Common rail fuel injector for internal combustion engines, as well as a fuel system and an internal combustion engine incorporating the injector
US6684857B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 15, 2002 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Jul 10, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/28
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection device for an internal combustion engines includes a housing with an injection end. A recess extends inside the housing contains an axially movable valve element, which cooperates with a valve seat and has a pressure surface oriented away from the injection end, which pressure surface axially delimits a control chamber. A device is provided which acts on the valve element counter to the force resultant of the pressure surface. A control valve is connected to the control chamber via a flow throttle. The control valve has at least three connections and at least two switching positions and is connected to a high-pressure fluid inlet and a low-pressure fluid outlet on the one side and be connected to the flow throttle on the other side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.