摘要:
A honeycomb structure includes a tubular honeycomb structure body having porous partition walls to define and form a plurality of cells and an outer peripheral wall, and a pair of electrodes disposed on a side surface of the honeycomb structure body. An electrical resistivity of the honeycomb structure body is from 1 to 200 Ωcm, each of the pair of electrodes is formed into a band-like shape extending in an extending direction of the cells of the honeycomb structure body, one electrode in the pair of electrodes is disposed on a side opposite to the other electrode in the pair of electrodes via a center of the honeycomb structure body, the honeycomb structure body has a central region and an outer peripheral region, and an electrical resistivity of the central region is lower than an electrical resistivity of the outer peripheral region.
摘要:
There is provided a honeycomb type heating device including: a pillar-shaped honeycomb substrate having a partition wall defining a plurality of cells extending from one end face to the other end face and a circumferential wall surrounding the partition wall; a plurality of heaters adjacently arranged on a circumferential face that is an outside surface of the circumferential wall in a circumferential direction of the circumferential face; and intermediate members interposed between the circumferential face of the honeycomb substrate and the plurality of heaters. The sum of areas of portions of the circumferential face covered with the intermediate members between the circumferential face of the honeycomb substrate and the plurality of heaters is 20 to 100% of the sum of areas of portions of the circumferential face covered with the plurality of heaters.
摘要:
A honeycomb structure includes a honeycomb structure body and a pair of electrode members, an electrical resistivity of the honeycomb structure body is from 1 to 200 Ωcm, each of the pair of electrode members is formed into a band-like shape extending in a cell extending direction of the honeycomb structure body, one electrode member is disposed on a side opposite to the other electrode member via a center of the honeycomb structure body, there are formed one or more electrode member slits as slits opened in an electrode member region, there are formed one or more honeycomb structure body slits as slits opened in a honeycomb structure body region, and a depth of at least one of the electrode member slits is deeper than a depth of at least one of the honeycomb structure body slits.
摘要:
A honeycomb structure includes: a honeycomb structure portion which includes an outer peripheral wall, and partition walls disposed inside the outer peripheral wall and partitioning a plurality of cells forming flow paths from one end surface to the other end surface; and a pair of electrode layers provided on an outer surface of the outer peripheral wall so as to extend in a strip shape along a direction in which the cells extend and sandwich a central axis of the honeycomb structure portion; wherein a porosity PW of the partition walls is 30% to 55%, and a ratio of the porosity PW of the partition walls to a porosity PO of the outer peripheral wall (PW/PO) satisfies 1
摘要:
A reducing agent injection device includes a honeycomb structure having a honeycomb structure body and a pair of electrode members arranged in a side surface of the honeycomb structure body and a urea spraying device spraying a urea water solution in mist form. The urea water solution sprayed from the urea spraying device is supplied inside cells from a first end face of the honeycomb structure body, and urea in the urea water solution supplied in the cells is heated and hydrolyzed inside the electrically heated honeycomb structure body to generate ammonia. The ammonia is discharged outside the honeycomb structure body from a second end face and injected outside. There is provided a reducing agent injection device that can generate and inject ammonia from a urea solution with less energy.
摘要:
A honeycomb structure includes a tubular bonded honeycomb segment assembly having a plurality of honeycomb segments and a bonding layer which bonds side surfaces of the plurality of honeycomb segments to each other; and a pair of electrode members disposed on a side surface of the bonded honeycomb segment assembly, a volume resistivity of each of the honeycomb segments is from 1 to 200 Ωcm, at least a part of the bonding layer is made of a bonding material having a conductivity, a volume resistivity of the bonding layer is from 2 to 2000 Ωcm, and each of the pair of electrode members is formed into a band-like shape extending in an extending direction of the cells of the bonded honeycomb segment assembly, and one electrode member is disposed on a side opposite to the other electrode member via a center of the bonded honeycomb segment assembly.
摘要:
A reducing agent injection device includes a honeycomb structure having a honeycomb structure body and a pair of electrode members arranged in a side surface of the honeycomb structure body and a urea spraying device spraying a urea water solution in mist form. The urea water solution sprayed from the urea spraying device is supplied inside cells from a first end face of the honeycomb structure body, and urea in the urea water solution supplied in the cells is heated and hydrolyzed inside the electrically heated honeycomb structure body to generate ammonia. The ammonia is discharged outside the honeycomb structure body from a second end face and injected outside. There is provided a reducing agent injection device that can generate and inject ammonia from a urea solution with less energy.
摘要:
A honeycomb structure includes a tubular honeycomb structure body including porous partition walls defining a plurality of cells, and an outer peripheral wall and a pair of electrode parts disposed on a side face of the honeycomb structure body, wherein the honeycomb structure body has electric resistivity of 1 to 200 Ωcm, each electrode part has a belt-like shape extending in an extending direction of the cells, each electrode part is placed on an opposite side each other across a center of the honeycomb structure body, the honeycomb structure body includes an inflow-side area that is an area on the inflow-side and covering the inflow end face, and an outflow-side area that is an area other than the inflow-side area, and the inflow-side area is made of a material having electric resistivity lower than electric resistivity of a material of the outflow-side area.
摘要:
A honeycomb structure includes a tubular honeycomb structure body having porous partition walls to define and form a plurality of cells and an outer peripheral wall, and a pair of electrodes disposed on a side surface of the honeycomb structure body. An electrical resistivity of the honeycomb structure body is from 1 to 200 Ωcm, each of the pair of electrodes is formed into a band-like shape extending in an extending direction of the cells of the honeycomb structure body, one electrode in the pair of electrodes is disposed on a side opposite to the other electrode in the pair of electrodes via a center of the honeycomb structure body, the honeycomb structure body is constituted of an outer peripheral region and a central region, and an electrical resistivity of a material constituting the outer peripheral region is lower than an electrical resistivity of a material constituting the central region.
摘要:
A honeycomb structure includes a honeycomb structure section having porous partition walls, and an outer peripheral wall; and a pair of electrode sections, each of the pair of electrode sections are formed into a band shape, the one electrode section is disposed on an opposite side to the other electrode section via a center O of the honeycomb structure section, a shape of the cells is a quadrangular shape or a hexagonal shape, and in the cross section perpendicular to the extending direction of the cells and including the electrode sections, a straight line parallel to a diagonal line connecting two facing vertexes of the one cell and passing the center of the honeycomb structure section is a reference line L, and each of the electrode sections is disposed at a position to intersect with the at least one reference line L.