Effect of the amount of trapped particulate matter on diesel particulate filter regeneration performance using nonthermal plasma assisted by exhaust waste heat

Yunxi SHI (施蕴曦); Yixi CAI (蔡忆昔); Xiaohua LI (李小华); Xiaoyu PU (濮晓宇); Nan ZHAO (赵楠); Weikai WANG (王为凯)

doi:10.1088/2058-6272/ab4d3c

Plasma Science and Technology > 2020 > 22(1): 15504-015504. > DOI: 10.1088/2058-6272/ab4d3c

Yunxi SHI (施蕴曦), Yixi CAI (蔡忆昔), Xiaohua LI (李小华), Xiaoyu PU (濮晓宇), Nan ZHAO (赵楠), Weikai WANG (王为凯). Effect of the amount of trapped particulate matter on diesel particulate filter regeneration performance using nonthermal plasma assisted by exhaust waste heat[J]. Plasma Science and Technology, 2020, 22(1): 15504-015504. DOI: 10.1088/2058-6272/ab4d3c

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Effect of the amount of trapped particulate matter on diesel particulate filter regeneration performance using nonthermal plasma assisted by exhaust waste heat

School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China

Funds: This work is currently supported by National Natural Science Foundation of China (Nos. 51806085, 51676089), China Postdoctoral Science Foundation (No. 2018M642175), Jiangsu Planned Projects for Postdoctoral Research Fund (No. 2018K101C) and Jiangsu University Youth Talent Cultivation Program Funded Project.

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Received Date: July 30, 2019
Revised Date: October 10, 2019
Accepted Date: October 11, 2019

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Abstract

Abstract

An experimental system of diesel particulate filter (DPF) regeneration using non-thermal plasma (NTP) technology assisted by exhaust waste heat was conducted and regeneration experiments of DPFs with different amounts of trapped particulate matter (PM) were conducted. The concentrations of the PM decomposition products (CO_x) and the internal temperature of the DPF were monitored to determine the performance of DPF regeneration and thermal safety of the NTP technology. The results showed that the concentrations of CO and CO₂ and the mass of PM decomposition increased with the increase in the amount of captured PM, whereas the concentration of the NTP active substance (O₃) escaping from the DPF decreased under the same working conditions of the NTP injection system. A higher amount of captured PM promoted the oxidative decomposition reaction between NTP and PM and improved the utilization rate of the NTP active substances. The peak temperature at the same measuring point inside the DPF generally increased and the phases of the peak temperature were delayed as the amount of captured PM increased. The temperature peaks and temperature gradients during the DPF regeneration process were far lower than the failure limit value, which indicates that NTP regeneration technology has good thermal durability and increases the service life of the DPF.
- diesel,
- diesel particulate filter,
- regeneration,
- particulate matter,
- non-thermal plasma

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References (38)

References

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Effect of the amount of trapped particulate matter on diesel particulate filter regeneration performance using nonthermal plasma assisted by exhaust waste heat