Exhaust gas treatment system and method having improved low temperature performance
US10767532B2 · kind B2 · utility
0Cited by
8References
19Claims
0Family size
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Key dates
| Filing date | Jun 13, 2018 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Jul 20, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method of treating exhaust gas from an internal combustion engine includes sensing a temperature of the exhaust gas with a temperature sensor, comparing the sensed temperature with a threshold temperature, injecting a first reductant into the exhaust gas at a first location if the sensed temperature is less than the threshold temperature, and injecting a second reductant having a different composition than the first reductant into the exhaust gas at a second location if the sensed temperature is greater than the threshold temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.