Methods and systems for an exhaust gas aftertreatment arrangement
US10961892B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Feb 7, 2019 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Mar 23, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods and systems are provided for an exhaust aftertreatment system. In one example, a system comprises an air injector positioned to inject air between a first catalyst and a second catalyst in response to an oxygen concentration of an exhaust gas falling below a threshold concentration while exhaust gas temperatures are less than a threshold temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.