Exhaust gas purification apparatus
US10201805B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2015 |
| Grant date | Feb 12, 2019 |
| Priority date | — |
| Expiry date | Oct 6, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2510/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A exhaust gas purification apparatus is provided with; a substrate having a wall-flow structure and including entry-side cells, exit-side cells, and a porous partition; a first catalyst region formed in small diameter pores having relatively small pore diameters among internal pores in the partition; and a second catalyst region formed in large diameter pores having relatively large pore diameters among the internal pores in the partition. The first catalyst region contains a support and any one or two species of precious metal selected from Pt, Pd, and Rh loaded on the support, while the second catalyst region contains a support and any one or two species of precious metal selected from Pt, Pd, and Rh loaded on the support and other than at least the precious metal present in the first catalyst region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.