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Experimental study of hexagonal and square diesel particulate filters under controlled and uncontrolled catalyzed regeneration

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  • Tsuneyoshi, Koji
  • Yamamoto, Kazuhiro

Abstract

Although diesel engines have high thermal efficiency, large amounts of PM (particulate matter) including soot are emitted. A wall-flow DPF (diesel particulate filter) is one of the most important technologies for diesel emission control. However, the soot accumulation inside the DPF causes an increase of pressure loss. Then, the accumulated diesel soot needs to be burned, which is called a filer regeneration process. In this study, we have investigated the soot combustion on bare and catalyzed DPFs under controlled and uncontrolled regeneration. Two types of DPFs with conventional square and hexagonal cells were used. Results show that, in comparison with the bare DPF, the regeneration efficiency of the catalyzed DPF is clearly higher, indicating a marked effect of catalysts. Independent of regeneration temperature, a greater increase in the regeneration efficiency of the catalyzed DPF was confirmed under controlled regeneration. On the other hand, under uncontrolled regeneration, the maximum temperature of the catalyzed DPF is higher than that of the bare DPF, and it is reached shorter times. Interestingly, by comparing the conventional square cell DPF, the soot oxidation of the hexagonal cell DPF is promoted under controlled and uncontrolled regeneration.

Suggested Citation

  • Tsuneyoshi, Koji & Yamamoto, Kazuhiro, 2013. "Experimental study of hexagonal and square diesel particulate filters under controlled and uncontrolled catalyzed regeneration," Energy, Elsevier, vol. 60(C), pages 325-332.
    • Handle: RePEc:eee:energy:v:60:y:2013:i:c:p:325-332
    DOI: 10.1016/j.energy.2013.07.069
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    References listed on IDEAS

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    2. Zhao, Xiaohuan & Jiang, Jiang & Zuo, Hongyan & Jia, Guohai, 2023. "Soot combustion characteristics of oxygen concentration and regeneration temperature effect on continuous pulsation regeneration in diesel particulate filter for heavy-duty truck," Energy, Elsevier, vol. 264(C).
    3. Liu, Junheng & Yang, Jun & Sun, Ping & Ji, Qian & Meng, Jian & Wang, Pan, 2018. "Experimental investigation of in-cylinder soot distribution and exhaust particle oxidation characteristics of a diesel engine with nano-CeO2 catalytic fuel," Energy, Elsevier, vol. 161(C), pages 17-27.
    4. Macián, V. & Serrano, J.R. & Piqueras, P. & Sanchis, E.J., 2019. "Internal pore diffusion and adsorption impact on the soot oxidation in wall-flow particulate filters," Energy, Elsevier, vol. 179(C), pages 407-421.
    5. Choi, Seungmok & Oh, Kwang-Chul & Lee, Chun-Bum, 2014. "The effects of filter porosity and flow conditions on soot deposition/oxidation and pressure drop in particulate filters," Energy, Elsevier, vol. 77(C), pages 327-337.
    6. Zhao, Xiaohuan & Zuo, Hongyan & Jia, Guohai, 2022. "Effect analysis on pressure sensitivity performance of diesel particulate filter for heavy-duty truck diesel engine by the nonlinear soot regeneration combustion pressure model," Energy, Elsevier, vol. 257(C).
    7. Kazuhiro Yamamoto & Yusei Akai & Naoki Hayashi, 2022. "Numerical Simulation of Spray Combustion with Ultrafine Oxygen Bubbles," Energies, MDPI, vol. 15(22), pages 1-15, November.
    8. Ye, Jiahao & E, Jiaqiang & Peng, Qingguo, 2023. "Effects of porosity setting and multilayers of diesel particulate filter on the improvement of regeneration performance," Energy, Elsevier, vol. 263(PE).
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    10. Millo, Federico & Andreata, Maurizio & Rafigh, Mahsa & Mercuri, Davide & Pozzi, Chiara, 2015. "Impact on vehicle fuel economy of the soot loading on diesel particulate filters made of different substrate materials," Energy, Elsevier, vol. 86(C), pages 19-30.

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