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Development of an Offline Simulation Tool to Test the On-Board Diagnostic Software for Diesel After-Treatment Systems
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 16, 2007 by SAE International in United States
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An innovative approach for the simulation of the interaction between the software to be implemented in the Electronic Control Unit (ECU) of the vehicle and the engine is described. The aim was to perform a complete simulation of the engine coupled with the ECU, in order to support multi-disciplinary development and to enable engineers to verify and validate control models in early development stages, reducing costs by performing fewer live engine tests. Also, the simultaneous simulation of the models allows to study their interaction, thus allowing an early exploration of the possible design choices over multiple disciplines.
A first prototype of the coupling has been implemented, with an emphasis on realizing a common notion of time and a proper treatment of data exchange between the control model and the engine model. The approach followed for the development of the coupling technique has been described to show how the different environments can share and manage the memory area allocated for the storage of the control variables.
The on-board pressure drop measurement system of a diesel engine, integrated in a feedback loop with the control algorithm of the ECU, has been simulated by a 1D mathematical DPF model (representing a virtual probe) coupled with different control models (written in Simulink), which modifies the engine control variables while the simulation is running. The 1D DPF model, developed by the authors, has been previously validated and calibrated by a comparison with the experimental data available from literature [3, 4], in order to correctly simulate the signal of the virtual probes.
CitationPiscaglia, F. and Ferrari, G., "Development of an Offline Simulation Tool to Test the On-Board Diagnostic Software for Diesel After-Treatment Systems," SAE Technical Paper 2007-01-1133, 2007, https://doi.org/10.4271/2007-01-1133.
- Piscaglia F., Rutland C.J., and Foster D. E.. Development Of A CFD Model To Study The Hydrodynamic Characteristics And The Soot Deposition Mechanism On The Porous Wall Of A Diesel Particulate Filter. SAE Int. Congress & Exp. (Detroit, Michigan) 2005, paper n. 2005-01-0963, April 11-14, Detroit (MI), 2005.
- Montenegro G., Piscaglia F., Onorati A., Cioffi P., and Catalano G.. A 1D Unsteady Thermo-Fluid Dynamic Approach for the Simulation of the Hydrodynamics of Diesel Particulate Filters. AE Int. Congress & Exp. (Detroit, Michigan) 2006, paper n. 2006-01-0262, Detroit (MI), 2006. SAE Transactions, Journal of Engines, 2006.
- Huynh C., Johnson J. H., Yang S., Bagley S., and Warner J.. A One-Dimensional Computational Model for Studying the Filtration and Regeneration Characteristics of a Catalyzed Wall-Flow Diesel Particulate Filter. SAE Int. Congress & Exp. 2003, paper n. 2003-01-0841, Detroit (MI), 2003.
- Shende A. S., Johnson J. H., Yang S. L., Bagley S. T., Warner J., and Thalagavara A. M.. The Filtration and Particulate Matter Oxidation Characteristics of a Catalyzed Wall-Flow Diesel Particulate Filter: Experimental and 1-D 2-Layer Model Results. SAE Int. Congress & Exp. (Detroit, Michigan) 2005, paper n. 2005-01-0949, April 11-14, Detroit (MI), 2005.
- Mathworks. The Mathworks solution number 9379. www.mathworks.com, 1999.
- Konstandopoulos A.G., Masoudi M., and al. Inertial Contributions to the Pressure Drop of Diesel Particulate Filters. SAE 2001-01-0909, 2001.
- Dullien F.A.L.. Porous Media - Fluid Transport and Pore Structure. Academic, New York, 1979.
- Masoudi M.. Hydrodynamics of Diesel Particulate Filters. SAE Int. Congress & Exp. 2002 (Detroit, Michigan), paper n. 2002-01-1016, 2002.
- Piscaglia F., Montenegro G., and Onorati A.. A 1D Unsteady Thermo-Fluid Dynamic Approach for the Simulation of Diesel Particulate Filters. Thiesel 2006 Conference on Thermo and fluid dynamic processes in Diesel Engines, September 12th - 15th 2006, Valencia (Spain), 2006.
- Ferrari G., Piscaglia F., and Onorati A.. 1D Modeling of the Hydrodynamics and of the Regeneration mechanism in Continuous Regenerating Traps. “The sustainable mobility challenge” - ATI-SAE International Session, September 12th-15th 2006, Perugia (Italy), SAE paper n. 2006-01-3011, 2006.
- Konstandopoulos A. G. and Johnson J. H.. Wall-Flow Diesel particulate Filters - Their pressure drop and Collection Efficiency. SAE 890405, 1989.
- Bissett E.J.. Mathematical model of the thermal regeneration of a wall-flow monolith diesel particulate filter. Chemical Engineering Science, Vol 39, n.7/8:pp. 1233-1244, 1984.
- Bissett E.J. and Oh Se H.. Electrically heated converters for automotive emission control: determination of the best size regime for the heated element. Chemical Engineering Science, Vol 54:pp. 3957-3966, 1999.
- Peters B. J., Wanker R. J., Menzer Andreas, and Wurzenberger J.C.. Integrated 1D to 3D Simulation Workflow of Exhaust Aftertreatment Devices. SAE 2004-01-1132, 2004.
- Heywood J.B.. Internal Combustion Engine Fundamentals. McGraw-Hill, 1988. Automotive Engineers, 1990.
- Versteeg H. K. and Malalasekera W.. An Introduction to computational fluid dynamics. The finite volume method. Longman Scientific and Technical, Harlow, 1995.
- Ferziger J. H. and Perić M.. Computational Methods for Fluid Dynamics. Springer, 1997.
- Toro E. F.. Riemann solvers and numerical methods for fluid Dynamics. Springer, 1997.
- Winterbone D.E. and Pearson R. J.. Theory of engine manifold design. Professional Engineering Publishing, London, 2000.
- Ferrari G.. Motori a Combustione Interna. Edizioni Il Capitello, 2002.
- Rouse Hunter and Appel D.W.. Advanced Mechanics of Fluids. New York, Wiley, 1959.
- Konstandopoulos A.G., Kostoglou M., Skaperdas E., Papaioannou E., Zarvalis D., and Kladopoulou E.. Fundamentals Studies of Diesel Particulate Filters: Transient Loading, Regeneration and Aging. SAE 2000-01-1016, 2000.