Exhaust-gas-purifying metal substrate and exhaust gas purification device using same
US11135577B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2018 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Sep 10, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2330/38
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention provides: an exhaust-gas-purifying metal substrate capable of achieving both low pressure loss and high purification performance; and an exhaust gas purification device using the metal substrate. The invention relates to an exhaust-gas-purifying perforated metal substrate in which a corrugated foil and a flat foil are layered and made into a cylindrical shape, wherein: the perforated metal substrate includes from 50/in2 to 800/in2 of cells; the corrugated foil includes a plurality of first holes having an area that is from 2.0 to 50 times the average opening area of the cells; the flat foil includes a plurality of second holes having an area that is from 3.0 to 100 times the average opening area of the cells; and the average value of the area of the first holes in the corrugated foil is smaller than the average value of the area of the second holes in the flat foil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.