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Verification of Accelerated PM Loading for DPF Qualification Studies
Technical Paper
2009-01-1089
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
High gas prices combined with demand for improved fuel economy have prompted increased interest in diesel engine applications for both light-duty and heavy-duty vehicles. The development of aftertreatment systems for these vehicles requires significant investments of capital and time. A reliable and robust qualification testing procedure will allow for more rapid development with lower associated costs. Qualification testing for DPFs has its basis in methods similar to DOCs but also incorporates a PM loading method and regeneration testing of loaded samples. This paper examines the effects of accelerated loading using a PM generator and compares PM generator loaded DPFs to engine dynamometer loaded samples. DPFs were evaluated based on pressure drop and regeneration performance for samples loaded slowly and for samples loaded under accelerated conditions. A regeneration reactor was designed and built to help evaluate the DPFs loaded using the PM generator and an engine dynamometer.
Data demonstrates that the procedures used for accelerated PM loading are reasonable. Normalized regeneration results of samples loaded for 45, 60 and 90 minutes using the PM generator show less then 5% difference. CO and CO2 light-off results obtained during regeneration tests were within 5% for the three different loading times. The slopes of the loading curve between PM generator (35 min.) and engine dynamometer (180 min.) were 0.28 and 0.29, respectively when samples were loaded to the same mass. We believe the main difference is the chemical composition of the PM for the dynamometer vs. PM generator. Regeneration results show a lower temperature light-off for PM generator loaded samples when compared to engine dynamometer loaded samples. Dynamometer loaded samples have a slightly faster regeneration response, but the qualitative features track with overall loading and PM oxidation characteristics. It was determined that the method was not only accurate but was also repeatable for multiple samples.
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Warner, J., Dobson, D., Shah, S., and Lambert, C., "Verification of Accelerated PM Loading for DPF Qualification Studies," SAE Technical Paper 2009-01-1089, 2009, https://doi.org/10.4271/2009-01-1089.Also In
References
- Pattas K., et al. 1992 “Cordierite filter durability with cerium fuel additive: 100000 km of revenue service in Athens” SAE Technical Paper 920363
- Konstandapolous, A. G., et al. Sustained Soot Oxidation in Catalytically Coated Filters SAE 2007-01-1950
- Shah, S.D. Cocker, D.R. Miller, J.W. Norbeck, J.M. Characterization of Diesel PM Reduction Capabilities of Four Exhaust Aftertreatment Technologies Environmental Science and Technology 41 (14) 2007
- Perry, R.H. 1984 “Perry’s Chemical Engineers’ Handbook” McGraw-Hill 6th edition
- Nauss, K. 1997 Health Effects Institute (HEI) “Diesel exhaust: A critical analysis of emissions, exposure and health effects”
- Cooper, B.J. Thoss, J.E. 1989 “Role of NO in Diesel Particulate Emission Control” SAE 890404
- Allansson, R. Blackeman, P.G. Cooper, B.J. Hess, H. Silcock, P.J. Walker, A.P. 2002 “Optimizing the Low Temperature Performance and Regeneration Efficiency of the Continuously Regenerating Diesel Particulate Filter (CR-DPF) System” SAE 2002-01-0428
- Shah, Sandip D. Dobson, Douglas A. “A Soot Generator for DPF Qualification Studies” 2007-01-0322”
- Warner, James R. Shah, Sandip D. Dobson, Douglas A. Lambert, Christine “Development of a Regeneration Reactor and a Process for the Evaluation of DPF Substrates” SRR-2007-0100
- Darcy, Pierre Da Costa, Patrick Mellottee, Henry Trichard, Jean-Michel Djega-Mariadassou, Gerald “Kinetics of Catalyzed and Non-catalyzed Oxidation of Soot from a Diesel Engine” Catalyst today 119 2007 252 256