Drive device for electromagnetic fuel injection valve
US8960157B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2012 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Apr 15, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2041/2037
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The drive device is configured to, during a time interval between an earlier fuel injection (first fuel injection) and a later fuel injection (second fuel injection), supply an electromagnetic coil with an intermediate current at a voltage with a level of not opening the valve. Further, the drive device sets a voltage application for supplying the intermediate current to initiate before a valve closing in the earlier fuel injection and terminate before half a period of time between a first instant when the valve is closed in the earlier fuel injection and a second instant when a supply of a drive current for opening the valve is initiated in the later fuel injection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.