Title:
ハニカム構造体
Document Type and Number:
Japanese Patent JP7154931
Kind Code:
B2
Abstract:
The purpose of the present invention is to provide a honeycomb structure which is less susceptible to damage. This honeycomb structure comprises a plurality of cells that form a flowpath for exhaust gas, and porous cell walls that define the plurality of cells, the honeycomb structure being characterized in that the plurality of cells include a plurality of exhaust gas introduction cells into which exhaust gas is introduced, and a plurality of exhaust gas discharge cells through which exhaust gas is discharged, the exhaust gas introduction cells having exhaust gas introduction cell openings on the exhaust gas inlet-side end surface and exhaust gas introduction cell sealing portions on the exhaust gas outlet-side end surface and the exhaust gas discharge cells having exhaust gas discharge cell sealing portions on the exhaust gas inlet-side end surface, and exhaust gas discharge cell openings on the exhaust gas outlet-side end surface, the honeycomb structure having, in a cross section perpendicular to the longitudinal direction of the honeycomb structure, an inner region in which the shape of the exhaust gas introduction cells and the shape of the exhaust gas discharge cells is constant, and an end region in which the exhaust gas introduction cells become smaller and the exhaust gas discharge cells become larger approaching the exhaust gas outlet-side end surface, the exhaust gas introduction cell sealing portions are cell walls which form the outline of the exhaust gas discharge cell openings, and at the exhaust gas outlet-side end surface, and if the thickness of the central part of the cell wall which forms the outline of one exhaust gas discharge cell opening is defined as thickness α, the standard deviation of a plurality of thicknesses at the plurality of exhaust gas discharge cell openings is at least 0.01.
Inventors:
Takahiro Ito
Application Number:
JP2018193595A
Publication Date:
October 18, 2022
Filing Date:
October 12, 2018
Export Citation:
Assignee:
IBIDEN CO.,LTD.
International Classes:
C04B38/00; B01D39/20; C04B35/195; C04B35/478; F01N3/022
Domestic Patent References:
| JP2016182536A | ||||
| JP2010271031A | ||||
| JP2016061266A | ||||
| JP2003251198A | ||||
| JP2002326035A | ||||
| JP2018103122A | ||||
| JP2009154148A | ||||
| JP9253504A |
Foreign References:
| WO2016098835A1 |
Attorney, Agent or Firm:
Patent Attorney Firm WisePlus