Methods and systems for an exhaust gas treatment arrangement
US10746115B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Feb 5, 2019 |
| Grant date | Aug 18, 2020 |
| Priority date | — |
| Expiry date | Feb 8, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Methods and systems are provided for an exhaust aftertreatment arrangement. In one example, a system includes a LNT upstream of an SCR with an oxygen storage component arranged therebetween, and where a rich operation of an engine is limited based on an oxygen load of the oxygen storage component when an exhaust gas temperature is higher than a limit temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.