Morphology, physical, thermal and mechanical properties of the constitutive materials of diesel particulate filters

Benaqqa, C.; Gomina, Moussa; Beurotte, Arnaud; Boussuge, Michel; Delattre, Benoit; Pajot, K.; Pawlak, Edouard; Rodrigues, Fabiano

doi:10.1016/j.applthermaleng.2013.10.024

Cited by 36 publications

(13 citation statements)

References 5 publications

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“…In this study, the clean wall porosity was calibrated to be 0.5 based on experimental observations of the thermal mass of the DPF studied by Rothe et al [7] . This value is within the range found in literature [19]. The pore diameter was calibrated based on experimentally observed filtration efficiency during loading.…”

Section: Unit Collector Modelsupporting

confidence: 68%

“…The clean filtration efficiency predicted by the unit collector model is controlled by the thickness, porosity and the pore diameter of the porous wall. Based on the thermal expansion coefficient of SiC [19], the volumetric strain of the porous wall during regeneration is estimated to be 0.16%. It is expected that the change in the wall thickness and the wall porosity will be of the same order of magnitude.…”

Section: Pore Expansionmentioning

confidence: 99%

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Modelling particle mass and particle number emissions during the active regeneration of diesel particulate filters

Lao¹,

Akroyd²,

Eaves³

et al. 2019

Proceedings of the Combustion Institute

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A new model has been developed to describe the size-dependent effects that are responsible for transient particle mass (PM) and particle number (PN) emissions observed during experiments of the active regeneration of Diesel Particulate Filters (DPFs). The model uses a population balance approach to describe the size of the particles entering and leaving the DPF, and accumulated within it. The population balance is coupled to a unit collector model that describes the filtration of the particles in the porous walls of the DPF and a reactor network model that is used to describe the geometry of the DPF. Two versions of the unit collector model were investigated. The original version, based on current literature, and an extended version, developed in this work, that includes terms to describe both the non-uniform regeneration of the cake and thermal expansion of the pores in the DPF. Simulations using the original unit collector model were able to provide a good description of the pressure drop and PM filtration efficiency during the loading of the DPF, but were unable to adequately describe the change in filtration efficiency during regeneration of the DPF. The introduction of the extended unit collector description enabled the model to describe both the timing of particle breakthrough and the final steady filtration efficiency of the hot regenerated DPF. Further work is required to understand better the transient behaviour of the system. In particular, we stress the importance that future experiments fully characterise the particle size distribution at both the inlet and outlet of the DPF.

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Section: Unit Collector Modelsupporting

confidence: 68%

Section: Pore Expansionmentioning

confidence: 99%

Modelling particle mass and particle number emissions during the active regeneration of diesel particulate filters

Lao¹,

Akroyd²,

Eaves³

et al. 2019

Proceedings of the Combustion Institute

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show abstract

“…Existing DPFs consist of channels with a honeycomb structure, allowing flow through the channels and providing a more specific area [3]. Based on this phenomenon, the middle layer of the flexible composite is applied with a spacious and dynamic system called diesel particulate filters (DPF).…”

Section: N Materials and Methodsmentioning

confidence: 99%

Ceramic and Glass Fibre Reinforced Flexible Composites for Particulate Filter Walls – A Novel Approach

Prabu¹,

Srinivasan

Prakash³

2019

Fibres and Textiles in Eastern Europe

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Flexible composites from high performance fibres were developed and targeted to replace the wall of existing rigid ceramic Particulate Filters. The composites are made from E Glass fibre webs of different density in the middle, with standard SiC Ceramic fibres webs in in the outer layers, forming a sandwich structure. Different needling densities were applied to form nonwoven composites, and they were stitched diagonally on the surface at specified intervals with continuous glass fibre filament yarn. In total, nine novel flexible composites were developed and evaluated for their structural, surface, mechanical and thermal properties. Based on the results and statistical analysis, the B2 sample is considered to be taken for further research to develop Particulate Matter (PM) filters.

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“…SiC membranes were shown to exhibit advantageous properties for gas separation [3][4][5]. SiC was also tried in diesel fuel particulate filters [6,7] and the carbide ceramic microreactors were investigated for hydrogen gas production [8,9]. In another approach, SiC was used as a support for the Ni catalyst in methane reforming to synthetic gas [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Preparation of silicon carbide SiC-based nanopowders by the aerosol-assisted synthesis and the DC thermal plasma synthesis methods

Czosnek

Bućko

Janik

et al. 2015

Materials Research Bulletin

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Morphology, physical, thermal and mechanical properties of the constitutive materials of diesel particulate filters

Cited by 36 publications

References 5 publications

Modelling particle mass and particle number emissions during the active regeneration of diesel particulate filters

Modelling particle mass and particle number emissions during the active regeneration of diesel particulate filters

Ceramic and Glass Fibre Reinforced Flexible Composites for Particulate Filter Walls – A Novel Approach

Preparation of silicon carbide SiC-based nanopowders by the aerosol-assisted synthesis and the DC thermal plasma synthesis methods

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