Model-Based Analysis of TWC-Coated Filters Performance

Modeling the Catalytic Performance of Coated Gasoline Particulate Filters under Various Operating Conditions

“…Holder et al, 9 Ramanathan and co-workers, 11,14 Weilenmann, 15 Della Torre et al, 12 and Okajima et al 45 Mitsouridis et al 27 control oriented real-time oxygen storage dynamics Auckenthaler et al, 28 Kumar et al, 46 Bickel et al, 29 Guardiola et al, 47 and Schurholz et al 30 Arunachalam et al 48 a…”

Global Kinetic Model of a Three-Way-Catalyst-Coated Gasoline Particulate Filter: Catalytic Effects of Soot Accumulation

“…Therefore, in order to comply with current and future PM/PN limits, it is very likely that car manufacturers will equip gasoline-powered vehicles with gasoline particulate filters (GPFs). It is likely that the most economical way to use this technology in a gasoline exhaust system is by combining TWC + GPF in one single device (referred to as a catalyzed gasoline particulate filter (cGPF), or four-way catalyst). , This technology consists of a TWC catalytic material impregnated on the porous walls of the particle filter. This system configuration may bring potential benefits in terms of vehicle system configuration and overall cost .…”

“…In this case, the system will be colder and will tend to trap more soot . Some research work has already been done for cGPF technology, and it is expected to be adopted extensively in the future. ,,− However, cGPFs need to take into account both the effect of soot and ash loading. It is well documented that the TWC functionality of cGPFs is affected in the presence of ash. ,, In an earlier publication, the catalytic performance of soot-free and soot-loaded samples was compared under different feed temperatures and feed gas mixtures.…”

“…Some research work has already been done for cGPF technology, and it is expected to be adopted extensively in the future. ,,− However, cGPFs need to take into account both the effect of soot and ash loading. It is well documented that the TWC functionality of cGPFs is affected in the presence of ash. ,, In an earlier publication, the catalytic performance of soot-free and soot-loaded samples was compared under different feed temperatures and feed gas mixtures. It was demonstrated that the soot accumulation on cGPFs has a large effect on the gaseous pollutant conversion due to the deposition of soot onto their active sites.…”

“…It is well documented that the TWC functionality of cGPFs is affected in the presence of ash. 13,17,20 In an earlier publication, 21 the catalytic performance of soot-free and soot-loaded samples was compared under different feed temperatures and feed gas mixtures. It was demonstrated that the soot accumulation on cGPFs has a large effect on the gaseous pollutant conversion due to the deposition of soot onto their active sites.…”