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Development of Real Time Catalyst Model for Engine & Powertrain Control Design
Technical Paper
2009-01-1273
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Engines and vehicle systems are becoming increasing complex partly due to the incorporation of emission abatement components as well as control strategies that are technologically evolving and innovative to keep up with emissions requirements. This makes the testing and verification with actual prototypes prohibitively expensive and time-consuming. Consequently, there is an increasing reliance on Software-In-the-Loop (SIL) and Hardware-In-the-Loop (HIL) simulations for design evaluation of system concepts.
This paper introduces a methodology in which detailed chemical kinetic models of catalytic converters are transformed into fast running models for control design, calibration or real time ECU validation. The proposed methodology is based on the use of a hybrid, structured, semi-automatic scheme for reducing high-fidelity models into fast running models. The resulting hybrid model consists of a set of neural network-based static sub-models that account for the large non-linearity of the system, concatenated with physical sub-models that account for the dynamics and hysteresis that are inherent in the processes being modeled.
A model of DOC-SCR catalyst system was chosen as the surrogate for this methodology. In this regards, the paper will describe procedures involving identification of relevant parameters using experimental data and design of experiment (DOE) optimization. The DOE results were used to train hybrid-NN Model. The comparison of the results show that the methodology conserves accuracy and achieves computational efficiency, thus making advanced engine control design, calibration and ECU validation (involving coupled engine, aftertreatment and vehicle models) in some cases simply feasible, and in other cases more secure, faster and easier.
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Wenzel, S., Despujols, B., Wahiduzzaman, S., and Papadimitriou, I., "Development of Real Time Catalyst Model for Engine & Powertrain Control Design," SAE Technical Paper 2009-01-1273, 2009, https://doi.org/10.4271/2009-01-1273.Also In
References
- Ciesla C. Keribar R. Morel T. “Engine/Powertrain/Vehicle Modeling Tool Applicable to All Stages of the Design Process,” SAE NO. 2000-01-0934 Detroit, MI 2000
- Fons M. Vigild C. Chevaler A. Hendricks E. Sorenson S. C. “Mean value Modeling of an SI Engine with EGR,” SAE NO. 1999-01-0909 Detroit, MI 1999
- Karlson J. F. redriksson J. “Cylinder-by-Cylinder Engine Models vs Mean Value Engine Models for Use in Powertrain Control Applications,” SAE NO. 1999-01-0906 Detroit, MI 1999
- Papadimitriou I. Silvestri J. et al. “Development of Real-Time Capable Engine Plant Models for use in HIL systems” SAE NO. 2008-01-0990 Detroit, MI 2008
- Wahiduzzaman S. Wenzel S. Despujols B. Tang W. “Development of Diesel Engine & Catalyst Model Derived from Detailed Model for Engine & Powertrain Control Design,” SIA International Conference Rouen, France 2008
- Bissett E.J. Oh S.H. “Modeling Electrically Heated Converters for Automotive Emission Control: Determination of the best size regime for the heated element” Chemical Engineering Science 1999 54 3957 3966
- Bissett E.J. Oh S.H. Battiston P.A. “Mathematical Modeling of Electrically Heated Monolith Converters: Model Formulation, Numerical Methods, and Experimental Verification” Ind. Eng. Chem. Res. 1993 32 1950 1957
- Chakravarthy K. “Modeling Chemistry in Lean NOx Traps Under Reducing Conditions” SAE NO. 2006-01-3446 .
- Chatterjee D. Weibel W. Nova I. Tronconi E. Burkhardt T. Grossale A. “Numerical Simulation of Zeolite- and V-Based SCR Catalytic Converters” SAE NO. 2007-01-1136
- Chatterjee D. Weibel W. Nova I. Tronconi E. Ciardelli C. Burkhardt T. “Numerical Simulation of NO/NO2/NH3 Reactions on SCR-Catalytic Converters: Model Development and Applications” SAE NO. 2006-01-0468
- Tang W. Wahiduzzaman Wenzel S. et al. “Deleopment of a Quasi- Steady Approach Based Simulation Tool for System Level Exhaust Aftertreatment Modeling” SAE NO. 2008-0866 Detroit, MI 2008
- Morel T. Keribar R. Silvestri J. Wahiduzzaman S. “Integrated Engine/Vehicle Simulation and Control” SAE NO. 1999-01-0907 Detroit, MI 1999
- Wahiduzzaman S. Tang W. Wenzel S. Leonard A. “Modeling of Integrated Aftertreatment Systems” SAE NO. 2007-01-4127
- Fiorani P. Gambarotta A. Lucchetti G. Ausiello F. De Cesare M. Serra G. “A detailed Mean Value Model of the exhaust system of an automotive Diesel engine” SAE NO. 2008-28-0024