Patent ID: 6421915
Filing Date: 2002-07-23
Classification: B01J,F01N,Y02A,Y10T

Abstract:
A method for fixing a hexagonal-cell honeycomb structure having a plurality of cell passages of hexagonal cross-sectional shape to a casing, whereina C-axis direction is formed by connecting a pair of vertexes of a hexagonal cell in the plane of a sectional view of the hexagonal-cell honeycomb, facing each other and such that each hexagonal cell becomes symmetrical with respect to the axis, a B-axis direction is formed in the plane of a sectional view of the hexagonal-cell honeycomb and perpendicular to the C-axis, and a partition wall angle is an angle formed by (1) one side of the hexagonal cell intersecting the C-axis of the honeycomb and (2) the B-axis of the honeycomb, which method comprises fixing the casing the circumference of the structure of the casing mainly in the C-axis direction when the partition wall angle of each cell is larger than 30Â°.