Abstract
The particulate matter (PM) discharged from the diesel engine is collected by a diesel particulate filter (DPF) and then removed. Deterioration of fuel consumption is a serious problem since exhaust gas temperature must be increased when PM removal is performed. In this study, the numerical computation for both the behavior of PM distribution in the DPF during PM deposition-regeneration process and the heat distribution in the DPF was performed. The temperature-distribution and its change in DPF as a function of the time during PM combustion were calculated by a newly developed model. It was concluded that the amount of increasing temperature change was far larger backside in direction than that near the entrance of an inflow way. The present model can be used for optimal designing of DPF with a catalyst by assuming several operation modes of DPF device before an experimental approach.
