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Challenges and Solutions to Meeting Eu VII Particle Number Requirements during Aggressive Field Operation
Technical Paper
2023-01-0386
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The heavy duty (HD) Eu VII regulations, going into effect starting 2027, has aggressive particle number (PN) emissions limits under extended operating conditions compared to existing Eu VI framework. In addition to the proposed hot-start PN limit of 2.0E+11 #/kWh, which is a >65% reduction vs. Eu VI E, the particle size cut-off is being extended from 23nm+ to 10nm+ while also including nearly all field operating conditions such as regeneration events, wider ambient boundaries etc. The tighter limits coupled with a work-based window approach to evaluate emissions is driving the need for the next generation of ultra-high filtration efficiency (FE), diesel particulate filter (DPF) technologies. The current study evaluates the FE performance of different DPF solutions under development, over a range of challenging on-road conditions characterized by frequent high temperature events which are not actively triggered. The combination of higher temperatures and NOx to Soot ratios (NSR) is expected to lead to partially regenerated DPF operation increasing the likelihood of high PN slip. The cycles were developed and tuned based on data from field operation of HD linehaul trucks. We demonstrate that some of the development DPF samples could maintain >99.9% filtration efficiency even during aggressive passive operation with high NSR. The results suggest that adoption of these DPF technologies can help HD vehicle manufacturers meet the extremely stringent Eu VII PN requirements under the most challenging field operating conditions.
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Viswanathan, S., He, S., Reddy, V., and Sadek, G., "Challenges and Solutions to Meeting Eu VII Particle Number Requirements during Aggressive Field Operation," SAE Technical Paper 2023-01-0386, 2023, https://doi.org/10.4271/2023-01-0386.Also In
References
- Samaras , Z. , Hausberger , S. , and Mellios , G.
- Samaras , Z.C. et al. 2022 https://doi.org/10.4271/2022-37-0032
- Ohara , E. et al. Filtration Behavior of Diesel Particulate Filters (1) SAE Technical Paper 2007-01-0921 2007 10.4271/2007-01-0921
- Merkel , G.A. , Beall , D.M. , Hickman , D.L. , and Vernacotola , M.J. Effects of Microstructure and Cell Geometry on Performance of Cordierite Diesel Particulate Filters SAE Technical Paper 2001-01-0193 2001 https://doi.org/10.4271/2001-01-0193
- Kitagawa , J. , Asami , S. , Uehara , K. , and Hijikata , T. Improvement of Pore Size Distribution of Wall Flow Type Diesel Particulate Filter SAE Technical Paper 920144 1992 https://doi.org/10.4271/920144
- Murtagh , M.J. , Sherwood , D.L. , and Socha , L.S. Jr. Development of a Diesel Particulate Filter Composition and Its Effect on Thermal Durability and Filtration Performance SAE Technical Paper 940235 1994 https://doi.org/10.4271/940235
- Mamakos , A. et al. Evaluation of Advanced Diesel Particulate Filter Concepts for Post Euro VI Heavy-Duty Diesel Applications Atmosphere 13 10 2022 1682
- Giechaskiel , B.
- Book , E.K. , Snow , R. , Long , T. , Fang , T. et al. Temperature Effects on Particulate Emissions from DPF-Equipped Diesel Trucks Operating on Conventional and Biodiesel Fuels Journal of the Air & Waste Management Association 65 6 2015 751 758 10.1080/10962247.2014.984817
- 2018
- Konstandopoulos , A. and Johnson , J. Wall-Flow Diesel Particulate Filters-Their Pressure Drop and Collection Efficiency SAE Technical Paper 890405 1989 https://doi.org/10.4271/890405
- Konstandopoulos , A.G. , Kostoglou , M. , Skaperdas , E. , Papaioannou , E. et al. Fundamental Studies of Diesel Particulate Filters:Transient Loading, Regeneration and Aging SAE Technical Paper 2000-01-1016 2000 https://doi.org/10.4271/2000-01-1016
- George , S. , He , S. , and Heibel , A.K.-E. 2013
- Mahr , B. Future and Potential of Diesel Injection Systems Thermo-and Fluid Dynamic Processes in Diesel Engines 2 Springer 2004 3 17
- Moser , F.X. Lowest Engine-out Emission as the Key to the Future of the Heavy Duty Diesel Engine-New Development Result JSAE Annual Congress Proceedings 2005
- Badshah , H. , Posada , F. , and Muncrief , R. 2019
- Sharp , C. , Webb , C.C. , Yoon , S. , Carter , M. et al. Achieving Ultra Low NOx Emissions Levels with a 2017 Heavy-Duty On-Highway TC Diesel Engine-Comparison of Advanced Technology Approaches SAE Int. J. Engines 10 4 2017 1722 1735 https://doi.org/10.4271/2017-01-0956
- Khan , M.Y. et al. 2021 https://doi.org/10.4271/2021-01-5024
- Khalek , I.A. , Blanks , M.G. , Merritt , P.M. , and Zielinska , B. Regulated and Unregulated Emissions from Modern 2010 Emissions-Compliant Heavy-Duty On-Highway Diesel Engines Journal of the Air & Waste Management Association 65 8 2015 987 1001
- Viswanathan , S. , George , S. , Govindareddy , M. , and Heibel , A. Advanced Diesel Particulate Filter Technologies for Next Generation Exhaust Aftertreatment Systems SAE Technical Paper 2020-01-1434 2020 https://doi.org/10.4271/2020-01-1434