PLUGGED HONEYCOMB STRUCTURE

摘要

There is disclosed a plugged honeycomb structure. A plugged honeycomb structure includes a honeycomb structure body of a segment structure and plugging portions disposed in open ends of cells formed in the honeycomb structure body, the honeycomb structure body has outer segments and inner segments disposed on an inner side than the outer segments in a cross section of the honeycomb structure body, and a material constituting the outer segments has a smaller heat capacity per unit volume than a material constituting the inner segments.

主权项

1. A plugged honeycomb structure comprising:
a honeycomb structure body having a plurality of pillar-shaped honeycomb segments each having porous partition walls defining a plurality of cells which become through channels for a fluid and extend from a first end face to a second end face, and a bonding layer to bond the plurality of honeycomb segments to one another so that side surfaces of the honeycomb segments face one another; and plugging portions disposed in open ends of the predetermined cells in the first end face and open ends of the residual cells in the second end face of the honeycomb structure body, wherein the honeycomb structure body has, as the plurality of honeycomb segments, outer segments disposed on a circumferential side of the honeycomb structure body in a cross section vertical to an extending direction of the cells and inner segments disposed on an inner side than the outer segments in the cross section, and a material constituting the outer segments has a smaller heat capacity per unit volume than a material constituting the inner segments.