Honeycomb structure
US7572497B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2007 |
| Grant date | Aug 11, 2009 |
| Priority date | — |
| Expiry date | Mar 26, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24174
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There is disclosed a honeycomb structure which solves a problem of antinomy that it is difficult to satisfy both of a high temperature rise performance and a high thermal capacity at the same time and which is disposed at a previous stage of a filter for trapping particulate matters (PM) discharged from a diesel engine so that regeneration of the PM trapped by the filter can smoothly be completed and an exhaust gas can efficiently be purified. In a honeycomb structure in which a plurality of cells arranged in parallel with one another to communicate between two end surfaces of the honeycomb structure are formed by a plurality of partition walls, the plurality of partition walls are made of a ceramic, each cell is formed into a substantially square shape, an intersection between the partition walls is formed into an R-shape or a C-shape, a value (L/T) of a ratio of a diagonal distance L between the intersections to an average thickness T of the partition walls is set to 1.6 or more, and an open area ratio of the cells is set to 55% or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.