Fuel injector including valve needle, injection control valve, and drain valve
US6267306A · kind A · utility
25Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1999 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | Sep 14, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M63/0017
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injector comprising a valve needle which is slidable within a bore, a surface associated with the valve needle defining, in part, a control chamber which communicates, through a restriction, with a supply passage. The fuel injector also includes an injection control valve controlling communication between the control chamber and a low pressure reservoir, and a drain valve controlling communication between the supply passage and the low pressure reservoir. The injection control valve and the drain valve include respective armatures moveable under the influence of a common electromagnetic actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.