Honeycomb structural body
AssigneeIbiden Co., Ltd.
InventorsTeruo Komori, Kazushige Ohno, Sungtae Hong, Yukio Oshimi
Life of this patent
Estimating the term…
Abstract
A honeycomb structural body includes a columnar honeycomb structural body having large-capacity through holes and small-capacity through holes extending in parallel in a length direction of the columnar structural body. The large-capacity through holes and the small-capacity through holes have a polygonal shape in a cross section perpendicular to the length direction, and the large-capacity through holes and the small-capacity through holes have R-chamfered corner portions or C-chamfered corner portions in the cross section perpendicular to the length direction.
Claims14
An exhaust gas filter comprising:
- a honeycomb structural body comprising a ceramic material and having a plurality of large-capacity through holes and a plurality of small-capacity through holes extending in parallel in a length direction of the honeycomb structural body, the honeycomb structural body having a wall portion separating the large-capacity through holes and the small-capacity through holes, the large-capacity through holes being open on an inlet side of the honeycomb structural body and sealed by a sealing material on an outlet side of the honeycomb structural body and the small-capacity through holes being open on the outlet side and sealed by the sealing material on the inlet side such that an exhaust gas flows into the large-capacity through holes, passes through the wall portion and is discharged from the small-capacity through holes,
- wherein the plurality of large-capacity through holes and the plurality of small-capacity through holes have polygonal shapes in a cross section perpendicular to the length direction, and the plurality of large-capacity through holes and the plurality of small-capacity through holes have R-chamfered corner portions or C-chamfered corner portions in the cross section perpendicular to the length direction.
An exhaust gas filter comprising:
- a honeycomb structural body comprising a ceramic material and having a plurality of large-capacity through holes and a plurality of small-capacity through holes extending in parallel in a length direction of the honeycomb structural body, the honeycomb structural body having a wall portion separating the large-capacity through holes and the small-capacity through holes, the large-capacity through holes being open on an inlet side of the honeycomb structural body and sealed by a sealing material on an outlet side of the honeycomb structural body and the small-capacity through holes being open on the outlet side and sealed by the sealing material on the inlet side such that an exhaust gas flows into the large-capacity through holes, passes through the wall portion and is discharged from the small-capacity through holes,
- wherein each of the large-capacity through holes has a cross-section area which is larger than a cross-section area of each of the small-capacity through holes, and each of the large-capacity through holes has a square shape in a cross section perpendicular to the length direction and is provided with a curved shape in corner portions of the square shape in the cross section perpendicular to the length direction.
Dependencies are inferred from the claim text.