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Light-Off Temperature Shift for Catalyzed Diesel Particulate Filter On-Board Diagnostics
Technical Paper
2012-01-1248
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Upcoming California on-board diagnostics (OBD) regulations require lighting the malfunction indicator lamp (MIL) when a catalyzed diesel particulate filter (CDPF) is inert with respect to nonmethane hydrocarbon (NMHC). Light-off temperature shift detection uses a correlation between CDPF age and the gradual increase in catalyst light-off temperature to determine the age of a CDPF. The proposed OBD strategy necessitates slipping HC past the upstream diesel oxidation catalyst (DOC) to ignite on the CDPF. The best-case OBD solution space requires engine net power levels less than 43 hp on a Cummins ISB. Radial temperature measurements downstream of the DOC revealed regional DOC light-off which would not be able to be detected by a single temperature sensor. CDPF light-off independent of DOC light-off was never observed under any testing, eliminating the possibility of using light-off temperature shift as a detection strategy.
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Citation
Schultz, R. and Meckl, P., "Light-Off Temperature Shift for Catalyzed Diesel Particulate Filter On-Board Diagnostics," SAE Technical Paper 2012-01-1248, 2012, https://doi.org/10.4271/2012-01-1248.Also In
References
- American Filtration Society and Separation Low Temperature Oxidation Catalyst Development and Applications 2008
- Iojoiu, Eduard Emil Bassou, Badr Guilhaume, Nolven Farrusseng, David Desmartin-Chomel, Arnold Bianchi, Daniel Mirodatos, Claude Lombaert, Karine High-thoroughput approach to the catalytic combustion of diesel soot Catalysis Today 2008
- Mayer, A. Ulrich, A. Heeb, N. Czerwinski, J. et al. “Particle Filter Properties after 2000 hrs Real World Operation,” SAE Technical Paper 2008-01-0332 2008 10.4271/2008-01-0332
- Nakane, T. Ikeda, M. Hori, M. Bailey, O. et al. “Investigation of the Aging Behavior of Oxidation Catalysts Developed for Active DPF Regeneration Systems,” SAE Technical Paper 2005-01-1759 2005 10.4271/2005-01-1759
- SEO, J. Chang, H. Kim, S. “Control of a Catalyzed Diesel Particulate Filter System III (Engine Bench Accelerated Aging Test Development for a Passenger Car Catalyzed Particulate Filter System),” SAE Technical Paper 2006-01-0422 2006 10.4271/2006-01-0422
- Veser, Götz Ziauddin, Murtaza Schmidt, Lanny D. Ignition in alkane oxidation on noble-metal catalysts Catalysis Today 47 219 228 1999
- Votsmeier, Martin Geishoff, Jürgen Kögel, Markus Pfeifer, Markus Knoth, Jens Felix Drochner, Alfons Vogel, Herbert Wall-flow filters with wall-integrated oxidation catalyst: A simulation study Applied Catalysis B: Environmental 70 233 240 2007
- Schultz, R. Meckl, P. “Degradation of Nonmethane Hydrocarbon Oxidation Efficiency of a Catalyzed Diesel Particulate Filter during Aging,” SAE Int. J. Engines 4 1 1776 1783 2011 10.4271/2011-01-1308