Injector arrangement
US10458379B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2014 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Aug 4, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M51/0667
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injector includes an injector body with a bore; an injector needle located within the bore and engageable with a needle seat to control fuel injection through an injector outlet; an armature member, the armature member being engageable with an armature seat on the injector needle, the injector needle in part and the armature member in part defining a control chamber; an actuator arrangement arranged to control fuel pressure within the control chamber such that fuel pressure variations within the control chamber controls movement of the injector needle relative to the needle seat wherein the actuator arrangement is arranged to be capable of moving the armature member from a seated position in which it engages the armature seat to an unseated position in which the armature member has moved relative to the armature seat in order to bring the control chamber into fluid communication with a low pressure drain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.