Fuel injector
US6502555B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2000 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Sep 16, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M63/0064
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injector for use in an injector arrangement includes a fuel pump having a pump chamber and a spill valve controlling communication between pump chamber and a low pressure reservoir. The injector includes a valve needle which is engageable with a valve needle seating, a control chamber arranged such that the fuel pressure therein urges the valve needle towards the valve needle seating. A control valve is provided for controlling the fuel pressure within the control chamber. An actuator arrangement is arranged to control the operation of the control valve such that, when the actuator arrangement is de-energised, the control valve permits communication between the control chamber and the low pressure reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.