Synergistic SCR/DOC configurations for lowering diesel emissions
US9528413B2 · kind B2 · utility
7Cited by
3References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2010 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | Dec 7, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A motor-vehicle engine system comprises a first DOC configured to receive exhaust from an engine and an SCR device coupled downstream of the first DOC in a flow direction of the exhaust. The system further comprises a second DOC coupled downstream of the SCR device. The system takes advantage of hydrocarbon sorption in the SCR catalyst that is a function of temperature to enable reduced hydrocarbon emissions via oxidation at the second DOC.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.