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A Modeling and Experimental Investigation on an Innovative Substrate for DPF Applications
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 12, 2010 by SAE International in United States
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XP-SiC is an innovative type of a porous substrate material on the basis of a reaction formed SiC for DPF applications. The high porosity, large pore size inside the cell wall and low specific weight are the special characteristics of this substrate. The aim of the current paper is to present an investigation based on the experimental and modeling approaches to evaluate the back pressure, filtration efficiency and the thermal durability. The latter one was assessed by measuring and predicting the temperature field, as well as calculating the thermal stresses. For this purpose the filter was modeled in the commercial computational code axitrap as a stand-alone tool, in which the conservation equations of mass continuity, momentum, energy and species were solved. The soot filtrations, loading as well as the regeneration by fuel-borne catalyst were modeled. The microstructure properties of the filter and the chemistry parameters for the fuel-borne catalyst were calibrated against engine test bench data. On the engine test bench, the regeneration behavior was determined by loading the filter to different amount of initial soot levels before regeneration. Then the regeneration was tested by running the engine to drop-to-idle (DTI) in order to simulate the worst case scenario. The predicted temperature field and the temperature gradient by axitrap, was the input for the finite element simulation for prediction of thermal stresses in the filter. In addition a benchmark between the catalyzed XP (cXP) and a Cordierite 200/12 was performed regarding the back pressure and filtration efficiency.
CitationHajireza, S., Johannesen, L., Wolff, T., Koltsakis, G. et al., "A Modeling and Experimental Investigation on an Innovative Substrate for DPF Applications," SAE Technical Paper 2010-01-0891, 2010, https://doi.org/10.4271/2010-01-0891.
- Heywood, B.J., “Internal Combustion Engine Fundamentals”, McGraw-Hill International Editions, ISBN 0-07-100499-8.
- Konstandopoulos, A.G., and Kladopoulou, E, “The Optimum Cell Density for Wall-Flow Monolithic Filters: Effects of Filter Permeability, Soot Cake Structure and Ash Loading,” SAE Technical Paper 2004-01-1133, 2004.
- Opris, C.N. and Johnson, J. H., “A 2D Computational Model Describing the Flow and Filtration Charactersitics of a Ceramic Diesel Particulate Trap,” SAE Technical Paper 980545, 1998.
- Masoudi, M., “Pressure Drop of Segmented Diesel Particulate Filters,” SAE Technical Paper 2005-01-0971, 2005.
- Koltsakis, G.C., Samaras, Z.C., Echtle, H., Chatterjee, D., Markou, P. and Haralampous, O.A., “Flow Maldistribution Effects on DPF Performance,” SAE Technical Paper 2009-01-1280, 2009.
- Gulati, S.T. “Thermal Stresses in Ceramic Wall Flow Diesel Filters,” SAE Technical Paper 830079, 1983.
- Heck, R.M., Farrauto, R.J. and Gulati, S.T., “Catalytic Air Pollution Control”, 2nd Edition, John Wiley & Sons, Inc, ISBN 0-471-43624-0
- Hajireza, S., Lundorf, P. and Wolff, T., “XP-SiC: Ann Innovative Substrate for Future Applications with Low Weight and High Porosity”, http://www1.eere.energy.gov/ vehicles and fuels resources proceedings 2009.
- Wolff, T., Friedrich, H., Tinggaard, J.L., and Hajireza, S., “XP-SiC: A New Approach to Design High Porosity Substrates,” SAE Technical Paper 2010-01-0539, 2010.
- Axitrap v. 3.290, User's Guide, Exothermia SA, (www.exothermia.com), 2009.
- Dynamis Reference Manual, v.2.0.0, (www.dtech.gr), 2008.
- Koltsakis, G.C., Haralampous O. A., Margaritis N. K., Samaras Z. C., Vogt C.D., Ohara E., Watanabe Y., Mizutani T.: 3-Dimensional Modeling of the Regeneration in SiC Diesel Particulate Filters, (SAE 2005-01-0953), SAE Transactions: Journal of Fuels & Lubricants, 2005.
- Haralampous O. A., Koltsakis G. C., Samaras Z.C., “Partial Regenerations in Diesel Particulate Filters,” SAE Technical Paper 2003-01-1881, 2003.
- Stratakis G., Stamatelos A. M., “Flow distribution Effects in the Loading and Catalytic Regeneration of Wall-Flow Diesel Particulate Filters” Proceedings of the I MECH E Part D Journal of Automobile Engineering, Vol. 218, 2, p. 203, 2004.
- Haralampous O. A., Koltsakis G. C., Samaras Z.C., Vogt C. D., Ohara E., Watanabe Y., Mizutani T., “Modeling and Experimental Study of Uncontrolled Regeneration in SiC Filters with Fuel Borne Catalyst,” SAE Technical Paper 2004-01-0697, 2004.
- Haralampous O. A., Koltsakis G. C.: “Back-diffusion Modeling of NO2 in Catalyzed Diesel Particulate Filters”, Industrial & Engineering Chemistry Research, Vol. 43, 4, pp. 875-883, 2004.
- Haralampous O. A., Koltsakis G. C., Samaras Z.C., Vogt C. D., Ohara E., Watanabe Y., Mizutani T., “Reaction and Diffusion Phenomena in Catalyzed Diesel Particulate Filters,” SAE Technical Paper 2004-01-0696, 2004.