Patent ID: 8657914
Filing Date: 2014-02-25
Classification: B01D,F01N,Y02T

Abstract:
1. An exhaust gas purifying filter comprising: an inflow surface into which exhaust gas including particulate matter flows; an exhaust surface which exhausts purified gas; and a filter substrate which is constructed of a porous body, in which the filter substrate includes a porous partition and a gas passage which is enclosed by the porous partition, and a porous film which includes silicon carbide is provided on a surface of the porous partition, wherein in a pore diameter distribution of the porous film, pores with the pore diameter of 0.01 μm or more and 3.0 μm or less are 70% or more of total volume of the pores, and pores with the pore diameter of 0.01 μm or more and 0.3 μm or less are 5% or more and 90% or less of total volume of the pores, the pore diameter distribution having a peak in the range of 0.01 μm or more and 0.3 μm or less and a range of 0.3 μm or more and 3.0 μm or less.