Experimental study on regeneration performance and particle emission characteristics of DPF with different inlet transition sections lengths

Li, Jiansong; Fang, Jia; Tan, Jie; Quan, Yuan; Jiang, Yuan; Meng, Zhongwei; Bai, Weilian; Liang, Kun

doi:10.1016/j.fuel.2019.116487

Cited by 76 publications

(35 citation statements)

References 28 publications

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“…A number of studies have been conducted to investigate the influence of regeneration conditions on the PM emission performance of DPF 23‐25 . The various mechanisms obtained from these investigations could reasonably explain the increase phenomenon of PM emission from DPF during regeneration 26‐30 . But these past investigations main focused on the regeneration performance of traditional unidirectional flow DPF.…”

Section: Introductionmentioning

confidence: 99%

Study on characteristics of particulate emission of diesel aftertreatment with reciprocating flow

Deng

Wang

et al. 2021

Energy Science & Engineering

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In this article, in order to optimize diesel aftertreatment system with periodically reciprocating flow (PRF), an experimental study is conducted to investigate its characteristics such as pollution emissions, regeneration of diesel particulate filter (DPF), concentration, and size distribution of particulate matter (PM) escaped as well as temperature distribution under unidirectional flow and PRF operating conditions. The effects of reciprocating flow cycle and exhaust gas flow on the performance of aftertreatment system are investigated in detail. The energy efficiency analysis of the aftertreatment system is also carried out. Experimental results show that (a) as the temperature is lower than the light‐off threshold of combustible gas, the aftertreatment system cannot restrain the formation of second particles under the low‐temperature condition of unidirectional flow; and (b) the aftertreatment system demonstrates excellent performance of trapping particles and filter regeneration as the symmetrical temperature distribution is formed. The PM filter efficiency αPM is 92%, and the specific energy consumption β is 124% for symmetrical temperature distribution; (c) the increase in reciprocating flow cycle could lead to the shifting of the temperature profiles, and this would affect the particle size distribution; (d) a certain increase in exhaust gas flow from engine would have insignificant change for the temperature distribution; and (e) the critical energy efficiency ηc of the system could reach 96.61%.

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Section: Introductionmentioning

confidence: 99%

Study on characteristics of particulate emission of diesel aftertreatment with reciprocating flow

Deng

Wang

et al. 2021

Energy Science & Engineering

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“…The government has formulated a series of extremely stringent emission standards to direct against the emission problem. This problem caused by diesel engines is harmful to human health and the environment [3,4]. A wall-flow diesel particulate filter (DPF) can dispose of those emission problems efficiently [5].…”

Section: Introductionmentioning

confidence: 99%

Influence of Different Thermal Aging Conditions on Soot Combustion with Catalyst by Thermogravimetric Analysis

et al. 2021

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Diesel particulates are deposited in the diesel particulate filter and removed by the regeneration process. The Printex-U (PU) particles are simulated as the diesel soot to investigate the influence of thermal aging conditions on soot combustion performance with the addition of catalysts. The comprehensive combustion index S, combustion stability index Rw and peak temperature Tp are obtained to evaluate the combustion performance. Compared with the PU/Pt mixtures of different Pt contents (2 g/ft3, 3.5 g/ft3, and 5 g/ft3), the 10 g/ft3 Pt contents improve soot combustion with the outstanding oxygen absorption ability. When the weight ratio of PU/Pt mixture is 1:1, the promoted effect achieves the maximum degree. The S and Rw increase to 8.90 × 10−8 %2min−2°C−3 and 39.11 × 105, respectively, compared with pure PU. After the thermal aging process, the PU/Pt mixture with a 350 °C aging temperature for 10 h promotes the soot combustion the best when compared to pure PU particles. It is not good as the PU/Pt mixture without aging, because the inner properties of soot and Pt/Al2O3 catalyst may have been changed. The S and Rw are 9.07 × 10−8 %2min−2°C−3 and 38.39 × 105, respectively, which are close to the no aging mixture. This work plays a crucial role in understanding the mechanism of the comprehensive effect of soot and catalyst on soot combustion after the thermal aging process.

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“…20 Among them, DPF is considered the most effective technology towards PM reduction with a capturing efficiency of more than 95%. 21 However, the excessive soot loadings result in a high pressure drop, fuel penalty 21 and DPF degradation, 22 so periodic regeneration is inevitable. 23 Therefore, a great deal of effort has been devoted to investigating the regeneration process for the extension of DPF life time and emission reduction.…”

Section: Introductionmentioning

confidence: 99%

Thermogravimetric analysis of soot combustion in the presence of ash and soluble organic fraction

et al. 2020

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Experimental study on regeneration performance and particle emission characteristics of DPF with different inlet transition sections lengths

Cited by 76 publications

References 28 publications

Study on characteristics of particulate emission of diesel aftertreatment with reciprocating flow

Study on characteristics of particulate emission of diesel aftertreatment with reciprocating flow

Influence of Different Thermal Aging Conditions on Soot Combustion with Catalyst by Thermogravimetric Analysis

Thermogravimetric analysis of soot combustion in the presence of ash and soluble organic fraction

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