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.

公开(公告)号：US20210270163A1

公开(公告)日：2021-09-02

申请号：US17151282

申请日：2021-01-18

Applicant: NGK Insulators, Ltd.

Inventor： Fumihiko YOSHIOKA ,  Nozomu HIRAI ,  Kyohei KATO

IPC: F01N3/022 ,  B01J35/04 ,  B01J35/10

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 55 to 65%, an average pore diameter of the partition wall measured by a mercury press-in method is 5 to 10 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 8 μm or less, the pore diameter value corresponding to a ⅓ value width of the maximum value.

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：US20210324772A1

公开(公告)日：2021-10-21

申请号：US17304889

申请日：2021-06-28

Applicant: NGK INSULATORS, LTD.

Inventor： Yukio MIYAIRI ,  Masaaki MASUDA ,  Kyohei KATO ,  Takafumi KIMATA ,  Kazuya HOSODA

IPC: F01N3/022 ,  B01D46/24

Abstract: A pillar shaped honeycomb structure, including: an outer peripheral wall; and porous partition walls disposed inside the outer peripheral wall, the partition walls defining a plurality of cells, each of the cells penetrating from one end face to other end face to form a flow path, wherein one or both of the one end face and the other end face includes a groove portion; and wherein at least one annular conductive loop containing a conductive material is embedded in the groove portion.

公开(公告)号：US20210293166A1

公开(公告)日：2021-09-23

申请号：US17303040

申请日：2021-05-19

Applicant: NGK INSULATORS, LTD.

Inventor： Yukio MIYAIRI ,  Masaaki MASUDA ,  Kyohei KATO ,  Norihiro WAKIDA

IPC: F01N3/022 ,  F01N3/28

Abstract: A pillar shaped honeycomb structure, including: a porous partition wall that define a plurality of cells, the plurality of cells forming flow paths for a fluid, the plurality of cells extending from an inflow end face to an outflow end face; and an outer peripheral wall located at the outermost circumference. The plurality of cells include: a plurality of first cells; and a plurality of second cells having a lower cross-sectional area than that of the plurality of first cells. An interior of each of the second cells is filled with a material comprising a magnetic substance. Each of the second cells are arranged adjacent to at least one of the first cells.

公开(公告)号：US20210115825A1

公开(公告)日：2021-04-22

申请号：US17136420

申请日：2020-12-29

Applicant: NGK INSULATORS, LTD.

Inventor： Yukio MIYAIRI ,  Takehide SHIMODA ,  Takashi AOKI ,  Hirofumi SAKAMOTO ,  Masaaki MASUDA ,  Atsuo KONDO ,  Yunie IZUMI ,  Kyohei KATO ,  Norihiro WAKITA

IPC: F01N3/022 ,  F01N3/28

Abstract: A pillar shaped honeycomb structure includes: a porous partition wall that defines a plurality of cells, the cells forming flow paths for a fluid, the cells extending from an inflow end face to an outflow end face; and an outer peripheral wall located at the outermost circumference. At least a part of surfaces of the partition walls has a surface layer, and the surface layer includes magnetic particles and has permeability.

公开(公告)号：US20210346880A1

公开(公告)日：2021-11-11

申请号：US17443118

申请日：2021-07-21

Applicant: NGK INSULATORS, LTD.

Inventor： Yukio MIYAIRI ,  Masaaki MASUDA ,  Kyohei KATO ,  Kazuya HOSODA ,  Takafumi KIMATA

IPC: B01J35/04 ,  B01J37/00 ,  B01D53/88 ,  C04B38/00 ,  B01J35/00

Abstract: A pillar shaped honeycomb structure, including: an outer peripheral wall; and a porous partition wall disposed inside the outer peripheral wall, the partition wall defining a plurality of cells, each of the cells extending from one end face to other end face to form a flow path, wherein the plurality of cells include two or more types of magnetic substances in which at least two of a maximum magnetic permeability, a Curie point, and an intrinsic resistance value are different.