Abstract
The process of particulate matter oxidation in hexagonal diesel particulate filters (HEX DPF) was numerically analyzed by one dimensional calculation model. The numerical results show that the distribution of a mass flow rate among Inlet/Outlet wall-through flows and bypass flows cause the change of the relationship between heat release rate and convective heat transport on the Inlet/Outlet walls and Inlet/Inlet walls. The maximum temperature of HEX DPF during regeneration process is suppressed by this change of relationship.