Particulate control
US6877313B1 · kind B1 · utility
39Cited by
9References
46Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1999 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Nov 29, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An improved system for treating the aftertreatment of exhaust gases, especially from diesel engines, comprises a first catalyst (20) effective to oxidise hydrocarbons, a second catalyst (22) effective to convert NO to NO2, a trap (24) for particulates, on which particulates may combust with the NO2, and optionally a NOx absorption material (26).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.