Optimization of a Variable Geometry Exhaust System Through Design of Experiment
Date Published: 2008-04-14
Paper Number:2008-01-0675
DOI: 10.4271/2008-01-0675
Citation:
Millo, 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, doi:10.4271/2008-01-0675.
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.
See papers presented at SAE World Congress & Exhibition, April 2008, Detroit, MI, USA, Session: Modeling of SI and Diesel Engines (Part 4 of 6) Engine Breathing/Gas Dynamics and Acoustics/Turbocharging
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