This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Four Season Field Aging for SCR on DPF (SDPF) on a Light Heavy Duty Application
Technical Paper
2016-01-0929
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
There is growing interest in application of SCR on DPF (SDPF) for light and heavy duty applications, particularly to provide improvements in cold start emissions, as well as improvements in system cost and packaging [1, 2, 3]. The first of systems containing SDPF are just coming to market, with additional introductions expected, particularly for light duty and non-road applications [4].
To provide real world testing for a new SDPF product design prior to availability of OEM SDPF applications, an SDPF and one SCR catalyst were substituted in place of the original two SCR catalysts and a catalyzed diesel particulate filter (CDPF) on a Ford F250 HD pickup. To ensure that the on-road emissions would be comparable to the production system replaced, and to make sure that the control system would be able to operate without detecting some difference in behavior and seeing this as a fault, initial chassis dynamometer work was done before putting the vehicle on the road.
Two complete systems were prepared, with fresh and reference hydrothermally aged diesel oxidation catalyst (DOC), SCR, and SDPF components. First, the hydrothermally aged reference system components were run on the FTP-75 and other cycles on the application, in the configuration DOC + SDPF + SCR and DOC + SCR + SDPF, as well as DOC + SDPF. The DOC + SCR + SDPF configuration provided more similar emissions and DPF pressure profile to the original system, so this was chosen for the road aging. A similar set of emissions tests were run on the fresh parts, then the system was put on the road with a variety of drivers and operating conditions for 50,000 miles over a period of 17 months. At the end of the aging, the road aged parts and the original hydrothermally aged parts were subjected to a similar combination of tests. This provided both a measure of how the system had aged, and how well the road aged system compared to the initial hydrothermal reference aging that was chosen.
Recommended Content
Authors
Topic
Citation
Aryan, D., Price, K., and Pauly, T., "Four Season Field Aging for SCR on DPF (SDPF) on a Light Heavy Duty Application," SAE Technical Paper 2016-01-0929, 2016, https://doi.org/10.4271/2016-01-0929.Also In
References
- Cavataio , G. , Girard , J. , and Lambert , C. Cu/Zeolite SCR on High Porosity Filters: Laboratory and Engine Performance Evaluations SAE Technical Paper 2009-01-0897 2009 10.4271/2009-01-0897
- Ballinger , T. , Cox , J. , Konduru , M. , De , D. et al. Evaluation of SCR Catalyst Technology on Diesel Particulate Filters SAE Int. J. Fuels Lubr. 2 1 369 374 2009 10.4271/2009-01-0910
- Johnson , T. Vehicular Emissions in Review SAE Int. J. Engines 6 2 699 715 2013 10.4271/2013-01-0538
- Green Car Congress 2015 VW Jetta to debut at New York Show; new EA288 diesel version already LEV3/Tier 3 compliant http://www.greencarcongress.com/2014/04/2-0140414-jetta.html
- Environmental Protection Agency Emissions Durability Procedures for New Light-Duty Vehicles, Light-Duty Trucks and Heavy-Duty Vehicles 71 10 January 17 2006 2810 2842
- Heck , R. , Farrauto , R. , Gulati , S. Catalytic Air Pollution Control; Commercial Technology 3 rd John Wiley & Sons, Inc. 2009 978-0-470-27503-0
- Bartley , G. , Chadwell , C. , Kostek , T. , and Zhan , R. SCR Deactivation Kinetics for Model-Based Control and Accelerated Aging Applications SAE Technical Paper 2012-01-1077 2012 10.4271/2012-01-1077
- Conway , R. , Chatterjee , S. , Naseri , M. , and Aydin , C. Demonstration of SCR on a Diesel Particulate Filter System on a Heavy Duty Application SAE Technical Paper 2015-01-1033 2015 10.4271/2015-01-1033
- Price , K. , Wang , L. , and Pauly , T. Evaluation of Field NO x Performance of Diesel Vehicles using ECM - Provided OBD/ SAEJ1979 Data SAE Technical Paper 2015-01-1067 2015 10.4271/2015-01-1067
- Cavataio , G. , Warner , J. , Girard , J. , Ura , J. et al. Laboratory Study of Soot, Propylene, and Diesel Fuel Impact on Zeolite-Based SCR Filter Catalysts SAE Int. J. Fuels Lubr. 2 1 342 368 2009 10.4271/2009-01-0903
- Guo , G. , Warner , J. , Cavataio , G. , Dobson , D. et al. The Development of Advanced Urea-SCR Systems for Tier 2 Bin 5 and Beyond Diesel Vehicles SAE Technical Paper 2010-01-1183 2010 10.4271/2010-01-1183
- Kojima , H. , Fischer , M. , Haga , H. , Ohya , N. et al. Next Generation All in One Close-Coupled Urea-SCR System SAE Technical Paper 2015-01-0994 2015 10.4271/2015-01-0994