This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Aftertreatment Layouts Evaluation in the Context of Euro 7 Scenarios Proposed by CLOVE Abstract
Technical Paper
2022-37-0008
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Euro 7/VII regulations are currently under discussion and are expected to be the last big regulatory step in Europe. From available documentation, it is clear the aim of further regulating the extended conditions of use which are still responsible of high emission events (e. g. cold start or altitude) as well as regulating secondary emissions such as NH3, N2O, CH4, Aldehydes (HCHO).
Even if not completely fixed yet, the EU7 limits will be challenging for internal combustion engines and even more for Diesel. Despite a consistent reduction of market share, Diesel engines are expected to remain a significant portion in certain sectors such as Heavy duty (HD) and Light-commercial vehicle (LCV) for some decades.
In order to reach the new limits being proposed, besides minimizing engine-out emissions, Diesel powertrain will need an aftertreatment system able to work at very high efficiency right after engine start and in almost every working and environmental condition.
The present work aims at evaluating different aftertreatment layouts in the context of most updated proposals issued by Consortium for ultra-low emission vehicle (CLOVE). During an extensive experimental campaign, different combustion strategies were tested on emission cycles deemed representative of European regulatory environment. Experimental engine out data were then used as input to catalysts kinetic models to build a walk towards Euro 7 CLOVE proposed limits. Starting from a Euro 6d capable aftertreatment layout featuring a close-coupled DOC (Diesel Oxidation Catalyst) and SCRoF (Selective Catalytic Reduction on Filter) and underfloor SCR (Selective Catalytic Reduction) and AOC (Ammonia Oxidation Catalyst), different aftertreatment layouts were evaluated, including a first catalyst with NOx storage function and different electrical heating options (both 12V and 48V).
Results of simulation activity will be presented, and most promising layouts will be discussed both in terms of performance and in terms of ease of implementation on vehicle.
Recommended Content
Authors
Topic
Citation
Previtero, G., Ciaravino, C., Ferreri, P., Pozzi, C. et al., "Aftertreatment Layouts Evaluation in the Context of Euro 7 Scenarios Proposed by CLOVE Abstract," SAE Technical Paper 2022-37-0008, 2022, https://doi.org/10.4271/2022-37-0008.Also In
References
- Commission Directive 77/102/EEC of 30 November 1976 Adapting to Technical Progress Council Directive 70/220/EEC of 20 March 1970 on the Approximation of the Laws of the Member States Relating to Measures to be Taken against Air Pollution by Gases From Positive-Ignition Engines of Motor Vehicles Off. J. Eur. Union 32 1977 32 39
- Consortium for Ultra-Low Emission Vehicle 2020
- Consortium for Ultra-Low Emission Vehicle 2021
- The International Council for Emission Standard 2021 https://aeriseurope.com/wp-content/uploads/2021/03/AERIS-Air-Quality-Report-Euro-7-Impact-Assessment.pdf
- White , L. , Miles , A. , Boocock , C. , Cooper , J. et al. 2021 https://theicct.org/sites/default/files/eu-commission-euro-7-and-VI-may2021.pdf
- SIA Powertrain & Energy 2020
- Martinovic , F. , Castoldi , L. , and Deorsola , F.A. Aftertreatment Technologies for Diesel Engines: An Overview of the Combined Systems Catalysts 11 2021 653 https://doi.org/10.3390/catal11060653
- Chilumukuru , K. , Gupta , A. , Ruth , M. , Cunningham , M. et al. Aftertreatment Architecture and Control Methodologies for Future Light Duty Diesel Emission Regulations SAE Int. J. Engines 10 4 2017 1580 1587 https://doi.org/10.4271/2017-01-0911
- Selleri , T. , Melas , A.D. , Joshi , A. , Manara , D. et al. An Overview of Lean Exhaust deNOx Aftertreatment Technologies and NOx Emission Regulations in the European Union Catalysts 11 2021 404 https://doi.org/10.3390/catal1103040
- Su , C. , Brault , J. , Munnannur , A. , Liu , Z.G. et al. Model-Based Approaches in Developing an Advanced Aftertreatment System: An Overview SAE Int. J. Advances & Curr. Prac. in Mobility 1 1 2019 201 214 https://doi.org/10.4271/2019-01-0026
- Joshi , A. Review of Vehicle Engine Efficiency and Emissions SAE Int. J. Adv. & Curr. Prac. in Mobility 2 5 2020 2479 2507 https://doi.org/10.4271/2020-01-0352
