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    초록·키워드

    Prediction of diesel particulate filtration necessitates appropriate models for pressure drop and particulate matter (PM) collection, and the models are not frequently deterministic, thus must be closed with certain parameters of much smaller scales typically determined experimentally. Included are soot cake permeability, soot cake density, soot density in filter wall, and percolation constant. Aiming at elucidating these essential parameters, the present study attempts the enhancement of DPF filtration model with non-linear description of soot cake regression, The model is properly validated with single channel DPF measurements. Effects of these parameters on the pressure drop, a direct measure of filtration quality, are estimates in a parametric manner and discussed in terms of filtration velocity. Conclusively, the extent of percolation constant is controlling pressure drops, and soot density in the filter wall is relatively important in deep-bed filtration regime. Filtration quality of the deep-bed mode is relatively less sensitive to particle size than soot cake regime.

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      UCI(KEPA) : I410-ECN-0101-2009-556-015137102