Exhaust gas treatment system for ultra low NOx and cold start
US11779906B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 27, 2020 |
| Grant date | Oct 10, 2023 |
| Priority date | — |
| Expiry date | Jun 7, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2610/1453
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present disclosure relates to an exhaust gas treatment system for treating an exhaust gas stream leaving an internal combustion engine, wherein said exhaust gas treatment system comprises (i) a first catalyst comprising a coating and a first substrate, wherein the coating comprises a vanadium oxide supported on a first oxidic support comprising titanium; (ii) a hydrocarbon injector for injecting a fluid comprising hydrocarbons into the exhaust gas stream exiting the outlet end of the first catalyst according to (i); (iii) a second catalyst comprising a coating and a second substrate, wherein the coating comprises palladium on a second oxidic support comprising one or more of zirconium, silicon, aluminum and titanium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.