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Low Temperature Diesel Particulate Filter Regeneration by Atmospheric Air Non-thermal Plasma Injection System

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Abstract

An experimental study of the regeneration of diesel particulate filter (DPF) was conducted through the use of a self-designed Non-thermal plasma (NTP) injection system with an experimental temperature of 20–300 °C, with atmospheric air being used as the gas source. The results revealed that the PM could be broken down into CO and CO2 by NTP, through a discharge reaction of the NTP reactor. As the temperature increases, the mass of C1 (mass of C in CO) showed an overall declining trend. Interestingly, the mass of C2 (mass of C in CO2) and C12 (the sum of C1 and C2) both showed an initial increase, followed by a decrease. The peak mass of C12 appears at 150 °C, and both axial and radial temperature gradients are less than the limit of DPF temperature gradient at this temperature. In conclusion, DPF can be regenerated by the NTP technology at a lower temperature, which can aid in the avoidance of thermal damage of DPF. The technology boasts a great advantage in adopting atmospheric air as its gas source, which can not only reduce costs, but also is convenient.

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Acknowledgments

This work is currently supported by the National Natural Science Foundation of China (No. 51176067), the Priority Academic Program Development of Jiangsu Higher Education Institutions ([2011]No.6), and the Graduate Students Scientific Research Innovation Project of Jiangsu Ordinary University (KYLX15_1070).

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Authors and Affiliations

  1. School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu, China

    Yunxi Shi, Yixi Cai, Xiaohua Li, Hui Xu, Weijun Li & Xiaoyu Pu

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  1. Yunxi Shi
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  2. Yixi Cai
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  3. Xiaohua Li
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  4. Hui Xu
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  5. Weijun Li
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Correspondence to Yunxi Shi.

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Shi, Y., Cai, Y., Li, X. et al. Low Temperature Diesel Particulate Filter Regeneration by Atmospheric Air Non-thermal Plasma Injection System. Plasma Chem Plasma Process 36, 783–797 (2016). https://doi.org/10.1007/s11090-016-9701-x

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  • DOI: https://doi.org/10.1007/s11090-016-9701-x

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