Particulate filter regeneration during engine shutdown
US8424295B2 · kind B2 · utility
12Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2009 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Sep 7, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Systems and methods for controlling regeneration of a particulate filter downstream of an engine in a vehicle are provided herein. One exemplary method includes, during first engine shutdown conditions, increasing excess oxygen to the particulate filter, and regenerating the particulate filter at least during a portion of engine shutdown. The method further includes during second engine shutdown conditions, decreasing the excess oxygen to the particulate filter at least during a portion of engine shutdown.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.