A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
An exhaust gas purification filter includes a cell assembly (2), seal members (11), and a skin member (12). The cell assembly (2) having an outer surface and including: a plurality of cells (21) each disposed to extend in an axial direction (Y) of the filter, each of the cells having opposing first and second ends (211, 222) in the axial direction, and a partition wall (22) configured to have a porous structure and define the plurality of cells partitioned from each other in a grid pattern. The skin member (12) is configured to have a tubular shape and be mounted on the outer surface of the cell assembly. The partition wall has a porosity of 50% to 70%. The skin member has a thickness (T) of 0.3mm to 1.0 mm. The partition wall includes a plurality of crossing portions (225), each of the cells (21) has at least one part of an outer periphery (213) defined by a corresponding one of the crossing portions, the at least one part of the outer periphery of each of the cells is rounded to have a value of radius of curvature (R) being 0.02mm to 0.6 mm. A degree of distortion (δ), which is a degree of change in the external dimensions of the exhaust gas purification filter in the axial direction, is greater than 0 and is 1.5 mm or less. A value of a structural variable (X), expressed by Equation 1 below, is 0.05 to 6, X = T × R / δ ... Equation 1.
An exhaust gas purification filter includes a cell assembly (2), seal members (11), and a skin member (12). The cell assembly (2) having an outer surface and including: a plurality of cells (21) each disposed to extend in an axial direction (Y) of the filter, each of the cells having opposing first and second ends (211, 222) in the axial direction, and a partition wall (22) configured to have a porous structure and define the plurality of cells partitioned from each other in a grid pattern. The skin member (12) is configured to have a tubular shape and be mounted on the outer surface of the cell assembly. The partition wall has a porosity of 50% to 70%. The skin member has a thickness (T) of 0.3mm to 1.0 mm. The partition wall includes a plurality of crossing portions (225), each of the cells (21) has at least one part of an outer periphery (213) defined by a corresponding one of the crossing portions, the at least one part of the outer periphery of each of the cells is rounded to have a value of radius of curvature (R) being 0.02mm to 0.6 mm. A degree of distortion (δ), which is a degree of change in the external dimensions of the exhaust gas purification filter in the axial direction, is greater than 0 and is 1.5 mm or less. A value of a structural variable (X), expressed by Equation 1 below, is 0.05 to 6, X = T × R / δ ... Equation 1.
EXHAUST GAS PURIFICATION FILTER
ABGASREINIGUNGSFILTER
FILTRE DE PURIFICATION DE GAZ D'ÉCHAPPEMENT
ASAOKU KANA (author)
2022-03-16
Patent
Electronic Resource
English