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：US20190301325A1

公开(公告)日：2019-10-03

申请号：US16356204

申请日：2019-03-18

Applicant: NGK Insulators. Ltd. ,  Honda Motor Co., ltd.

Inventor： Fumihiko YOSHIOKA ,  Yoshiaki HATEKAYAMA ,  Noritaka MASUMITSU

IPC: F01N3/022 ,  B01J35/04 ,  B01J23/42

Abstract: A honeycomb filter, including: a honeycomb structure, wherein the honeycomb structure includes a platinum group element-containing catalyst layer, the platinum group element-containing catalyst layer is disposed only on a side of an inner surface of the partition walls surrounding the inflow cells, and the platinum group element-containing catalyst layer is disposed in a range of at least up to 40% with respect to an overall length of the cells starting from the outflow end face and is not disposed in a range of at least up to 30% with respect to the overall length of the cells starting from the inflow end face, in an extending direction of the cells of the honeycomb structure.

公开(公告)号：US20170274311A1

公开(公告)日：2017-09-28

申请号：US15455330

申请日：2017-03-10

Applicant: NGK INSULATORS, LTD.

Inventor： Fumihiko YOSHIOKA ,  Kazuto MIURA

IPC: B01D46/24

CPC classification number: B01D46/2459 ,  B01D46/247 ,  B01D2046/2481 ,  B01D2046/2492 ,  B01D2279/30

Abstract: A honeycomb filter includes a pillar-shaped honeycomb substrate including a porous partition wall that defines a plurality of cells extending from an inflow end face to an outflow end face, an inflow side plugging portion disposed at the inflow end face of the honeycomb substrate to plug open ends of outflow cells; and an outflow side plugging portion disposed at the outflow end face of the honeycomb substrate to plug open ends of inflow cells other than the outflow cells. The honeycomb substrate includes the partition wall that defines two of the inflow cells by division. An average of the plugging length LOUT of the outflow side plugging portions disposed in the inflow cells of the honeycomb substrate is larger than an average of the plugging length LIN of the inflow side plugging portions disposed in the outflow cells of the honeycomb substrate.