Methods and systems for exhaust emission control
US10954835B2 · kind B2 · utility
1Cited by
5References
7Claims
0Family size
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Key dates
| Filing date | Mar 12, 2019 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Apr 23, 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 a low temperature NOx adsorber (LTNA). In one example, a method includes initiating a desulfation of an LTNA responsive to an estimated sulfur exposure exceeding a threshold, the desulfation including heating the LTNA to a first threshold temperature while maintaining an exhaust oxygen level above a threshold level throughout the entire desulfation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.