EGR system with dedicated EGR cylinders
US8291891B2 · kind B2 · utility
62Cited by
31References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2008 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Jun 17, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Improved exhaust gas recirculation system and methods that use one or more of the engine's cylinders as dedicated EGR cylinders. All of the exhaust from the dedicated EGR cylinders is recirculated back to the engine intake. Thus, the EGR rate is constant, but the EGR mass flow may be controlled by adjusting the air-fuel ratio of the dedicated EGR cylinders or by using various variable valve timing techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.