "Design of a Hybrid Exhaust Silencing System for a Production Engine," SAE Technical Paper 2005-01-2349, 2005, https://doi.org/10.4271/2005-01-2349.Also In
SAE 2005 Transactions Journal of Passenger Cars: Mechanical Systems
Number: V114-6; Published: 2006-02-01
Number: V114-6; Published: 2006-02-01
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