Numerical Study on the Effect of Geometric Shape of DOC/DPF and Catalyst Loading for NO2-Assisted Continuous Regeneration
- Title
- Numerical Study on the Effect of Geometric Shape of DOC/DPF and Catalyst Loading for NO2-Assisted Continuous Regeneration
- Author
- 김우승
- Issue Date
- 2007-11
- Publisher
- SAE
- Citation
- ICE 2007 8th International Conference on Engines for Automobile, Article no. 2007-24-0101
- Abstract
- In recent years, several methods to regenerate PM
(Particulate Material) from DPF (Diesel Particulate Filter)
have been developed to meet getting more stringent
emission regulations. A favorable technology is NO2-
assisted regeneration method due to the capability of
continuous regeneration of PM under much lower
temperature than that of thermal regeneration. The
minimization of maximum DPF wall temperature and the
fast Light-off during regeneration are the targets for the
high durability of the DPF system and the high efficiency
of regeneration. In this study, one-channel numerical
modeling has been adopted in order to predict a thermal
behavior of the monolith during regeneration and a
conversion rate of NO2 from NO with a combined
exhaust system of DOC (Diesel Oxidation Catalyst) and
DPF. The simulation results are compared with
experimental data to verify the accuracy of the present
model for the integrated DOC and DPF modeling. The
effects of catalyst loading and the volume ratio between
DOC and DPF on the conversion and regeneration
efficiency have been numerically investigated. The
results indicate that the model of ‘volume ratio of
DOC/DPF=1.5’ with a same diameter of both monoliths
showed almost the maximum performance on the
conversion and regeneration efficiency. About
55g pt / ft3 monolith of catalyst (Pt) loading under the engine
operating condition in this study is enough to maximize
the conversion and regeneration efficiency.
- URI
- https://saemobilus.sae.org/content/2007-24-0101https://repository.hanyang.ac.kr/handle/20.500.11754/107332
- ISSN
- 0148-7191
- DOI
- 10.4271/2007-24-0101
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML