Invention Grant
US07101601B2 Exhaust gas purifying filter with reinforced peripheral area and method for manufacturing the same 失效
具有增强周边区域的废气净化过滤器及其制造方法

Exhaust gas purifying filter with reinforced peripheral area and method for manufacturing the same
Abstract:
An exhaust gas purifying filter having a high strength and an excellent efficiency of exhaust gas purification and a method for manufacturing the same are provided. An exhaust gas purifying filter 1 comprises a ceramic honeycomb structure 2 having a surrounding wall 21, partition walls 22 provided in a honeycomb pattern within the surrounding wall 21, and a plurality of cells 23 partitioned by the partition walls 22 and penetrating through end faces 241, 242. If a virtual line 3 is drawn on the end faces 241, 242 of the structure 2 by continuously connecting points at a distance of 1.0 to 3.0 times the cell pitch in the direction toward the center from an inner surface 211 of the surrounding wall 21, not less than 90% of a peripheral area 25 outside the virtual line 3 is blocked with plug material 4.
Information query
Patent Agency Ranking
0/0