| 摘要 |
A honeycomb structure 1 includes: porous partition walls 6 having a large number of pores which are disposed to form a plurality of cells 5 functioning as exhaust gas flow passages between two end faces of the walls 6 , and plugged portions 7 formed by alternately plugging either end portion of the end faces of respective cells 5 . A whole structure of the honeycomb structure 1 is composed of honeycomb segments 2 which have been separated into two or more in a plane parallel to a central axis. The segments 2 includes a specific segment 2 X having properties different from those of general segments 2 a other than the specific segment 2 X, and additional plugged portions 8 are disposed in the unplugged opening end portions 7 which are not plugged among cells of the specific segment, thereby at least a part of exhaust gas flow is suppressed.
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