Methods and systems for an exhaust gas treatment system
US9003777B2 · kind B2 · utility
0Cited by
0References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2013 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | Jul 15, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Various systems and methods are described for an engine system with an exhaust gas treatment system including a particulate filter. In one example method, accumulated hydrocarbons are removed from the exhaust gas treatment system by increasing an exhaust gas temperature to a first temperature responsive to a particulate filter regeneration request during extended cold idle operation. After a predetermined duration, the exhaust gas temperature is increased to a second, higher temperature to regenerate the particulate filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.