| 摘要 |
<p>A honeycomb structure 1 includes: porous partition walls 6 having a large number of pores and disposed so as to form a plurality of cells 5 functioning as exhaust gas flow passages between two end faces, and plugged portions 7 disposed so as to alternately plug either one of the opening end portions of the cells 5 on the two end faces, and has a constitution in which honeycomb segments 2 having a shape of a part of the whole structure separated into two or more in a plane parallel to a central axis are joined to form the whole structure. The honeycomb segments 2 includes a specific segment 2X having properties different from those of general segments 2a other than the specific segment 2X in at least a part of the honeycomb segments 2, and additional plugged portions 8 are disposed in the opening end portions (unplugged opening end portions) having no plugged portion 7 being disposed of the plurality of cells of the specific segment so as to suppress flowing of at least a part of the exhaust gas into the unplugged opening end portions. The honeycomb structure is excellent in thermal dispersibility upon heating, and damage due to thermal stress is effectively prevented as well as a special function can be exhibited by a honeycomb segment to which properties (specificity) different from those of general segments are imparted.</p> |
