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Achieving SULEV30 Regulation Requirement with Three-Way Catalyst on High Porosity Substrate while Reducing Platinum Group Metal Loading
Technical Paper
2022-01-0543
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Fleet average SULEV30 emissions over FTP-75 must be met under full implementation of US Tier 3/LEV III emission regulation in 2025. The majority of SULEV30 certified 2021 model year vehicles are equipped with ≤ 2L displacement engines and some models adopt hybrid powertrain systems. Pickup trucks account for > 20% of passenger vehicles in the US. They could represent a quick route to meet fleet average SULEV30 targets. The newest pickup truck models are typically ULEV50 or ULEV70 certified. To reach SULEV30 or lower emission category, total tailpipe emissions must be reduced by more than 40%. Improvement of cold start emission is essential because over 70% of regulated emission is emitted during the first 60 seconds of a drive cycle with current engine and aftertreatment technology. High porosity (HP) ceramic substrate is designed to reduce thermal mass and time required to reach three-way catalyst (TWC) active temperature compared to conventional ceramic substrates. The benefit of HP substrate has been evaluated by engine bench and vehicle dynamometer tests with MY2020 SULEV70 certified pickup truck equipped with 5.3L gasoline engine. The result shows that HP TWC meets SULEV30 requirement with engineering margin. The improvement from conventional TWC is up to 30% in tailpipe emission after full useful life aging. In addition, HP TWC with reduced platinum group metal (PGM) loading achieves SULEV30 requirements; HP TWC technology could be used for cost-saving measures. Furthermore, next generation HP TWC development status is included at the end of this paper.
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Authors
- Tsuyoshi Asako - NGK Automotive Ceramics USA Inc.
- Daiki Saito - Cataler North America
- Tetsuhiro Hirao - Cataler North America
- Emily Popp - Cataler North America
- Mitsuyoshi Okada - Cataler North America
- Atsushi Kaneda - NGK Automotive Ceramics USA Inc.
- Akifumi Kawakami - NGK Automotive Ceramics USA Inc.
- Etsuji Ohara - NGK Insulators Ltd.
- Kentaro sugimoto - NGK Insulators Ltd.
Topic
Citation
Asako, T., Saito, D., Hirao, T., Popp, E. et al., "Achieving SULEV30 Regulation Requirement with Three-Way Catalyst on High Porosity Substrate while Reducing Platinum Group Metal Loading," SAE Technical Paper 2022-01-0543, 2022, https://doi.org/10.4271/2022-01-0543.Also In
References
- https://www.epa.gov/regulations-emissions-vehicles-and-engines/regulations-onroad-vehicles-and-engines
- Bassett , M. , Vogler , C. , Hall , J. , Taylor , J. et al. Analysis of the Hardware Requirements for a Heavily Downsized Gasoline Engine Capable of Whole Map Lambda 1 Operation SAE Technical Paper 2018-01-0975 2018 https://doi.org/10.4271/2018-01-0975
- Stuhldreher , M. , Kargul , J. , Barba , D. , McDonald , J. et al. Benchmarking a 2016 Honda Civic 1.5-Liter L15B7 Turbocharged Engine and Evaluating the Future Efficiency Potential of Turbocharged Engines SAE Int. J. Engines 11 6 2018 1273 1305 https://doi.org/10.4271/2018-01-0319
- Lee , B. , Oh , H. , Han , S. , Woo , S. et al. Development of High Efficiency Gasoline Engine with Thermal Efficiency over 42% SAE Technical Paper 2017-01-2229 2017 https://doi.org/10.4271/2017-01-2229
- 2020 https://www.delphi.com/sites/default/files/202004/DELPHI%20booklet%20emission%20passenger%20cars%202020%20online%20complet.pdf
- Theis , J. , Getsoian , A. , and Lambert , C. The Development of Low Temperature Three-Way Catalysts for High Efficiency Gasoline Engines of the Future SAE Int. J. Fuels Lubr 10 2 2017 10.4271/2017-01-0918
- Khivantsev , K. , Jaegers , N.R. , Kovarik , L. , Vargas , C.G. , et al. Thermally Stable and Highly Active Single-Atom Rhodium on Ceria for NO Abatement under Dry and Industrially Relevant Conditions Presented at the 2020 CLEERS Virtual Workshop Sep. 14-17, 2020
- Bargman , B. , Jang , S. , Kramer , J. , Soliman , I. et al. Effects of Electrically Preheating Catalysts on Reducing High-Power Cold-Start Emissions SAE Technical Paper 2021-01-0572 2021 https://doi.org/10.4271/2021-01-0572
- Nakanishi , Y. , Suehiro , Y. , Hashimoto , M. , Narishige , T. et al. Development of Low Temperature Active Three Way Catalyst SAE Technical Paper 2019-01-1293 2019 https://doi.org/10.4271/2019-01-1293
- Otsuka , S. , Suehiro , Y. , Koyama , H. , Matsuzono , Y. et al. Development of a Super-Light Substrate for LEV III/Tier3 Emission Regulation SAE Technical Paper 2015-01-1001 2015 http://doi.org/10.4271/2015-01-1001
- Craig , A. , Warkins , J. , Aravelli , K. , Moser , D. et al. Low Cost LEV-III, Tier-III Emission Solutions with Particulate Control using Advanced Catalysts and Substrates SAE Int. J. Engines 9 2 2016 http://doi.org/10.4271/2016-01-0925
- Warkins , J. , Tao , T. , Shen , M. , and Lyu , S. Application of Low-Mass Corning® FLORA® Substrates for Cold-Start Emissions Reduction to Meet Upcoming LEV III SULEV30 Regulation Requirement SAE Technical Paper 2020-01-0652 2020 http://doi.org/10.4271/2020-01-0652
- Tanner , C. , Twiggs , K. , Tao , T. , Bronfenbrenner , D. et al. High Porosity Substrates for Fast-Light-Off Applications SAE Technical Paper 2015-01-1009 2015 http://doi.org/10.4271/2015-01-1009
- Socha , L.S. , Day , J.P. , and Barnett , E.H. Impact of Catalyst Support Design Parameters on FTP Emissions SAE Technical Paper 892041 1989 https://doi.org/10.4271/892041
- Ball , D. , Negohosian , C. , Ross , D. , Moser , D. et al. Comparison of Cold Start Calibrations, Vehicle Hardware and Catalyst Architecture of 4-Cylinder Turbocharged Vehicles SAE Int. J. Engines 6 4 2013 https://doi.org/10.4271/2013-01-2593
- http://ww2.arb.ca.gov/sites/default/files/2021-05/acc2_workshop_slides_may062021_ac.pdf