Patent ID: 11878258
Assignee: DENSO CORPORATION
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  F | IPC B

Claim 0:
1. An exhaust gas purification filter comprising:
a plurality of cells extending in a filter axial direction;
a porous partition separating and defining the plurality of cells; and
a sealing section sealing the plurality of cells alternately at both filter ends,
wherein the porous partition has a void volume of a reduced dale, Vvv, and a material volume of a reduced peak, Vmp, being volume parameters determined in noncontact surface roughness measurement on a surface of the porous partition, with a total value of the volume Vvv and the volume Vmp being 1.1 μm3/μm2 or more and 1.8 μm3/μm22 or less, the total value of the volumes Vvv and Vmp of the surface of the porous partition being within a range so as to provide a configuration that a shearing force exceeds a bonding strength between the surface of the porous partition and wall ash components, the shearing force being a force caused by exhaust gas in the filter axial direction, and the wall ash components being ash components accumulated on the surface of the porous partition.