Fuel injection valve
US8104698B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2006 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | May 31, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/07
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In relation to injectors used for internal-combustion engines, it is important to decrease valve closing delay time and also the minimum injection quantity, while these are affected by remanent magnetism in the fixed core, surface tension of the fuel, etc. With reference to a fuel injection valve with a pipe-shaped member to enclose a fixed core and a movable part and further with coils and yokes to cover up the above pipe-shaped member, the anchor to drive the movable member has a plurality of through holes for fuel passage extending in the axial direction, while these through holes are arranged at a certain intervals in the circumferential direction, and projections formed to constitute a contacting surface to touch the fixed core arranged randomly in between the through holes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.