Method of controlling operation of an engine having both an exhaust fluid recirculation apparatus and an exhaust fluid treatment apparatus
US9488089B2 · kind B2 · utility
0Cited by
8References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 24, 2013 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | Jul 24, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In an engine unit including a combustion unit and an exhaust fluid recirculation apparatus where unburnt fuel is provided to an exhaust flow treatment apparatus for combustion, it may be desirable to prevent unburnt fuel from entering the exhaust fluid recirculation apparatus. A method of controlling operation of an engine unit includes confirming that a valve of the exhaust flow recirculation apparatus is closed, and overriding a control signal for controlling the valve in order to ensure that the valve remains closed before injecting fuel upstream of the valve for combustion in the exhaust fluid treatment apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.