Experimental measurement of the filtration efficiency and pressure drop of wall-flow diesel particulate filters (DPF) made of biomorphic Silicon Carbide using laboratory generated particles

Orihuela, M. Pilar; Gómez-Martín, Aurora; Miceli, Paolo; Becerra, J. A.; Chacartegui, Ricardo; Fino, Debora

doi:10.1016/j.applthermaleng.2017.11.149

Cited by 46 publications

(21 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In that study, two small prototypes of bioSiC wall-flow filters were manufactured from MDF, and tested under controlled conditions in a laboratory test rig, with a soot laden gas stream. The description of the samples, the test rig, and the experimental procedure, can be found in [33]. Here, only the parameters relevant to the model are reported.…”

Section: Experimental Validation and Model Calibration For A Biosic Dpfmentioning

confidence: 99%

“…The soot particle size distribution, characterized by the mean particle diameter and the standard deviation, was directly observed from the experimental particle size distribution curve of the soot generator, as shown in Figure 4. The soot aggregate structure of the aerosol produced by the soot generator, can be characterized by the following parameters [33]: fractal dimension = 2.1 [49], soot primary particle radius = 6 × 10 m [50], and soot primary particle density = 1700 kg m ⁄ [51]. As mentioned before, the numerical model used in this study was solved with the aid of the commercial software Axisuite [40].…”

Section: Experimental Validation and Model Calibration For A Biosic Dpfmentioning

confidence: 99%

“…For the porosity and the mean pore diameter, the values reported by Gomez-Martin et al [31], were considered. For the initial permeability of the clean substrate, which may be dependent on the relative orientation of the wood fibers, with respect to the direction of the gas flow, the value 4·10 −14 m 2 was taken, calculated in a previous experimental study [33]. For the remaining physical or chemical parameters of the substrate, standard values for silicon carbide, with 44% porosity, and 9 µm mean pore size, were selected [43].…”

Section: Experimental Validation and Model Calibration For A Biosic Dpfmentioning

confidence: 99%

“…Recent studies have presented biomorphic silicon carbide (bioSiC) as a viable candidate for use as a substrate in hot gas filtration applications [31,32] and, specifically, as a substrate in DPFs for automotive diesel engines [33]. BioSiC is a porous bioceramic material characterized by preserving the hierarchical biological microstructure of the wood precursor from which it was made [34] so it is considered a bio waste or biomass.…”

Section: Introductionmentioning

confidence: 99%

“…The validation of the model was made in a small prototype of bioSiC wall-flow DPF. It was designed, manufactured, and tested under controlled conditions, with the aid of a soot generator [33]. The resulting experimental measurements of filtration efficiency and pressure drop were then used to calibrate the real scale model, with the adjusted microstructural parameters to simulate the performance under NEDC driving cycle conditions.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Numerical Simulation of a Wall-Flow Particulate Filter Made of Biomorphic Silicon Carbide Able to Fit Different Fuel/Biofuel Inputs

et al. 2019

Self Cite

View full text Add to dashboard Cite

To meet the increasingly strict emission limits imposed by regulations, internal combustion engines for transport applications require the urgent development of novel emission abatement systems. The introduction of biodiesel or other biofuels in the engine operation is considered to reduce greenhouse gas emissions. However, these alternative fuels can affect the performance of the post-combustion systems due to the variability they introduce in the exhaust particle distribution and their particular physical properties. Bioceramic materials made from vegetal waste are characterized by having an orthotropic hierarchical microstructure, which can be tailored in some way to optimize the filtration mechanisms as a function of the particle distribution of the combustion gases. Consequently, they can be good candidates to cope with the variability that new biofuel blends introduce in the engine operation. The objective of this work is to predict the filtration performance of a wall-flow particulate filter (DPF) made of biomorphic silicon carbide (bioSiC) with a systematic procedure that allows to eventually fit different fuel inputs. For this purpose; a well-validated DPF model available as commercial software has been chosen and adapted to the specific microstructural features of bioSiC. Fitting the specific filtration and permeability parameters of this biomaterial into the model; the filtration efficiency and pressure drop of the filter are predicted with sufficient accuracy during the loading test. The results obtained through this study show the potential of this novel DPF substrate; the material/microstructural design of which can be adapted through the selection of an optimum precursor.

show abstract

Section: Experimental Validation and Model Calibration For A Biosic Dpfmentioning

confidence: 99%