The competition to deliver ultra low emitting vehicles at a reasonable cost is driving the automotive industry to invest significant manpower and test lab resources in the design optimization of increasingly complex exhaust aftertreatment systems. Optimization can no longer be based on traditional approaches, which are intensive in hardware use and lab testing. This paper discusses the extents and limitations of applicability of state-of-the-art mathematical models of catalytic converter performance. In-house software from the authors’ lab, already in use during the last decade in design optimization studies, updated with recent, important model improvements, is employed as a reference in this discussion. Emphasis is on the engineering methodology of the computational tools and their application, which covers quality assurance of input data, advanced parameter estimation procedures, and a suggested performance measure that drives the parameter estimation code to optimum results and also allows a less subjective assessment of model prediction accuracy. Extensive comparisons between measured and computed instantaneous emissions over full cycles are presented, aiming to give a good picture of the capabilities of state of the art engineering models of automotive catalytic converter systems.
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October 2004
Technical Papers
Three-Way Catalytic Converter Modeling as a Modern Engineering Design Tool
G. N. Pontikakis,
G. N. Pontikakis
Mechanical and Industrial Engineering Department, University of Thessaly, 383 34 Volos, Greece
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G. S. Konstantas,
G. S. Konstantas
Mechanical and Industrial Engineering Department, University of Thessaly, 383 34 Volos, Greece
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A. M. Stamatelos
e-mail: stam@uth.gr
A. M. Stamatelos
Mechanical and Industrial Engineering Department, University of Thessaly, 383 34 Volos, Greece
Search for other works by this author on:
G. N. Pontikakis
Mechanical and Industrial Engineering Department, University of Thessaly, 383 34 Volos, Greece
G. S. Konstantas
Mechanical and Industrial Engineering Department, University of Thessaly, 383 34 Volos, Greece
A. M. Stamatelos
Mechanical and Industrial Engineering Department, University of Thessaly, 383 34 Volos, Greece
e-mail: stam@uth.gr
Contributed by the Internal Combustion Engine Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received by the ICE Division, December 1, 2002; final revision received September 1, 2003. Associate Editor: D. Assanis.
J. Eng. Gas Turbines Power. Oct 2004, 126(4): 906-923 (18 pages)
Published Online: November 24, 2004
Article history
Received:
December 1, 2002
Revised:
September 1, 2003
Online:
November 24, 2004
Citation
Pontikakis , G. N., Konstantas , G. S., and Stamatelos, A. M. (November 24, 2004). "Three-Way Catalytic Converter Modeling as a Modern Engineering Design Tool ." ASME. J. Eng. Gas Turbines Power. October 2004; 126(4): 906–923. https://doi.org/10.1115/1.1787506
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