| abstract |
A wall flow type exhaust gas purifying filter having excellent heat resistance and capable of suppressing pressure loss at the initial stage and during PM deposition in exhaust gas treatment while maintaining high collection efficiency of particulate matter in the exhaust gas. I will provide a. SOLUTION: One side of an inlet opening cell 2a having a honeycomb structure portion and a plugging portion 3 and having a substantially hexagonal cross section and one side of an outlet opening cell 2b having a substantially square cross section are substantially the same. A partition wall that has the same length, is adjacent to each other in parallel, has four inlet opening cells 2a surrounding one outlet opening cell 2b, and forms the first side 11 of the outlet opening cell 2b. 1 and the partition wall 1 forming the second side 12 facing each other, the distance a is in the range of more than 0.8 mm and less than 2.4 mm, and forms the third side 13 of the inlet opening cell 2a. The ratio of the distance b, which is the distance between the partition wall 1 to be formed and the partition wall 1 that forms the opposing fourth side 14, to the distance a is in the range of more than 0.4 and less than 1.1. Purification filter 10. [Selection] Figure 3 |