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A Study of the Regeneration Process in Diesel Particulate Traps Using a Copper Fuel Additive
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Abstract
The goals of this research are to understand the regeneration process in ceramic (Cordierite) monolith traps using a copper fuel additive and to investigate the various conditions that lead to trap regeneration failure. The copper additive lowers the trap regeneration temperature from approximately 500 °C to 375 °C and decreases the time necessary for regeneration. Because of these characteristics, it is important to understand the effect of the additive on regeneration when excessive particulate matter accumulation occurs in the trap.
The effects of particulate mass loading on regeneration temperatures and regeneration time were studied for both the controlled (engine operated at full load rated speed) and uncontrolled (trap regeneration initiated at full load rated speed after which the engine was cut to idle) conditions. The trap peak temperatures were higher for the uncontrolled than the controlled regeneration. The higher peak trap temperatures were predominantly controlled by the effect of the exhaust flow rates on the energy transfer processes. The total regeneration time was faster for the controlled regeneration compared to the uncontrolled regeneration. All traps passed the controlled regeneration tests having maximum temperatures less than 900 °C. During the uncontrolled regeneration tests, trap failure occurred at 135 and 139 g particulate matter loadings. The maximum temperatures were in excess of 1150 °C.
The pressure drop across the trap was modeled using the one dimensional Darcy's law which accounted for the pressure drop due to the ceramic wall and the particulate layer. The experimental results for the substrate correlate well with the empirical substrate pressure drop models available in the literature. The models also enable an estimate to be made regarding trap mass loading. These data along with the laboratory data have indicated that mass loadings greater than 110 g followed by high temperature operation and subsequent engine idling can result in trap failures during regeneration. The particulate layer permeability was calculated using the one-dimensional Darcy's equation and found to be approximately 3x10-14 m2 (an order of magnitude lower than that of the substrate).
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Tan, J., Opris, C., Baumgard, K., and Johnson, J., "A Study of the Regeneration Process in Diesel Particulate Traps Using a Copper Fuel Additive," SAE Technical Paper 960136, 1996, https://doi.org/10.4271/960136.Also In
References
- Arai M. Miyashita S. Sato K. “Development and Selection of Diesel Particulate Trap Regeneration System” SAE Paper No. 870012 1987
- Baumgard K.J. Kittleson D.B. “The Influence of a Ceramic Particle Trap on the Size Distribution of Diesel Particles” SAE Paper No. 850009 1989
- Baumgard K.J. Bickel K.L. “Development and Effectiveness of Ceramic Diesel Particle Filters” Bureau of Mines Information Circular IC9141 94 102 1987
- Baumgard K.J. Johnson J.H. “The Effect of Low Sulfur Fuel and a Ceramic Particulate Filter on Diesel Exhaust Particle Size Distributions” SAE Paper No. 920566 1992
- Bissett E.J. Shadman F. “Thermal Regeneration of Diesel-Particulate Monolitic Filters” AIChE Journal 31 1985
- Daly D.T. McKinnon D.L. Martin J.R. Pavlich D.A. “A Diesel Particulate Regeneration System Using a Copper Fuel Additive” SAE Paper No. 930131 1993
- Engler B. Koberstein E. Volker H. “Catalytically Activated Diesel Particulate Traps - New Development and Applications” SAE Paper No. 860007 1986
- Garner C.P. Dent J.C. “A Thermal Regeneration Model for Monolithic and Fibrous Diesel Particulate Traps” SAE Paper No. 880007 1988
- Gulati S.T. “Thermal Stresses in Ceramic Wall Flow Diesel Filters” SAE Paper No. 830079 1983
