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Development of Metal Foam Based Aftertreatment System on a Diesel Passenger Car
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2008 by SAE International in United States
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An alternative metal foam substrate for exhaust aftertreatment applications has been recently presented and characterized. The present paper focuses on the potential of the metal foam technology as an efficient DOC and CDPF substrates on real-world conditions. The target platform is a mid-size passenger car and the methodology includes both modeling and experiments. The experimental testing starts from small-scale reactor characterization of the basic heat/mass transfer properties and chemical kinetics. The results show that the foam structure exhibits excellent mass-transport properties offering possibilities for precious metal and catalyst volume savings for oxidation catalyst applications. These results are also used to calibrate an advanced 2-dimensional model which is able to predict the transient filtration and reaction phenomena in axial and radial flow systems. Based on the model results, full-scale prototypes are designed and manufactured for application on 2.2 liters diesel engine for both DOC and CDPF functionalities. The prototypes are tested initially on the engine dyno and then on the chassis dyno on the European legislated driving cycle. Detailed instantaneous measurements of the gaseous and solid emissions show the potential of the system to meet the CO, HC and PM mass emission requirements for Euro 5 with a significant potential of volume and Precious Metals reduction. Finally, the real-world performance of the system is demonstrated on the road for a mileage of 22,000 km showing very slow pressure drop build-up as a result of superior passive regeneration potential.
CitationKoltsakis, G., Katsaounis, D., Samaras, Z., Naumann, D. et al., "Development of Metal Foam Based Aftertreatment System on a Diesel Passenger Car," SAE Technical Paper 2008-01-0619, 2008, https://doi.org/10.4271/2008-01-0619.
- Watabe Y., Irako K., Miyajima T., Yoshimoto T., Murakami Y., “Trapless Trap - A Catalytic Combustion System of Diesel Particulates Using Ceramic Foam”, SAE 830082, 1983.
- Tutko J. J., Lestz S. S., Brockmeyer J. W., Dore J. E., “Feasibility of Ceramic Foam as a Diesel Particulate Trap”, SAE paper 840073, 1984.
- Kiyota Y., Tsuji K., Kume S., Nakayama O., “Development of Diesel Particulate Trap Oxidizer System”, SAE paper 860294, 1986.
- Mizrah T., Maurer A., Gauckler L., Gabathuler J.-P., „Open-Pore Ceramic Foam as Diesel Particulate Filter”, SAE paper 890172, 1989.
- Gabathuler J.-P., Mizrah T., Eckert L., Fischer A., Kaeser P., Maurer A., „New Developments of Ceramic Foam as a Diesel Particulate Filter”, SAE paper 910325, 1991.
- Saracco G., Audinet M., Debenedetti M., Webster D., Michelin J., Montintin J., Makkee M., Stamatelos A., „Catalytic Trap for Diesel Particulate Control - CATATRAP”, European Automotive Congress 1999, Barcelona, Spain
- Boretto G., Debenedetti M., “Innovative Materials and Catalysts for Diesel Particulate Control”, Global Powertrain Congress, Detroit, 2001.
- Ambrogio M., Saracco G., Specchia V., “Combining filtration and Catalytic Combustion in Particulate Traps for Diesel Exhaust Treatment”, Chemical Engineering Science 56 (2001) 1613-1621.
- Setiabudi A., Makkee M., Moulijn A., „An Optimal Usage of NOx in a Combined Pt/Ceramic Foam and a Wall-Flow Monolith for an Effective NOx-Assisted Diesel Soot Oxidation”, SAE paper 2003-01-0379, 2003.
- Ciambelli P., Palma V., Russo P., Vaccaro S., “Deep Filtration and Catalytic Oxidation: an Effective Way for Soot Removal”, Catalysis Today 73 (2002) 363-370.
- Cheng S., „Rolling Regeneration Trap for Diesel Particulate Control”, SAE paper 2003-01-3178, 2003.
- Ciambelli P., Palma V., Russo P., Vaccaro S., “Issues on Soot Removal from Exhaust Gases by Means of Radial Flow Ceramic Traps”, Chemical Engineering Science 60 (2005) 1619-1627.
- Koltsakis G., Katsaounis D., Samaras Z., Naumann D., Saberi, S., Boehm A., “Filtration and Regeneration Performance of a Catalyzed Metal Foam Particulate Filter”, SAE paper 2006-01-1524, 2006.
- Koltsakis G., Katsaounis D., Markomanolakis I., Samaras Z., Naumann D., Saberi, S., Boehm A., “Design and Application of Catalyzed Metal Foam Particulate Filters”, SAE paper 2006-01-3284, 2006.
- Koltsakis G., Katsaounis D., Markomanolakis I., Samaras Z., Naumann D., Saberi, S., Boehm A., “Metal Foam Substrate for DOC and DPF Application”, SAE Transactions, Journal of Fuels and Lubricants (SAE paper 2007-01-0659), 2007.
- Pontikakis G. N., Koltsakis G.C., Stamatelos A. M.: ‘Dynamic Filtration Modeling in Foam Filters for Diesel Exhaust’ Chemical Engineering Communications, 2001, Vol. 188, pp. 21-46
- Axifoam User's Guide, Exothermia, 2007.
- Hossfeld C., Ranalli M., “Catalyst Concept for Reducing the Soot Filter Volume”, MTZ worldwide Ausgabe Nr.: 2006-09, 2006
- Andersson, J, Clarke, D. (2004). UN-GRPE PMP Phase 3: Inter-laboratory Correlation Exercise: Framework and Laboratory Guide.