This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Optimization of a Variable Geometry Exhaust System Through Design of Experiment
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2008 by SAE International in United States
Annotation ability available
Experimental Design methodologies have been applied in conjunction with objective functions for the optimization of the internal geometry of a rear muffler of a subcompact car equipped with a 1.4 liters displacement s.i. turbocharged engine. The muffler also features an innovative variable geometry design.
The definition of an objective function summarising the silencing capability of the muffler has been driving the optimization process with the aim to reduce the tailpipe noise while maintaining acceptable pressure losses and complying with severe space constraints.
Design of Experiments techniques for the reduction of experimental plans have been shown to be extremely effective to find out the optimum values of the design parameters, allowing a remarkable reduction of the time required by the design process in comparison with full factorial designs.
CitationMillo, F., Badami, M., Longhini, F., Rubino, M. et al., "Optimization of a Variable Geometry Exhaust System Through Design of Experiment," SAE Technical Paper 2008-01-0675, 2008, https://doi.org/10.4271/2008-01-0675.
- Morel, T., LaPointe, N.: “Concurrent Simulation and Testing Concept in Engine Development”, SAE Paper 940207, 1994.
- Keribar, R., Ciesla, C. R., Morel, T: “Engine/Powertrain/Vehicle Modeling Tool Applicable to all Stages of the Design Process”, SAE Paper 2000-01-0934, 2000.
- Morel, T., Keribar, R., Leonard, A.: “Virtual Engine/Powertrain/Vehicle Simulation Tool Solves Complex Interacting System Issues”, SAE Paper 2003-01-0372, 2003.
- Jebasinski, R. “Calculation of the tail pipe noise of exhaust systems with Wave”, 1st Ricardo sw User Meeting, Detroit, Usa, 1996.
- Onorati, A., Montenegro, G., D'Errico, G.: “Prediction of the Attenuation Characteristics of IC Engine Silencers by 1-D and Multi-D Simulation Models”, SAE Paper 2006-01-1541, 2006.
- Fairbrother, R. J., Varhos, E.: “Acoustic Simulation of an Automotive Muffler with Perforated Baffles and Pipes”, SAE Paper 2007-01-2206, 2007.
- Uehara, H., Saito, M., Koizumi, T., Tsujiuchi, N.: “Application of Multi-objective Optimization to Exhaust Silencer Design”, SAE Paper 2007-01-2210, 2007.
- Jebasinski R., Rose T.: “Design of Experiment - Application of a Statistical Evaluation Method to Optimize the Tailpipe Noise of An Exhaust System”, SAE Paper 2003-01-1655, 2003.
- Gamma Technologies Inc.: “GT-POWER User's Manual”, 2006.
- Green, A. J., Smith, P.N.: “Gas flow noise and pressure loss in Heavy Vehicle Exhaust Systems” IMechE, 1988, C17/88, 47.
- Montgomery, D.C.: “Design and Analysis of Experiments”, John Wiley & Sons Ed., New York, 1991.
- Arcidiacono G., Capitani R., Vianello M.: “Simulated experimental design used to define the characteristic curves of car shock-absorbers”, Quality and Reliability Engineering International, Wiley InterScience Ed., Vol. 17, N. 2, March-April 2001.
- Re Fiorentin S.: “Design of Experiments e Robust Design”, Centro Ricerche Fiat, internal publication (in italian).