A fluidized bed-type diesel particulate filter (DPF) was applied to filter particulate matter (PM) in diesel engine exhaust gas. The effects of the fluidized bed design parameters, such as gas velocity, bed particle size, and height, on PM and smoke filtration efficiencies, and pressure drop were experimentally investigated using a single-cylinder direct injection (DI) diesel engine. High PM filtration efficiency and low pressure drop were achieved with the DPF, especially at a lower gas velocity. The PM filtration efficiency was higher with a smaller bed particle size at the lower gas velocity; however, it drastically decreased with an increase in gas velocity due to excessive fluidization of the bed particles. Increase in bed height led to higher PM filtration efficiency while causing an increase in pressure drop. The theoretical work was also conducted for further investigation of the effects of the above-mentioned parameters on PM filtration. These results indicated that diffusion filtration was the dominant mechanism for PM filtration under the conditions of this study and that the decrease in PM filtration efficiency at high gas velocity was caused by a deterioration in the diffusion filtration. The bed particle diameter and the bed height should be optimized in order to obtain a high filtration efficiency without increasing the DPF size.
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e-mail: sskee@energy.kyoto-u.ac.jp
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October 2007
Technical Papers
A Study on Fluidized Bed-Type Particulate Filter for Diesel Engines
Sung-Sub Kee,
Sung-Sub Kee
Graduate School of Energy Science,
e-mail: sskee@energy.kyoto-u.ac.jp
Kyoto University
, Yoshida Honmachi, Sakyo-ku, Kyoto, 606-8501, Japan
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Ali Mohammadi,
Ali Mohammadi
Graduate School of Energy Science,
Kyoto University
, Yoshida Honmachi, Sakyo-ku, Kyoto, 606-8501, Japan
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Takuji Ishiyama,
Takuji Ishiyama
Graduate School of Energy Science,
Kyoto University
, Yoshida Honmachi, Sakyo-ku, Kyoto, 606-8501, Japan
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Takaaki Kakuta
Takaaki Kakuta
Graduate School of Energy Science,
Kyoto University
, Yoshida Honmachi, Sakyo-ku, Kyoto, 606-8501, Japan
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Sung-Sub Kee
Graduate School of Energy Science,
Kyoto University
, Yoshida Honmachi, Sakyo-ku, Kyoto, 606-8501, Japane-mail: sskee@energy.kyoto-u.ac.jp
Ali Mohammadi
Graduate School of Energy Science,
Kyoto University
, Yoshida Honmachi, Sakyo-ku, Kyoto, 606-8501, Japan
Takuji Ishiyama
Graduate School of Energy Science,
Kyoto University
, Yoshida Honmachi, Sakyo-ku, Kyoto, 606-8501, Japan
Takaaki Kakuta
Graduate School of Energy Science,
Kyoto University
, Yoshida Honmachi, Sakyo-ku, Kyoto, 606-8501, JapanJ. Eng. Gas Turbines Power. Oct 2007, 129(4): 1072-1078 (7 pages)
Published Online: February 9, 2007
Article history
Received:
March 2, 2006
Revised:
February 9, 2007
Citation
Kee, S., Mohammadi, A., Ishiyama, T., and Kakuta, T. (February 9, 2007). "A Study on Fluidized Bed-Type Particulate Filter for Diesel Engines." ASME. J. Eng. Gas Turbines Power. October 2007; 129(4): 1072–1078. https://doi.org/10.1115/1.2747255
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