Fuel injector
US9157400B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2010 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Mar 23, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M63/0045
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injector comprising a valve needle for controlling fuel injection through an injector outlet, a control chamber for receiving fuel and a three-way control valve that controls fuel pressure within the control chamber to control opening and closing movement of the valve needle to control fuel injection through the outlet. The three-way control valve controls communication between (a) a first passage and a second passage and (b) a third passage and the second passage, and includes a first housing provided with a guide bore for a control valve member, whereby movement of the control valve member is guided within the guide bore and a first valve seat, defined by a second housing, with which an end of the control valve member is engageable to control communication between the first and second passages. The first housing is a control valve housing and the second housing is an injector housing, the injector housing being provided with a guide bore for the valve needle or a part carried by the valve needle. The control valve also defines a second valve seat defined by the first housing with which the control valve member is engageable to control communication between the second and t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.