Evolution of particulate matter deposited in the DPF channel during low-temperature regeneration by non-thermal plasma

Shi, Yunxi; Lu, Yirui; Cai, Yixi; He, Yong; Zhou, Yonglin; Fang, Jia

doi:10.1016/j.fuel.2022.123552

Cited by 43 publications

(13 citation statements)

References 49 publications

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“…It is worth noting that the use of NTP technology in DPF is becoming popular recently. PM can be oxidized at low temperature by electron collision (Shi et al 2022 ). This is very beneficial to the improvement service life for the engine.…”

Section: Diesel Particulate Filter Regenerationmentioning

confidence: 99%

“…Compared with other regeneration technologies, NTP technology uses external energy, but its oxidation reaction temperature is extremely low. Under the action of catalyst, the regeneration can be carried out at 17°C (Shi et al 2022 ). Which is friendly to filter life.…”

Section: Diesel Particulate Filter Regenerationmentioning

confidence: 99%

“…Non-thermal plasma (NTP) is a new technology (Cui et al 2018 ). When the NTP obtained by the reaction of the additional energy supply device is mixed with the soot, it can promote the reaction of the soot under normal exhaust temperature (Shi et al 2022 ). Low temperature reaction can greatly prolong the service life of DPF and avoid uncontrolled regeneration.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Diesel particulate filter regeneration mechanism of modern automobile engines and methods of reducing PM emissions: a review

Zhang

Dong

Lan

et al. 2023

Environ Sci Pollut Res

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Diesel particulate filter (DPF) is considered as an effective method to control particulate matter (PM) emissions from diesel engines, which is included in the mandatory installation list by more and more national/regional laws and regulations, such as CHINA VI, Euro VI, and EPA Tier3. Due to the limited capacity of DPF to contain PM, the manufacturer introduced a method of treating deposited PM by oxidation, which is called regeneration. This paper comprehensively summarizes the most advanced regeneration technology, including filter structure, new catalyst formula, accurate soot prediction, safe and reliable regeneration strategy, uncontrolled regeneration and its control methods. In addition, due to the change of working conditions in the regeneration process, the additional emissions during regeneration are discussed in this paper. The DPF is not only the aftertreatment device but also can be combined with diesel oxidation catalyst (DOC), selective catalytic reduction (SCR) and exhaust recirculation (EGR). In addition, the impact of DPF modification on the original system of some old models has been reasonably discussed in order to achieve emission targets.

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Section: Diesel Particulate Filter Regenerationmentioning

confidence: 99%

Section: Diesel Particulate Filter Regenerationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Diesel particulate filter regeneration mechanism of modern automobile engines and methods of reducing PM emissions: a review

Zhang

Dong

Lan

et al. 2023

Environ Sci Pollut Res

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“…Diesel particulate filters (DPF) are widely acknowledged as the most effective method to reduce PM emissions. Its capture efficiency is more than 95% [6,7], which has become the usual arrangement for posttreatment systems. The DPF has a honeycomb structure consisting of an open square at one end of the DPF, thus forcing the engine exhaust gases through the porous wall of the DPF, causing the PM particles to be filtered through a porous wall.…”

Section: Introductionmentioning

confidence: 99%

“…[10]; thus oxidizing soot with oxygen (O2) in a DPF [2]. However, excessive soot loading or fuel injection might result in high temperatures and uncontrolled regeneration from surface oxidation of PM, causing different thermal expansion cracks or melting of the porous supports may occur, causing irreparable damage [7].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Direct Non-Thermal Plasma Treatment on Soot Characteristics under Low Exhaust Gas Temperature

Iamcheerangkoon,

Chollacoop,

Sawatmongkhon

et al. 2023

E3S Web Conf.

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This study aimed to assess the effectiveness of nonthermal plasma (NTP) technology utilizing a dielectric barrier discharge (DBD) reactor, both with and without exhaust gas recirculation (EGR), in reducing soot particles and their impact on nitrogen oxides (NOx). The experiment involved maintaining a constant flue gas flow rate of 10 l/min, employing high voltage values of 0, 6, and 10 kV, fixed frequency of 500 Hz and setting the various IMEP of 5, 6, and 7 bar and the engine speed at 2,000 rpm. The findings demonstrated that NTP was successful in removing NOx by approximately 16.84% and 17.01%, achieving particle matter (PM) removal efficiencies of around 60.79% and 81.13%, and effectively reducing activation energy by approximately 18.34% and 31.5% (with and without EGR, respectively) at a high voltage of 10 kV. These results highlight the potential of NTP technology in mitigating emissions and reducing the environmental impact associated with diesel engines.

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Effect soluble organic fraction mass fraction on emission characteristics of carbon black

Li,

Meng,

Liao

2024

Env Prog and Sustain Energy

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According to China's latest emission regulations for the year 2021, diesel vehicles are required to be equipped with a diesel particulate filter (DPF) in accordance with emission standards. To comprehensively understand the regeneration and emission performance of the DPF, an externally heated regeneration performance test bench was established. This study aims to investigate the influence of the soluble organic fraction (SOF) and types of carbon black on particle emissions from the outlet of the DPF. The experimental results indicate that both SOF and carbon black structure can affect DPF regeneration. When the SOF mass fraction increases to 20%, SOF plays a dominant role. The regeneration efficiency of Printex‐U and FW200 carbon black is 62.4% and 60.6%, respectively, with total mass concentrations of 21.8 and 14.9 mg/m3 at the DPF outlet. Compared to conditions without SOF, the regeneration efficiency and total mass concentration at the DPF outlet increase by 1.3 times and 6.6 times for Printex‐U carbon black, and 1.8 times and 440 times for FW200 carbon black, respectively. Additionally, when SOF mass fraction is 0%, the highest proportion of the average particle diameter for both Printex‐U and FW200 carbon black is in the [10, 20] nm range, at 20% and 95%, respectively. When the SOF mass fraction is increased to 20%, the proportions of the average particle diameter for both types of carbon black in the [10, 20] nm range rise to above 99%. This study provides a relevant experimental foundation for the emission control of DPF.

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Evolution of particulate matter deposited in the DPF channel during low-temperature regeneration by non-thermal plasma

Cited by 43 publications

References 49 publications

Diesel particulate filter regeneration mechanism of modern automobile engines and methods of reducing PM emissions: a review

Diesel particulate filter regeneration mechanism of modern automobile engines and methods of reducing PM emissions: a review

The Influence of Direct Non-Thermal Plasma Treatment on Soot Characteristics under Low Exhaust Gas Temperature

Effect soluble organic fraction mass fraction on emission characteristics of carbon black

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