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Thermal Durability of Wall-Flow Ceramic Diesel Particulate Filters
Technical Paper
2001-01-0190
ISSN: 0148-7191, e-ISSN: 2688-3627
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Event:
SAE 2001 World Congress
Language:
English
Abstract
The maximum use temperature of a diesel particulate filter is often thought to be limited only by the melting point of the filter material itself. This paper suggests that the maximum practical use temperature for filters is limited not by the intrinsic filter melting temperature, but by the temperature at which the metal oxide ash collected from the engine exhaust sinters and adheres to the filter wall, or the temperature at which the filter undergoes eutectic melting by reaction with the ash. Ash sintering and adherence without reaction with the filter material may result in loss of filter permeability and a permanent pressure drop increase. Chemical reactions between the ash and the filter can result either in pinholes through the walls, which compromise filtration efficiency, or glazing on the surface of the walls, which increases back pressure. These metal oxide deposits that comprise the ash are derived from engine wear, oil additives, fuel additives, and corrosion of the manifold and other exhaust system components.
Excessive temperatures can be avoided by employing sophisticated regeneration controls and/or by employing filters that have a high volumetric heat capacity and/or a high thermal conductivity. Several new monolithic DPFs are under development that exhibit a unique combination of high thermal shock resistance and high volumetric heat capacity. Temperatures generated within these filters during uncontrolled regenerations are substantially lower than those observed for other ceramic oxide filters, resulting in little or no reaction between the filter and ash under severe operating conditions.
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Citation
Merkel, G., Cutler, W., and Warren, C., "Thermal Durability of Wall-Flow Ceramic Diesel Particulate Filters," SAE Technical Paper 2001-01-0190, 2001, https://doi.org/10.4271/2001-01-0190.Also In
References
- MacDonald, J.S. Simon, G.M. “Development of a Particulate Trap System for a Heavy-Duty Diesel Engine,” SAE Paper No. 880006 1988
- Kitagawa, J. Hijikata, T. Yamada, S. “Electric Heating Regeneration of Large Wall-Flow Type DPF,” SAE Paper No. 910136 1991
- Gulati, S.T. Lambert, D.W. Hoffman, M.B. Tuteja, A.D. “Thermal Durability of a Ceramic Wall-Flow Diesel Filter for Light Duty Vehicles,” SAE Paper No. 920143 1992
- Okazoe, H. Yamada, T. Niimura, K. Watanabe, Y. Itoh, A. Shimato, K. Komori, T. “Study of SiC Application to Diesel Particulate Filter (Part 2): Engine Test Results,” SAE Paper No. 930361 1993
- Murtagh, M.J. Sherwood, D.L. Socha, L.S. Jr., “Development of a Diesel Particulate Filter Composition and Its Effect on Thermal Durability and Filtration Performance,” SAE Paper No. 940235 1994
- Okazoe, H. Shimizu, K. Watanabe, Y. Santiago, E. Kugland, P. Ruth, W. “Development of a Full-Flow Burner Regeneration Type Diesel Particulate Filter Using SiC Honeycomb,” SAE Paper No. 960130 1996
- Tan, J.C. Opris, C.N. Baumgard, K.J. Johnson, J.H. “A Study of the Regeneration Process in Diesel Particulate Traps Using a Copper Fuel Additive,” SAE Paper No. 960136 1996
- Park, D.S. Kim, J.U. Cho, H. Kim, E.S. “Considerations on the Temperature Distribution and Gradient in the Filter During Regeneration in Burner Type Diesel Particulate Trap System (II),” SAE Paper No. 980188 1998
- Kitagawa, J. Asami, S. Uehara, K Hijikata, T. “Improvement of Pore Size Distribution of Wall Flow Type Diesel Particulate Filter,” SAE Paper No. 920144 1992
- Høj, J.W. Sorenson, S.C. Stobbe, P. “Thermal Loading in SiC Particulate Filters,” SAE Paper No. 950151 1995
- Ohno, K. Shimato, K. Taoka, N. Santae, H. Ninomiya, T. Komori, T. Salvat, O. “Characterization of SiC-DPF for Passenger Car,” SAE Paper No. 2000-01-0185 2000
- Hickman, D.L. “Diesel Particulate Filter Regeneration: Thermal Management Through Filter Design,” SAE Paper No. 2000-01-2847 2000
- Pattas, K.N. Samaras, Z.C. Kikidis, P.S. “Operation Characteristics of the Ceramic Diesel Particulate Trap during Forced Regeneration,” SAE Paper No. 870252 1987
- Montierith, M.R. “Fuel Additive Effect upon Diesel Particulate Filters,” SAE Paper No. 840072 1984
- Pattas, K. Samaras, Z. Sherwood, D. Umehara, K. Cantiani, C. Aguerre Chariol, O. Barthe, P. Lemaire, J. “Cordierite Filter Durability with Cerium Fuel Additive: 100,000 km of Revenue Service in Athens,” SAE Paper No. 920363 1992
- Pattas, K.N. Michalopoulou “Catalytic Activity in the Regeneration of the Ceramic Diesel Particulate Trap,” SAE Paper No. 920362 1992
- Rao, V.D.N. Cikanek, H.A. Horrocks, R.W. “Diesel Particulate Control System for Ford 1.8L Sierra Turbo-Diesel to Meet 1997-2003 Particulate Standards,” SAE Paper No. 940458 1994
- Terry, B. Richards, P. “A Method for assessing the Low Temperature Regeneration Performance of Diesel Particulate Filters and Fuel-borne Catalysts,” SAE Paper No. 2000-01-1922 2000
- Konstandopoulos, A.G. Kostoglou, M. Skaperdas, E. Papaioannou, E. Zarvalis, D. Kladopoulou “Fundamental Studies of Diesel Particulate Filters: Transient Loading, Regeneration and Aging,” SAE Paper No. 2000-01-1016 2000
- Pattas, K. Samaras, Z. Sherwood, D. Umehara, K. Cantiani, C. Aguerre Chariol, O. Barthe, Ph. Lemaire, J. “Cordierite Filter Durability with Cerium Fuel Additive: 100,000 km of Revenue Service in Athens,” SAE Paper No. 920363 1992
- Garner, C.P. Dent, J.C. “A Thermal Regeneration Model for Monolithic and Fibrous Diesel Particulate Traps,” SAE Paper No. 880007 1988
- Jørgensen, M.W. Sorenson, S.C. “A 2-Dimensional Simulation Model for a Diesel Particulate Filter,” SAE Paper No. 970471 1997
- Opris, C.N. Johnson, J.H. “A 2-D Computational Model Describing the Heat Transfer, reaction kinetics and Regeneration Characteristics of a Ceramic Diesel Particulate Trap,” SAE Paper No. 980546 1998
- Cutler W.A. Merkel G.A. “A New High-Temperature Ceramic Material for Diesel Particulate Filter Applications,” SAE Paper 2000-01-2844 2000
- Merkel, G.A. Beali, D.M. Hickman, D.L. Vernacotola, M.J. “Effects of Microstructure and Cell Geometry on Performance of Cordierite Diesel Particulate Filters,” SAE Paper No. 01FL-13 2001
- Gantawar, A.K. Opris, C.N. Johnson, J.H. “A Study of the Regeneration Characteristics of Silicon Carbide and Cordierite Diesel Particulate Filters Using a Copper Fuel Additive,” SAE Paper No. 970187 1997
- Michelin, J. Figueras, B. Bouly, C. Maret, D. “Optimized Diesel Particulate Filter System for Diesel Exhaust Aftertreatment,” SAE Paper No. 2000-01-0475 2000