Particulate filter regeneration during engine shutdown
US8181452B2 · kind B2 · utility
20Cited by
1References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2009 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Dec 17, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Various systems and method are described for controlling an engine having an exhaust system which includes a particulate filter. One example method comprises, after shutting down the engine and spinning down the engine to rest, operating a vacuum pump to draw fresh air through the exhaust system to an intake system, and regenerating at least a portion of the particulate filter during the engine rest.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.