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A Numerical Study in a Quasi-2D DPF Model~Analysis of DPF States in Continuous, Active Regeneration and Filtering Efficiency
Published September 29, 2010 by Society of Automotive Engineers of Japan in Japan
A quasi-2-dimensional diesel particulate filter model for the inlet/outlet channels, and substrate, was constructed with modeling the multilayer DPF substrate to analyze the distributions of soot loading in/on the wall. The model can calculate amount of soot loading and filtering efficiency during continuous, active regenerations. As a result, soot cannot charge through the deep region of substrate, but in the shallow initially. After the pores of this region were occupied by soot. Soot cake is formed on the substrate. Thus, it is concluded that most soot in the wall is trapped in the surface layer. Moreover, we discussed numerical analysis results about the effect of active regeneration on soot loading, pressure loss and filtering efficiency.