Design of a Hybrid Exhaust Silencing System for a Production Engine 2005-01-2349
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.
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. Download Citation
Author(s):
I. J. Lee, A. Selamet, N. T. Huff, M. Hrdlicka
Affiliated:
The Ohio State University, Owens Corning, Škoda Auto a.s.
Pages: 10
Event:
SAE 2005 Noise and Vibration Conference and Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 2005 Transactions Journal of Passenger Cars: Mechanical Systems-V114-6
Related Topics:
Production
Hardware
Acoustics
Transmissions
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »