Fuel injection device
US8033269B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2009 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Apr 29, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M63/007
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
To provide a fuel injection device capable of reducing the amount of fuel discharging to the outside. The fuel injection device is provided with the nozzle body, the injection control valve, and the close assistance piston. In the nozzle body, the first fuel chamber and the nozzle valve close chamber are formed. The injection control valve advances to a first position, thereby allowing the first fuel passage to be communicated with the first fuel chamber and blocking access from the first fuel chamber to the third fuel passage, and the injection control valve retreats to a second position, thereby blocking access from the first fuel passage to the first fuel chamber and allowing the first fuel chamber to be communicated with the third fuel passage. The close assistance piston prevents fuel in the first fuel chamber from discharging to the outside of the fuel injection device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.