| 摘要 |
PROBLEM TO BE SOLVED: To provide a honeycomb structure which satisfies requirements in recent years for the improvement of warming-up performance in cleaning performances and for lowering of harmful substances discharged immediately after an engine is started and further, which has sufficient mechanical strengths against an outer pressure, resistance to erosion and high resistance to thermal impact. SOLUTION: In the honeycomb structure, a plurality of communication holes 3 perforating in the axial direction are formed by a plurality of partition walls 1 and 2. The plurality of partition walls 1 and 2 are constituted of a plurality of partition walls having different thicknesses, and the thick partition walls 2 thicker than the average thickness of the partition walls having different thicknesses are provided at a specific area in the whole area, where the partition walls are provided, at a relatively high rate in comparison with the other area. |
