Diesel particulate filters (DPFs) are well assessed aftertreatment devices, equipping almost every modern diesel engine on the market to comply with today’s stringent emission standards. However, an accurate estimation of soot loading, which is instrumental to ensuring optimal performance of the whole engine-after-treatment assembly, is still a major challenge. In fact, several highly coupled physical-chemical phenomena occur at the same time, and a vast number of engine and exhaust dependent parameters make this task even more daunting. This challenge may be solved with models characterized by different degrees of detail (0-D to 3-D) depending on the specific application. However, the use of real-time, but accurate enough models, may be the primary hurdle that has to be overcome when confronted with advanced exhaust emissions control challenges, such as the integration of the DPF with the engine or other critical aftertreatment components (selective catalytic reduction or other NOx control components), or to properly develop model-based OBD sensors. This paper aims at addressing real time DPF modeling issues with special regard to key parameter settings, by using the 1-D code called ExhAUST (exhaust aftertreatment unified simulation tool), which was jointly developed by the University of Rome Tor Vergata and West Virginia University. ExhAUST is characterized by a novel and unique full analytical treatment of the wall that allows a highly detailed representation of the soot loading evolution inside the DPF porous matrix. Numerical results are compared with experimental data gathered at West Virginia University engine laboratory using a MY2004 Mack®MP7-355E, an 11 liter, 6-cylinder, inline heavy-duty diesel engine coupled to a Johnson Matthey CCRT diesel oxidation catalyst + CDPF, catalyzed DPF exhaust aftertreatment system. To that aim, the engine test bench was equipped with a DPF weighing system to track soot loading over a specifically developed engine operating procedure. Results indicate that the model is accurate enough to capture soot loading and back pressure histories with regard to different steady state engine operating points, without a need for any tuning procedure of the key parameters. Thus, the use of ExhAUST for application to advanced after-treatment control appears to be a promising tool at this stage.
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e-mail: alessandro.cozzolini@mail.wvu.edu
e-mail: aeroshana@yahoo.com
e-mail: daniele.littera@mail.wvu.edu
e-mail: manoharan.thiagarajan@mail.wvu.edu
e-mail: marc.besch@mail.wvu.edu
e-mail: mridul.gautam@mail.wvu.edu
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December 2011
Research Papers
Soot Modeling for Advanced Control of Diesel Engine Aftertreatment
V. Mulone,
V. Mulone
Department of Mechanical Engineering, University of Rome Tor Vergata
, via del Politecnico1, 00133 Rome, Italy; Fulbright Research Scholar, Mechanical and Aerospace Engineering ESB, College of Engineering and Mineral Resources, West Virginia University
, Morgantown, WV 26506-6106 e-mail: ,
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A. Cozzolini,
A. Cozzolini
Mechanical and Aerospace Engineering ESB, College of Engineering and Mineral Resources,
e-mail: alessandro.cozzolini@mail.wvu.edu
West Virginia University
, Morgantown, WV 26506-6106
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P. Abeyratne,
P. Abeyratne
Mechanical and Aerospace Engineering ESB, College of Engineering and Mineral Resources,
e-mail: aeroshana@yahoo.com
West Virginia University
, Morgantown, WV 26506-6106
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D. Littera,
D. Littera
Mechanical and Aerospace Engineering ESB, College of Engineering and Mineral Resources,
e-mail: daniele.littera@mail.wvu.edu
West Virginia University
, Morgantown, WV 26506-6106
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M. Thiagarajan,
M. Thiagarajan
Mechanical and Aerospace Engineering ESB, College of Engineering and Mineral Resources,
e-mail: manoharan.thiagarajan@mail.wvu.edu
West Virginia University
, Morgantown, WV 26506-6106
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M. C. Besch,
M. C. Besch
Mechanical and Aerospace Engineering ESB, College of Engineering and Mineral Resources,
e-mail: marc.besch@mail.wvu.edu
West Virginia University
, Morgantown, WV 26506-6106
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M. Gautam
M. Gautam
Mechanical and Aerospace Engineering ESB, College of Engineering and Mineral Resources,
e-mail: mridul.gautam@mail.wvu.edu
West Virginia University
, Morgantown, WV 26506-6106
Search for other works by this author on:
V. Mulone
Department of Mechanical Engineering, University of Rome Tor Vergata
, via del Politecnico1, 00133 Rome, Italy; Fulbright Research Scholar, Mechanical and Aerospace Engineering ESB, College of Engineering and Mineral Resources, West Virginia University
, Morgantown, WV 26506-6106 e-mail: ,
A. Cozzolini
Mechanical and Aerospace Engineering ESB, College of Engineering and Mineral Resources,
West Virginia University
, Morgantown, WV 26506-6106e-mail: alessandro.cozzolini@mail.wvu.edu
P. Abeyratne
Mechanical and Aerospace Engineering ESB, College of Engineering and Mineral Resources,
West Virginia University
, Morgantown, WV 26506-6106e-mail: aeroshana@yahoo.com
D. Littera
Mechanical and Aerospace Engineering ESB, College of Engineering and Mineral Resources,
West Virginia University
, Morgantown, WV 26506-6106e-mail: daniele.littera@mail.wvu.edu
M. Thiagarajan
Mechanical and Aerospace Engineering ESB, College of Engineering and Mineral Resources,
West Virginia University
, Morgantown, WV 26506-6106e-mail: manoharan.thiagarajan@mail.wvu.edu
M. C. Besch
Mechanical and Aerospace Engineering ESB, College of Engineering and Mineral Resources,
West Virginia University
, Morgantown, WV 26506-6106e-mail: marc.besch@mail.wvu.edu
M. Gautam
Mechanical and Aerospace Engineering ESB, College of Engineering and Mineral Resources,
West Virginia University
, Morgantown, WV 26506-6106e-mail: mridul.gautam@mail.wvu.edu
J. Eng. Gas Turbines Power. Dec 2011, 133(12): 122804 (12 pages)
Published Online: August 31, 2011
Article history
Received:
November 15, 2010
Revised:
December 2, 2010
Online:
August 31, 2011
Published:
August 31, 2011
Citation
Mulone, V., Cozzolini, A., Abeyratne, P., Littera, D., Thiagarajan, M., Besch, M. C., and Gautam, M. (August 31, 2011). "Soot Modeling for Advanced Control of Diesel Engine Aftertreatment." ASME. J. Eng. Gas Turbines Power. December 2011; 133(12): 122804. https://doi.org/10.1115/1.4003958
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