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On the Effectiveness and Economy of Operation of ART-EGR Systems that Reduce Diesel Emissions
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This manuscript describes recent design developments and extensive testing of ART-EGR systems (Aerodynamically Regenerated Traps with Exhaust Gas Recirculation). Such systems have been proven to drastically reduce the emissions of particulates (by up to 99%), NOx (by up to 50%) and unburned volatile hydrocarbons (typically by 30-70%). Such emission reductions, however, are associated with increased fuel consumption. In this work extensive design modifications were implemented to minimize the fuel consumption penalty caused by the ART-EGR system.
All plumbing and valving gear has been redesigned to maximize the flow of regeneration air through the primary filter monolith. An expansion chamber integrated with the ART system, downstream of the primary filter, increased the flow of the regeneration air. At the exit of the expansion chamber, a secondary filter/burner retained and oxidized the soot. The secondary filter/burner is a small silicon carbide monolith, which is electrically heated. Tests conducted with computerized data acquisition and a completely automated ART-EGR system demonstrated the system's impact on the performance and fuel efficiency of the test vehicle. This work resulted in an optimized aerodynamic regeneration system that reduced main filter back pressures to levels half of those previously presented. EGR at low loads caused no significant increase in fuel consumption, however, at higher loads EGR inflicted a large loss. Tests with a larger electrically heated burner resulted in successful soot burning and main filter regeneration with a notable fuel economy penalty. Some alternate burning systems are considered.
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Larson, C. and Levendis, Y., "On the Effectiveness and Economy of Operation of ART-EGR Systems that Reduce Diesel Emissions," SAE Technical Paper 980537, 1998, https://doi.org/10.4271/980537.Also In
References
- “Diesel Cars Come Clean” Mechanical Engineering Magazine 52 August 1997
- Bagley, S.T. Baumgard, K.J. Gratz, L.D. Johnson, J.H. Leddy, D.G. “Characterization of Fuel and Aftertreatment Device Effects on Diesel Emissions.” Health Effects Institute Research Report 76 September 1996
- Walsh, M.P. “Global Trends in Diesel Emissions Control A 1997 Update” SAE Paper 970179 1997
- Howitt, J.S. Montierth, M.R. “Cellular Ceramic Diesel Particulate Filter.” SAE Paper 810114 1981
- Kitagawa, J. Asami, S. Uehara, K Hijikata, T. “Improvement of Pore Size Distribution of Wall Flow Type Diesel Particulate Filter.” SAE Paper 920144 1992
- Mizrah, T. Mauer, A. Gauckler, L. Gabathuler, J.P. “Open Pore Ceramic Foam as Diesel Particulate Filter.” SAE Paper 890172 1989
- Hardenberg, H.O. “Urban Bus Application of a Ceramic Fiber Coil Particulate Trap.” SAE Paper 870011 1987
- Mayer, A. Buck, A. “Knitted Ceramic Fibers - A New Concept for Particulate Traps.” SAE Paper 920146 1992
- Bloom, R.L. “The Development of Fiber Wound Diesel Particulate Filter Cartridges.” SAE Paper 950152 1995
- Bloom, R.L. “Fiber Wound Diesel Particulate Filter Durability Experience with Metal Based Additives.” SAE Paper 970180 1997
- Itoh, A. Shimato, K. Komori, T. Okazoe, H. Yamada, T. Nimura, K. Komori, T. “Study of SiC Application to Diesel Particulate Filter (Part 1): Material Development.” SAE paper 930360 1993
- Hoj, J.W. Sorenson, S.C. “Thermal Loading in SiC Particle Filters.” SAE Paper 950151 1995
- Oey F. Mehta S. Levendis Y.A. “Diesel Vehicle Application of an Aerodynamically Regenerated Trap and EGR System.” SAE paper 950370 1995
- Mehta S. Levendis Y.A. Adiletta, J.G. “A Thermally Regenerated Diesel particulate Trap Using High Temperature Glass Fiber Filters.” SAE paper 950737 1995
- Ban, S lhara, T. Okamoto S. “Development of Porous Metal for Diesel Particulate Filter.” SAE Paper 950739 1995
- Levendis, Y.A. McInerney, K. Panagiotou, T. “Evaluation of a Self-Cleaning System for Diesel Engines.” SAE paper 910333 1991
- Pavlatos 1. K. Levendis Y. A. “Recent Development on the N.U. Rotating Self Cleaning Particulate Trap -Retention of PAC's and HC Emissions” SAE paper 920568 1992
- Khalil N. Levendis Y. A. “Development of New Diesel Particulate Control System with Wall Flow Filter with Reversed Cleaning Regeneration.” SAE paper 920567 1992
- Mehta S. Levendis Y. A. Khalil N. “On-Road Testing of a Reverse Air-Flow Cleaning, Soot-Oxidizing Diesel Particulate System.” SAE paper 930368 1993
- Mehta S. Oey, F. Sumbung, C. Li, C. Levendis Y. A. SAE paper 940461 1994
- Kim S.H. Levendis Y. A. “Design of a Diesel Particulate Trap-Incinerator with Simultaneous Filtration and Compressed-Air Regeneration (CAR).” SAE paper 930367 1993
- Khalil N. Levendis Y.A. Abrams R.F. “Reducing Diesel Particulate and NOx Emissions via Filtration and Particle-Free Exhaust Gas Recirculation.” SAE paper 950736 1995
- Mizuno, H. Kitagawa, J. Hijikata, T. “Effect of Cell Structure on Regeneration Failure of Ceramic Honeycomb Diesel Particulate Filters.” SAE paper 870010 1987
- Kitagawa, J. Hijicata, T. Makino, M. “Effects of DPF Volume on Thermal Shock Failure on Large Volume DPF.” SAE paper 900113 1990
- Okazoe, H. Shimizu, K. Watanabe, Y. Sandiago, E. Kugland, P. Ruth, W. “Development of a Full-Flow Burner Regeneration Type Diesel Particulate Filter Using SiC Honeycomb.” SAE paper 960130 1996
- Levendis, Y.A. Panagiotou, T. Taslim, M.E. “Development of a Self-Cleaning Particle Trap for Diesel Engine Particulate Control.” SAE paper 900601 1990
- Caceres, J. Levendis Y. A. “An Aerodynamically-regenerated Diesel Particulate Trap coupled to an Electric Soot Incinerator with Dual Wall-Flow Filters.” SAE paper 950371 1995
- Larsen, C. Oey, F. Levendis, Y.A. “An Optimization Study on the Control of NOx and Particulate Emissions from Diesel Engines.” SAE paper 960473 1996
- Larsen, C. Levendis, Y.A. “An Integrated Diesel Engine ART-EGR System for Particulate/NO, Control Using Engine Sensory Inputs.” SAE paper 970477 1997