- Harvey G.D. Baumgard K.J. Johnson J.H. Gratz L.D. Bagley S.T. Leddy D.G. “Effects of a Ceramic Particle Trap and Copper Fuel Additive on Heavy-Duty Diesel Emissions” SAE Paper No. 942068 1994
- Howitt S. Montierth M.R. “Cellular Ceramic Diesel Particulate Filter” SAE Paper No. 810114 1981
- Kantola T.C. Bagley, S.T. Gratz, L.D. Leddy D.G. Johnson, J.H. “Influence of a Low Sulfur Fuel and a Ceramic Particle Trap on the Physical, Chemical and Biological Character of Heavy-Duty Diesel Emissions” SAE Paper No. 920565 1992
- Kitaghawa, J. Hijikata T. Makino M. “Effects of DPF Volume on Thermal Shock Failure During Regeneration” SAE paper No. 890173 1989
- Kobashi K Hayashi K. Aoki H. Kurazono K. Fujimoto M. “Regeneration Capability of Diesel Particulate Filter System Using Electric Heater” SAE Paper No. 930365 1993
- Kojetin P. Janezich F. Sura L. Tuma D. “Production Experience of a Ceramic Wall Flow Electric Regeneration Diesel Particulate Trap” SAE Paper No. 930129 1993
- Konstandopoulos A.G. Gratz L.D. Johnson J.H. Bagley S.T. Leddy D.G. “Ceramic Particulate Traps for Diesel Emissions Control - Effects of Manganese-Copper Fuel Additive” SAE Paper No. 880009 1988
- Konstandopoulos A.G. Johnson, J.H. “Wall-Flow Diesel Particulate Filters - Their Pressure Drop and Collection Efficiency” SAE Paper No. 890405 1989
- Laymac T.D. “A Study of the Controlled Regeneration Process of a Ceramic Wall-Flow Particulate Trap and its Effects on the Physical, Chemical, and Biological Character of Diesel Exhaust” Michigan Technological University Houghton, MI 1990
- Lepperhoff G. Luders H. Barthe P. Lemaire J. “Quasi-Continuous Particle Trap Regeneration by Cerium-Additives” SAE Paper No. 950369 1995
- MacDonald J.S. Simon G.M. “Development of a Particulate Trap System for a Heavy-Duty Diesel Engine” SAE Paper No. 880006 1988
- McKinnon D.L. Shephard D.A. “Diesel Particulate Filter System for a 6V-92TA Engine in Neoplan Bus” SAE Paper No. 9203645 1992
- McCabe R.W. Sinkevitch R.M. “A Laboratory Combustion Study of Diesel Particulates Containing Metal Additives” SAE Paper No. 860011 1986
- Mogaka Z.N. Wong V.W. Shahed S.M. “Performance and Regeneration Characteristics of a Cellular Ceramic Diesel Particulate Trap” SAE Paper No. 820272 1982
- Montierth M.R. “Fuel Additive Effect upon Diesel Particulate Filters” SAE Paper No. 840072 1984
- Opris C.N. Gratz L.D. Bagley S.T. Baumgard K.J. Leddy D.G. Johnson J.H. The Effects of Fuels Sulfur Concentration on Regulated and Unregulated Heavy-Duty Diesel Emissions” SAE Paper No. 930730 1993
- Oser P. Thomas U. “Particulate Control Systems for Diesel Engines Using Catalytically Coated and Uncoated Traps with Consideration of Regeneration Techniques” SAE Paper No. 830087 1983
- Otto K. Sieg M.H. Zinbo M. Bartosiewicz L. “The Oxidation of Soot Deposits from Diesel Engines” SAE Paper No. 800336 1980
- Pattas K.N. Samaras Z.C. “Computational Simulation of the Ceramic Trap Transient Operation” SAE Paper No. 890403 1989
- Pauli E. Lepperhoff G. Pischinger F. “The Description of the Regeneration Behaviour of Diesel Particulate Traps with the Aid of a Mathematical Model” SAE Paper No. 830180 1983
- Retrofit/Rebuild Requirements for 1993 and Earlier Model Year Urban Buses Public Review of a Notification of Intent to Certify Equipment 60 Fed.Reg July 13 1995
- Sachdev R. Wong, V.W. Shahed S.M. “Effect of Ash Accumulation on the Performance of Diesel Exhaust Particulate Traps” SAE Paper No. 830182 1983
- Sheidegger A.E. The Physics of Flow through Porous Media Second University of Toronto Press Toronto, Ontario 1960
- Sorenson S.C. Hoj J.W. Stobbe P. “Flow Characteristics of SiC Diesel Particulate Filter Materials” SAE Paper No. 940236 1994
- Tan J.C. “A Study of the Regeneration Process in Diesel Particulate Traps Using a Copper Fuel Additive” Michigan Technological University May 1995
- Wade W.R. WHite J.E. Florek J.J. Cikanek H.A. “Thermal and Catalytic Regeneration of Diesel Particulate Traps” SAE Paper No. 830083 1983
- Wark K. Warner C.F. Air Pollution: It's Origin and Control Second Harper and Row New York, NY 1981