| abstract |
Provided is a particulate collection filter capable of effectively preventing damage due to thermal stress that occurs during regeneration without causing an increase in pressure loss or a decrease in PM collection efficiency. SOLUTION: A plurality of honeycomb segments 3 are provided with a honeycomb structure 2 integrally joined by a joining material 12, and after the exhaust gas flowing into the cell 7 from the inlet end face permeates the partition wall 8, the outlet end face is obtained. The particulate collection filter has a structure that flows out of the cell 7 from the cell 7, and the partition wall 8 is made of a material mainly composed of SiC, and is formed on the surface of the partition wall 8 on the inlet side of the exhaust gas that passes through the partition wall 8. At least one of the average opening diameter of the open pores and the average opening diameter of the pores opening on the surface of the partition wall 8 on the outlet side of the exhaust gas passing through the partition wall 8 is 0.1 to The fine particle collection filter 1 which is 5 micrometers, the average pore diameter of the whole partition 8 is 10-30 micrometers, and the thermal conductivity in the room temperature of the partition 8 is 80-110 W / mK. [Selection] Figure 1 |