Experimental study of the active and passive regeneration procedures of a diesel particulate filter in a diesel methanol dual fuel engine

Chen, Chao; Yao, Anren; Yao, Chunde; Qu, Guofan

doi:10.1016/j.fuel.2019.116801

Cited by 48 publications

(11 citation statements)

References 45 publications

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“…Interestingly, in some studies, the fuel injected was no longer limited to pure diesel. In the research of Chen et al ( 2020b ), the mixture of diesel and methanol was used as an energy source for active regeneration. The result showed that the active regeneration using mixed fuel had the lower PM, PN, NO 2 , and CO 2 emissions and higher fuel utilization.…”

Section: Diesel Particulate Filter Regenerationmentioning

confidence: 99%

“…The advantage of passive regeneration is that no additional complex heating structure is required, and the lower reaction temperature can also prolong the service life of DPF (Ko et al 2019 ). However, the passive regeneration requires the high engine operating conditions (Chen et al 2020b ). Therefore, the passive regeneration system is usually applied to long-distance vehicles with high exhaust temperature and long operation time (Rothe et al 2015 ).…”

Section: Diesel Particulate Filter Regenerationmentioning

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 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%

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

View full text Add to dashboard Cite

show abstract

“…A lot of research work has been carried out to settle the problem of the sudden increase of particulate emission during the active regeneration process [15][16][17][18][19][20]. Bergmann et al [11] and Rothe et al [21] indicated that the new or secondary particles could be produced during the process of soot layer oxidation, which might penetrate the DPF's substrate and decrease the filtration efficiency.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the DPF High-Temperature Filtration Performance under Different Particle Loadings and Particle Deposition Distributions

et al. 2021

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Based on DPF filtration and regeneration bench, the solid particle emission and high-temperature filtration characteristics of different carbon black particle loadings and particle deposition distributions are studied. The aerosol generator (PAlAS RGB 1000) is used to introduce carbon black particles into the inlet of a DPF, and the NanoMet3 particle meter is used to measure the solid particle concentration at the inlet and outlet of a DPF to obtain the filtration characteristics. Previous studies found that without inlet carbon black particles, there was an obvious solid particle emission peak at the outlet of the deposited DPF during the heating, and the concentration increased by 1–2 orders of magnitude. In this paper, the high-temperature filtration characteristics under steady-state temperature conditions are studied. It is found that a DPF can reduce the range of inlet fluctuating particles, and with the increase of temperature, the proportion of large solid particles in the outlet particles increases, and the size distribution range decreases. Particle loading has positive and negative effects on the DPF filtration, and the DPF has the optimal particle loading, which makes the comprehensive filtration efficiency improve the highest. The deposition transition section can make the deposition particles in the DPF uniform, but the filtration efficiency is reduced.

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“…13 When the exhaust back pressure of DPF reaches a certain degree, the regeneration process will start. 14 Aging not only affects the performance of DPF but also affects the properties of PM and the catalyst deposited in DPF. PM usually includes carbon, ash, organic compounds, and sulfate materials.…”

Section: Introductionmentioning

confidence: 99%

“…Passive regeneration is able to reduce the regeneration temperature to 200–400 °C with the help of catalysts. , Passive regeneration is the coating of a layer of catalyst in DPF to reduce the starting temperature of PM, so it can be regenerated at the exhaust temperature of the engine. , In the process of active regeneration, PM is not regenerated immediately after accumulating in DPF, which is subjected to the aging effect of exhaust gas for a certain period of time, and the exhaust temperature of the engine is usually between 180–400 °C . When the exhaust back pressure of DPF reaches a certain degree, the regeneration process will start …”

Section: Introductionmentioning

confidence: 99%

Effect of Different Aging Conditions on the Soot Oxidation by Thermogravimetric Analysis

et al. 2020

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Diesel particulate filter is an effective device to reduce diesel particulate emission. The particles in diesel particulate filter are usually affected by the aging of high-temperature exhaust gas before the regeneration process. In order to investigate the effect of aging conditions on the soot oxidation process, the effect of aging temperature and aging time on the oxidation process of carbon black (Printex-U, PU) and the PU/catalyst/ash mixture are studied by thermogravimetric analysis. The aging PU particles have lower starting temperature, peaking temperature, ending temperature, and activation energy. Compared with the particles without aging, the PU particles with a 400 °C aging temperature and 20 h aging time are able to reduce the activation energy from 191.2 to 158 kJ/mol. Low aging temperatures (200–300 °C) and the catalyst have a certain synergistic effect on the improvement of PU oxidation activity. The PU/CeO2 mixture with a 300 °C aging temperature and 20 h aging time decreases the activation energy from 178.4 to the lowest 113.6 kJ/mol. The addition of CaSO4 in PU particles cannot stop the improvement of its oxidation activity by aging, but it reduces the effect of aging. This work is helpful to reveal the mechanism of aging on PU and the PU/catalyst/ash mixture in air environment.

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Experimental study of the active and passive regeneration procedures of a diesel particulate filter in a diesel methanol dual fuel engine

Cited by 48 publications

References 45 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

Experimental Investigation on the DPF High-Temperature Filtration Performance under Different Particle Loadings and Particle Deposition Distributions

Effect of Different Aging Conditions on the Soot Oxidation by Thermogravimetric Analysis

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