Methods and system for controlling selective catalytic reductant catalyst of a gasoline engine
US11603787B2 · kind B2 · utility
1Cited by
4References
12Claims
0Family size
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Key dates
| Filing date | Nov 30, 2020 |
| Grant date | Mar 14, 2023 |
| Priority date | — |
| Expiry date | Nov 30, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Systems and methods for controlling a gasoline urea selective catalytic reductant catalyst are described. In one example, an observer is provided that corrects an estimate of an amount of NH3 that is stored in a SCR. The amount of NH3 that is stored in the SCR is a basis for generating additional NH3 or ceasing generation of NH3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.