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Holistic Engine and EAT Development of Low NOX and CO2 Concepts for HD Diesel Engine Applications
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 15, 2020 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
The latest legislative tendencies for on-highway heavy duty vehicles in the United States such as the feasibility assessment of low NOX standards of CARB or EPA’s memorandum forecast further tightening of the NOX emissions limits. In addition, the GHG Phase 2 legislation and also phased-in regulations in the EU enforce a continuous reduction in CO2 emissions resp. fuel consumption. In order to meet such low NOX emission limits, a rapid heat-up of the exhaust after-treatment system (EATS) is inevitable. However, the required thermal management results in increased fuel consumption, i.e. CO2 emissions as shown in numerous previous works also by the authors. A NOX-CO2 trade-off for cumulative cycle emissions can be observed, which can be optimized by using more advance technologies on the engine and/or on the EATS side.
In the present study a systematic investigation is carried out by means of model-based holistic approach targeting the definition of a high efficiency engine layout and optimal thermal management calibration. First, the potentials of combustion process optimization (compression ratio, peak firing pressure) and of turbocharger efficiency increase are quantified aiming engine efficiency increase. Afterwards, using holistic engine and EAT concept development approach, conventional and advanced EATS layouts are tested. The advanced EATS layout consist of a close-coupled dual-stage SCR system. In order to explore the benefits of each layouts, the engine heat-up calibrations are varied and the resulting, cumulative NOX-CO2 emissions of the investigated cycle are compared and evaluated. Multiple improvement measures for both engine and EAT system are discussed and an outlook of future powertrain concepts is given.
CitationKovacs, D., Mennig, M., Rezaei, R., and Bertram, C., "Holistic Engine and EAT Development of Low NOX and CO2 Concepts for HD Diesel Engine Applications," SAE Technical Paper 2020-01-2092, 2020, https://doi.org/10.4271/2020-01-2092.
Data Sets - Support Documents
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- California Air Resources Board, “Proposed Heavy-Duty Engine Standards”, Public workshop, Diamond Bar, CA, September 2019 https://ww3.arb.ca.gov/msprog/hdlownox/files/workgroup_20190926/staff/01_hde_standards.pdf
- Nelson Brian, (EPA), “Journey to Lower NOx Limits through EPA’s Cleaner Trucks Initiative”, 12th Integer Emission Summit, November 2019 https://www.epa.gov/sites/production/files/2020-01/documents/cti-journey-to-lower-nox-2019-11-12.pdf
- EPA, “Memorandum in Response to Petition for Rulemaking to Adopt Ultra-Low NOx Standards for On-Highway Heavy- Duty Trucks and Engines,” United States Environmental Protection Agency, 2016 https://www.epa.gov/sites/production/files/2016-12/documents/nox-memorandumnox-petition-response-2016-12-20.pdf
- Sharp, C., Webb, C., Neely, G., Carter, M. et al., “Achieving Ultra Low NOX Emissions Levels with a 2017 Heavy-Duty on-Highway TC Diesel Engine and an Advanced Technology Emissions System-Thermal Management Strategies,” SAE Int. J. Engines 10(4):1697-1712, 2017, doi:10.4271/2017-01-0954.
- Sharp, C., Webb, 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):1722-1735, 2017, doi:10.4271/2017-01-0956.
- Sharp, C., Webb, C., Neely, G., Sarlashkar, J. et al., “Achieving Ultra Low NOX Emissions Levels with a 2017 Heavy-Duty on-Highway TC Diesel Engine and an Advanced Technology Emissions System-NOX Management Strategies,” SAE Int. J. Engines 10(4):1736-1748, 2017, doi:10.4271/2017-01-0958.
- Rauch, H., Kovács, D., Rezaei, R., Strots, V., Kah, S. and Wille, A., “Two-Stage SCR System for Commercial Vehicle Applications”, in 7th International MinNOx Conference, Berlin, Germany, 2018
- Kovacs, D., Rauch, H., Rezaei, R., Huang, Y. et al., “Modeling Heavy-Duty Engine Thermal Management Technologies to Meet Future Cold Start Requirements,” SAE Technical Paper 2019-01-0731, 2019. https://doi.org/10.4271/2019-01-0731.
- Rauch, H., Rezaei, R., Weber, M., Kovács, D. et al., “Holistic Development of Future Low NOx Emission Concepts for Heavy-Duty Applications,” SAE Technical Paper 2018-01-1700, 2018. https://doi.org/10.4271/2018-01-1700.
- GT-SUITE, “Engine Performance Application Manual” by Gamma Technologies, Version 2020
- Steinparzer, F., et al., 2020. “The Technical Concept of the New BMW 6-Cylinder 2nd Generation Modular Diesel Engines”, in Proceedings of the 41st International Vienna Motor Symposium, Vienna, Austria, 22-24 April 2020
- Alt, M., et al., 2020. “The Multi Energy Platform of the Opel Corsa: Pure Electric, Gasoline or Diesel Propulsion”, in Proceedings of the 41st International Vienna Motor Symposium, Vienna, Austria, 22-24 April 2020
- Helbing, C., et al., 2020a. “Volkswagen's TDI-Engines for Euro 6d - Clean Efficiency for Modern Mobility”, in Proceedings of the 41st International Vienna Motor Symposium, Vienna, Austria, 22-24 April 2020
- Weberbauer, F., Rauscher, M., Kulzer, A. et al., “Generally Applicate Split of Losses for New Combustion Concepts,” MTZ Worldwide 66:17-19, 2005. https://doi.org/10.1007/BF03227736.
- Glonegger P., Weiskirch C., Erath P. and Cadle R., “MAN D26 Two Stage Development, Heavy Duty Commercial Engines Optimized with Respect on Low Fuel Consumption and Emissions,” in 21st Supercharging Conference, Dresden, 2016
- Maier C., “Theoretische und experimentelle Untersuchung von Energierekuperationssystemen in Verbindung mit zweistufigen thermischen Verbundverfahren bei Verbrennungskraftmaschinenanlagen,” Dissertation, Technical University Dresden, 2015.
- Nova, I., and Troconi, E., “Urea-SCR Technology for deNOx After Treatment of Diesel Exhausts,” . In: Fundamental and Applied Catalysis, (New York, Springer Science+Business Media, USA, 2014, 716 pages) 978-1-4899-8071-7.
- Budziankou, U., Börnhorst, M., Kuntz, C. et al., “Deposit Formation from Urea Injection: a Comprehensive Modeling Approach. Emiss,” Control Sci. Technol, 2020, https://doi.org/10.1007/s40825-020-00159-x