- Auld , A. , Ward , A. , Mustafa , K. , and Hansen , B. Assessment of Light Duty Diesel After-Treatment Technology Targeting Beyond Euro 6d Emissions Levels SAE Int. J. Engines 10 4 2017 1795 1807 https://doi.org/10.4271/2017-01-0978
- Gao , J. , Tian , G. , and Sorniotti , A. On the Emission Reduction through the Application of an Electrically Heated Catalyst to a Diesel Vehicle Energy Sci Eng. 7 2019 2383 2397 https://doi.org/10.1002/ese3.416
- 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 2017 10.4271/2017-01-0958
- 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 2017 10.4271/2017-01-0954
- Pozzi , C. , Previtero , G. , Cusanno , L. , Mital , R. Comparison of DOC vs. NOx Storage Based Aftertreatment Architectures as Related to Pollutants Conversion Efficiency and GHG Impact 9th International Engine Congress 2022
- Sampara , C. , Bissett , E. , and Chmielewski , M. Global Kinetics for a Commercial Diesel Oxidation Catalyst with Two Exhaust Hydrocarbons Industrial & Engineering Chemistry Research - IND ENG CHEM RES. 47 2007 https://doi.org/10.1021/ie070813x
- Sampara , C. , Bissett , E. , and Assanis , D. Hydrocarbon Storage Modeling for Diesel Oxidation Catalysts Chemical Engineering Science 63 2008 5179 https://doi.org/10.1016/j.ces.2008.06.021
- Khosravi , M. , Abedi , A. , Hayes , R. , Epling , W. et al. Kinetic Modelling of Pt and Pt: Pd Diesel Oxidation Catalysts Applied Catalysis B: Environmental 154-155 2014 16 26 https://doi.org/10.1016/j.apcatb.2014.02.001
- Pereda-Ayo , B. , and González-Velasco , J.R. NOx Storage and Reduction for Diesel Engine Exhaust Aftertreatment Diesel Engine - Combustion, Emissions and Condition Monitoring IntechOpen 2013 https://doi.org/10.5772/55729
- Epling , W. , Campbell , L. , Yezerets , A. , Currier , N. et al. Overview of the Fundamental Reactions and Degradation Mechanisms of NOx Storage/Reduction Catalysts Catalysis Reviews-science and Engineering - CATAL REV-SCI ENG. 46 2007 163 245 https://doi.org/10.1081/CR-200031932
- Kim , H. 2006 https://trace.tennessee.edu/utk_gradthes/1717
- Romagnolo , J. 2020
- Millo , F. , Rafigh , M. , Sapio , F. , Wahiduzzaman , S. et al. Modeling NOx Storage and Reduction for a Diesel Automotive Catalyst Based on Synthetic Gas Bench Experiments Industrial & Engineering Chemistry Research 57 2018 https://doi.org/10.1021/acs.iecr.8b01813
- Watling , T. , Tutuianu , M. , Desai , M. , Dai , J. et al. Development and Validation of a Cu-Zeolite SCR Catalyst Model SAE Technical Paper 2011-01-1299 2011 https://doi.org/10.4271/2011-01-1299
- Schrade , F. , Brammer , M. , Schaeffner , J. , Langeheinecke , K. et al. Physico-Chemical Modeling of an Integrated SCR on DPF (SCR/DPF) System SAE Int. J. Engines 5 2012 958 974 https://doi.org/10.4271/2012-01-1083
- Daya , R. , Desai , C. , and Vernham , B. Development and Validation of a Two-Site Kinetic Model for NH3-SCR over Cu-SSZ-13. Part 1. Detailed Global Kinetics Development Based on Mechanistic Considerations Emission Control Science and Technology 4 3 2018 143 171 https://doi.org/10.1007/s40825-018-0095-5
- Daya , R. , Desai , C. , and Vernham , B. Development and Validation of a Two-Site Kinetic Model for NH3-SCR over Cu-SSZ-13—Part 2: Full-Scale Model Validation, ASC Model Development, and SCR-ASC Model Application Emission Control Science and Technology 4 3 2018 172 197 https://doi.org/ 10.1007/s40825-018-0094-6
- Ferreri , P. , Cerrelli , G. , Miao , Y. , Pellegrino , S. et al. Conventional and Electrically Heated Diesel Oxidation Catalyst Physical Based Modeling SAE Technical Paper 2018-37-0010 2018 https://doi.org/10.4271/2018-37-0010
- Kim , C. , Paratore , M. , Gonze , E. , Solbrig , C. et al. Electrically Heated Catalysts for Cold-Start Emissions in Diesel Aftertreatment SAE Technical Paper 2012-01-1092 2012 https://doi.org/10.4271/2012-01-1092
- Pfahl , U. , Schatz , A. , and Konieczny , R. Advanced Exhaust Gas Thermal Management for Lowest Tailpipe Emissions - Combining Low Emission Engine and Electrically Heated Catalyst SAE Technical Paper 2012-01-1090 2012 https://doi.org/10.4271/2012-01-1090
- Gundlapally , S. , Dudgeon , R. , and Wahiduzzaman , S. Efficient Solution of Washcoat Diffusion-Reaction Problem for Real-Time Simulations Emission Control Science and Technology 4 2018 https://doi.org/10.1007/s40825-018-0083-9