Exhaust gas purification filter, exhaust gas purifier, and method of using exhaust gas purifier
Abstract:
An exhaust gas purification filter includes: a honeycomb structure body having partition walls for defining a plurality of cells that extend from an inflow end face to an outflow end face; an inflow side plugging portion; an outflow side plugging portion; and a porous surface trapping layer which is disposed on an inflow surface which is a surface on an inflow cell side which is the cell in which the outflow side plugging portion is disposed, among surfaces of the partition walls, in which the surface trapping layer has a thickness of 10 to 60 μm and an average pore diameter of 0.3 to 5 μm, and in a section which is parallel to a cell extending direction.
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