Stripping ethanol from ethanol-blended fuels for use in NOx SCR
US7257945B2 · kind B2 · utility
16Cited by
23References
3Claims
0Family size
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Key dates
| Filing date | Feb 10, 2003 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Jun 27, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D19/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method to use diesel fuel alchohol micro emulsions (E-diesel) to provide a source of reductant to lower NOx emissions using selective catalytic reduction. Ethanol is stripped from the micro emulsion and entered into the exhaust gasses upstream of the reducing catalyst. The method allows diesel (and other lean-burn) engines to meet new, lower emission standards without having to carry separate fuel and reductant tanks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.