2024-03-29T09:02:23Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00017954
2023-01-16T04:06:17Z
320:321:322
Numerical simulation of continuously regenerating diesel particulate filter
Yamamoto, Kazuhiro
Yamauchi, Kazuki
open access
This is the author's version of a work that was accepted for publication in Proceedings of the Combustion Institute. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms, may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Proceedings of the Combustion Institute. v.34, n.2, 2013, p.3083–3090, DOI: http://dx.doi.org/10.1016/j.proci.2012.06.117
Diesel
Soot oxidation
Combustion product
Catalyst
X-ray CT
In many countries, stricter exhaust emission standards are being set, and a diesel particulate filter (DPF) has been used to trap particulate matters (PM) including soot in diesel exhaust gas. It is reported that DPF filling with PM causes higher back-pressure and more fuel consumption, and continuously regenerating DPF is needed. Usually, to reduce the soot oxidation temperature, a catalyzed DPF is used. However, the phenomena inside DPF are not well understood, because it is difficult to conduct measurements inside the filter. In this study, we simulated soot oxidation and deposition by the lattice Boltzmann method to observe the transport process in continuously regenerating DPF. The inner structure of the filter was obtained by an X-ray CT technique. The reaction rate of soot oxidation by the Pt catalyst, as well as soot deposition probability in the numerical model, was evaluated in experiments. The soot trap and oxidation were investigated to discuss the conditions for the continuous regeneration. When the filter temperature (Tw) is 600 K, the amount of deposited soot is quite similar to that without considering the soot oxidation, so that the soot is not oxidized at this temperature. When Tw is raised to be 800 K, the amount of deposited soot is saturated. Thus, at Tw = 800 K or higher, the filter clogging can be avoided to achieve the continuous regeneration.
Elsevier
2013
eng
journal article
AM
http://hdl.handle.net/2237/20043
https://nagoya.repo.nii.ac.jp/records/17954
https://doi.org/10.1016/j.proci.2012.06.117
1540-7489
Proceedings of the Combustion Institute
34
2
3083
3090
https://nagoya.repo.nii.ac.jp/record/17954/files/109.pdf
application/pdf
1.2 MB
2018-02-21