Modelling of diesel particulate filtration in wall-flow traps

Modeling and simulation of soot combustion dynamics in a catalytic diesel particulate filter

“…The exhaust gas enters the inlet channels and passes through the porous walls to adjacent outlet channels. This path allows PM, which is mostly made of carbonaceous particles called soot, to be retained in the inlet channels (Bensaid et al, 2009a(Bensaid et al, , 2009b. More specifically, the soot particles are first trapped inside the porous walls of the filter.…”

Effect of the morphological and surface properties of CeO2-based catalysts on the soot oxidation activity

“…This system has diameters in the range of few nanometers up to hundreds of nanometers, and even beyond [1,2], and is associated to several problems in terms of human respiratory diseases and environmental issues [3,4].…”

“…This structure involves a chessboard-like plugging of the square-section channels of the filter, in order to let the exhaust gases get into the open channels on the front area, pass through the porous walls which separate adjacent channels, and get out from filter rear. This path allows PM to be filtered by the wall surface, thus involving the progressive build up of a cake [1].…”

Diesel particulate filter design simulation: A review

“…Furthermore, one of the major tasks of online pressure measurement is to estimate the mass of the deposited soot. Assuming a uniform soot deposited in the inlet channel, which has been validated by experiments from Bensaid et al 22 and Koltsakis et al 52 (however, soot layer is thicker toward the outlet in Liati and Eggenschwiler. 53 This may be caused by high ash loading and ash re-entrainment), the mass of soot can be decided with a known soot layer density and permeability.…”