Method for operating a fuel injection system
US9599060B2 · kind B2 · utility
2Cited by
10References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2015 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Sep 7, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2250/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of operating an engine with dual fuel injection capabilities to enable fuel rail over-pressure control is shown. The method comprises operating an engine cylinder with only port injection, while selectively activating and deactivating a direct injector in response to an estimated minimum fuel injection mass from the direct injector. Direct fuel injection is actuated until the minimum fuel mass injected by the direct injector has reached a lower threshold that is above an NVH limit of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.