Method and apparatus for monitoring fluid reductant for internal combustion engine exhaust
US10145285B2 · kind B2 · utility
11Cited by
0References
20Claims
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Key dates
| Filing date | Jun 26, 2014 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Aug 21, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method and means of determining the quality of a fluid reductant used in selective catalytic reduction to reduce NOx emissions from an internal combustion engine. Short and long term average of NOx conversion efficiency are compared with thresholds, in order to determine if failure of selective catalytic reduction is due to incorrect reductant, or to failure of the catalyst device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.