Ngk Insulators, Inc.

Hyundai Motor Company

Kia Motors Corporation

Tetsuo Toyoshima

Akira Takahashi

Yuichi Hamazaki

Won Soon Park

Jung Min Seo

Jung Wook Seo

Reiji Matsubara

A sealed honeycomb structure may include porous walls dividedly forming inlet cells and outlet cells extending from an end surface of an inlet side to an end surface of an outlet side, an outlet side sealing portion, and an inlet side sealing portion, wherein at least one outlet cell is a reinforced cell, where a reinforced part for reinforcing the outlet cell is formed at at least one corner portion at which the walls on a cross-section vertical to an extending direction of the cell cross each other, and wherein the inlet cell is a non-reinforced cell where the reinforced part is not formed at all the corner portions at which the walls on the cross-section vertical to the extending direction of the cell cross each other.

Sealed honeycomb structure

A sealed honeycomb structure may include porous walls dividedly forming inlet cells and outlet cells extending from an end surface of an inlet side to an end surface of an outlet side, inlet and outlet side sealing portion, and an inlet side sealing portion, wherein at least one outlet cell is a reinforced cell where a reinforcing partfor reinforcing the outlet cellis formed at at least one corner portionat which the walls on a cross-section vertical to an extending direction of the cell cross each other, wherein the inlet cell is a non-reinforced cell where the reinforcing part is not formed at all the corner portions at which the walls on the cross-section vertical to the extending direction of the cell cross each other, and wherein the reinforcing partsof the reinforced cellsare formed at a section of the honeycomb structure from the end surface of the outlet side in the extending direction of the cell.

A honeycomb structure has porous partition walls defining and forming a plurality of cells communicating between two end faces, and a circumferential wall formed integrally with the partition walls. The cells include partial cells positioned in an outermost circumferential portion of the honeycomb structure and being partially in contact with the circumferential wall, and normal cells other than the partial cells. As to the normal cells, a plugging portion is formed in one end portion of each normal cell, and as to the partial cells, in the partial cells in which the plugging portion to be formed in one end portion thereof, the plugging portion is not formed in at least a part of a partial cell in which an area ratio obtained by Equation (1) is smaller than 80%:the area ratio(%)=an area of the partial cell/an area of the normal cell&#xd7;100&#x2003;&#x2003;(1).

Plugged honeycomb structure

A sealed honeycomb structure which can suppress increase of pressure loss and improve durability favorably is disclosed. A sealed honeycomb structureincluding includes a honeycomb structure having porous walls dividedly forming inlet cells and outlet cells, an outlet side sealing portion, and an inlet side sealing portion, wherein an opening area of the inlet cell is larger than an opening area of an outlet cell on a cross-section of the honeycomb structure, wherein at least one outlet cell is a reinforced cell where a reinforcing part for reinforcing the outlet cell is formed at at least one corner portion at which the walls on a cross-section vertical to an extending direction of the cell cross each other, and wherein the inlet cell is a non-reinforced cell where the reinforcing part is not formed at all the corner portions at which the walls on the cross-section vertical to the extending direction of the cell cross each other.

Sealed honeycomb structure and device for cleaning exhaust

A honeycomb structure according to an aspect of the present invention includes a segment part including a plurality of first honeycomb segments having a plurality of through holes passing through along an one axis; and a plurality of second honeycomb segments arranged in the periphery of the segment part having a plurality of through holes passing through along the one axis. A cross sectional area of the first honeycomb segments is smaller than the cross sectional area of the second honeycomb segments in the cross section perpendicular to the one axis.

Growing community of inventors

Nagoya, Japan

Tetsuo Toyoshima