公开(公告)号：US20230311110A1

公开(公告)日：2023-10-05

申请号：US18166028

申请日：2023-02-08

Applicant: NGK Insulators, Ltd.

Inventor： Taro OSADA

IPC: B01J35/04 ,  B01J27/224 ,  B01J35/00 ,  B01D53/94 ,  F01N3/28 ,  F01N3/20

CPC classification number: B01J35/04 ,  B01J27/224 ,  B01J35/0033 ,  B01D53/94 ,  F01N3/2803 ,  F01N3/2026 ,  B01D2255/9155 ,  B01D2258/01 ,  B01D2259/4566 ,  F01N2330/30

Abstract: A honeycomb structure including a honeycomb structure portion made of ceramics having an outer peripheral wall and partition walls disposed inside the outer peripheral wall and partitioning a plurality of cells; and a pair of electrode layers provided on an outer surface of the outer peripheral wall; wherein in a cross-section orthogonal to a direction in which the cells extend, assuming a coordinate value of a center of gravity O is 0, and a coordinate value of an inner peripheral surface of the outer peripheral wall is 1.00 R, an average value P1A of a porosity (%) of the partition walls in a range of coordinate values of 0 to 0.50 R and an average value P2A of a porosity (%) of the partition walls in a range of coordinate values of 0.50 R to 1.00 R satisfy a relationship of 1

公开(公告)号：US20230278022A1

公开(公告)日：2023-09-07

申请号：US18171745

申请日：2023-02-21

Applicant: NGK Insulators, Ltd. ,  Toyota Jidosha Kabushiki Kaisha

Inventor： Taro OSADA ,  Yukiharu MORITA ,  Takayuki INOUE ,  Yuko KOZAKI ,  Yuto NAITO ,  Takahiro SADAMITSU

IPC: B01J35/04 ,  B01J35/00 ,  B01J35/10 ,  B01J27/224 ,  B01D53/94 ,  F01N3/20 ,  F01N3/28

CPC classification number: B01J35/04 ,  B01D53/94 ,  B01J27/224 ,  B01J35/0033 ,  B01J35/109 ,  F01N3/2026 ,  F01N3/2828 ,  F01N3/2842 ,  B01D2255/9155 ,  F01N2330/30 ,  F01N2370/04

Abstract: A honeycomb structure 20 according to the present invention includes: a ceramic honeycomb structure portion 10 including: an outer peripheral wall 12; a partition wall 13, the partition wall 13 defining a plurality of cells 16; and a pair of electrode layers 14a, 14b each arranged so as to extend in a form of a band on an outer surface of the outer peripheral wall 12, across a central axis of the honeycomb structure portion 10, wherein the honeycomb structure portion 10 is provided in an end portion region(s) extending in a direction from the one end face and/or the other end face to a center in a flow path length direction of the honeycomb structure portion 10, and the honeycomb structure portion 10 comprises at least one low porosity portion 4 having a lower porosity than an average porosity of the whole honeycomb structure portion 10.