公开(公告)号：US20230347275A1

公开(公告)日：2023-11-02

申请号：US18177376

申请日：2023-03-02

Applicant: NGK Insulators, Ltd.

Inventor： Fumihiko YOSHIOKA ,  Yuji SASAKI ,  Yasuyuki FURUTA ,  Ritsuko TERANISHI ,  Ayaka SAKAI ,  Tatsuya OHASHI

IPC: B01D46/24

CPC classification number: B01D46/24492 ,  B01D46/24491 ,  B01D46/2459 ,  B01D46/247 ,  B01D46/2482 ,  B01D46/249 ,  B01D46/2494

Abstract: A honeycomb filter comprising a pillar-shaped honeycomb structure body having a porous partition wall and a plugging portion, wherein, in a pore diameter distribution of the partition wall, in the case where the pore diameter (µm) whose cumulative pore volume is 10% of the total pore volume is denoted by D10, the pore diameter (µm) whose cumulative pore volume is 50% of the total pore volume is denoted by D50, and the pore diameter (µm) whose cumulative pore volume is 90% of the total pore volume is denoted by D90, all of the following equations (1) to (6) are satisfied.







8
.4
μ
​
m

公开(公告)号：US20170274554A1

公开(公告)日：2017-09-28

申请号：US15453088

申请日：2017-03-08

Applicant: NGK INSULATORS, LTD.

Inventor： Akifumi KAWAKAMI ,  Yuji SASAKI ,  Mitsuhiro ITO ,  Yukiharu MORITA

IPC: B28B3/20 ,  B28B11/14 ,  B28B11/24

CPC classification number: B28B3/20 ,  B01J35/04 ,  B28B3/269 ,  B28B11/14 ,  B28B11/241 ,  B28B11/243 ,  B28B2003/203 ,  B32B1/08 ,  F01N3/0222 ,  F01N3/26 ,  F01N3/2828 ,  F01N2330/06 ,  F01N2330/60 ,  F01N2340/00 ,  Y02T10/20

Abstract: A honeycomb structure has a pillar-shaped honeycomb structure body having porous partition walls which defines cells which forms a passage of liquid extended from an inflow end face toward an outflow end face, a circumferential wall arranged to surround a circumference of the partition walls. The honeycomb structure body has an outermost circumference cell structure including a complete cell arranged at the outermost circumference of the honeycomb structure body, a center cell structure formed by the cells arranged at a center part at an inner side to the outermost circumference cell structure, and a boundary wall arranged at a boundary part between the outermost circumference cell structure and the center cell structure. The outermost circumference cell structure and the center cell structure are formed as different structures to each other, and a thickness of the boundary wall is set to be thicker than a thickness of the circumferential wall.

公开(公告)号：US20190352236A1

公开(公告)日：2019-11-21

申请号：US16385439

申请日：2019-04-16

Applicant: NGK Insulators, Ltd.

Inventor： Akifumi KAWAKAMI ,  Takashi KINOSHITA ,  Yuji SASAKI ,  Mitsuhiro ITO

IPC: C04B38/00 ,  B01D46/24 ,  B01D53/94 ,  B01J35/04 ,  F01N3/28

Abstract: A pillar-shaped honeycomb structure body of a honeycomb structure includes a circumferential cell structure, a central cell structure and a boundary wall therebetween. On a surface orthogonal to the cells there are a circumferential reinforcing region having the partition wall thicker than a basic partition wall thickness in the circumferential cell structure and existing outside a range of a distance from a centroid of the surface; and at least one of a first boundary reinforcing region having the partition wall thicker than the basic partition wall thickness and existing in a range of a distance from the centroid within a range of the circumferential cell structure and a second boundary reinforcing region having the partition wall thicker than a basic partition wall thickness in the central cell structure and existing outside of a range of a distance from the centroid within a range of the central cell structure.

公开(公告)号：US20210268424A1

公开(公告)日：2021-09-02

申请号：US17151278

申请日：2021-01-18

Applicant: NGK Insulators, Ltd.

Inventor： Fumihiko YOSHIOKA ,  Yuji SASAKI ,  Kimiko KISHINE ,  Sachiko ISHIDA ,  Kyohei KATO

IPC: B01D46/24 ,  B01D39/20 ,  B01D53/94 ,  B01J21/04 ,  B01J35/04 ,  B01J35/10 ,  F01N3/022 ,  F01N3/28

Abstract: A honeycomb filter includes a pillar-shaped honeycomb structure body having a porous partition wall disposed to surround a plurality of cells and a plugging portion, wherein the partition wall is composed of a material containing cordierite as a main component thereof, porosity of the partition wall measured by a mercury press-in method is 60 to 68%, an average pore diameter of the partition wall measured by a mercury press-in method is 13 to 18 μm, and in a pore diameter distribution indicating a cumulative pore volume of the partition wall measured by a mercury press-in method, with a pore diameter (μm) on an abscissa axis and a log differential pore volume (cm3/g) on an ordinate axis, a first peak including a maximum value of the log differential pore volume has a pore diameter value of 15 μm or less, the pore diameter value corresponding to a ⅓ value width of the maximum value.

公开(公告)号：US20210268423A1

公开(公告)日：2021-09-02

申请号：US17151255

申请日：2021-01-18

Applicant: NGK Insulators, Ltd.

Inventor： Fumihiko YOSHIOKA ,  Yuji SASAKI ,  Kimiko KISHINE ,  Sachiko ISHIDA ,  Kyohei KATO

IPC: B01D46/24 ,  B01D53/94 ,  B01D39/20 ,  B01J35/04 ,  B01J35/10 ,  B01J21/04 ,  F01N3/28 ,  F01N3/022

Abstract: A honeycomb filter includes a pillar-shaped honeycomb structure body having a porous partition wall disposed to surround a plurality of cells and a plugging portion, wherein the partition wall is composed of a material containing cordierite as a main component thereof, porosity of the partition wall measured by a mercury press-in method is 60 to 68%, an average pore diameter of the partition wall measured by a mercury press-in method is 8 to 12 and in a pore diameter distribution which indicates a cumulative pore volume of the partition wall measured by a mercury press-in method, with a pore diameter (μm) on an abscissa axis and a log differential pore volume (cm3/g) on an ordinate axis, a first peak that includes a maximum value of the log differential pore volume has a pore diameter value of 10 μm or less, the pore diameter value corresponding to a ⅓ value width of the maximum value.

公开(公告)号：US20210270172A1

公开(公告)日：2021-09-02

申请号：US17151262

申请日：2021-01-18

Applicant: NGK Insulators, Ltd.

Inventor： Fumihiko YOSHIOKA ,  Yuji SASAKI ,  Kimiko KISHINE ,  Sachiko ISHIDA ,  Kyohei KATO

IPC: F01N3/28 ,  B01J35/10 ,  B01J35/04

Abstract: A honeycomb filter includes a pillar-shaped honeycomb structure body having a porous partition wall disposed to surround a plurality of cells and a plugging portion, wherein the partition wall is composed of a material containing cordierite as a main component thereof, porosity of the partition wall measured by a mercury press-in method is 60 to 68%, an average pore diameter of the partition wall measured by a mercury press-in method is 19 to 26 μm, and in a pore diameter distribution indicating a cumulative pore volume of the partition wall measured by a mercury press-in method, with a pore diameter (μm) on an abscissa axis and a log differential pore volume (cm3/g) on an ordinate axis, a first peak including a maximum value of the log differential pore volume has a pore diameter value of 18 μm or less, the pore diameter value corresponding to a ⅓ value width of the maximum value.