Fuel injection valve
US7712686B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 10, 2005 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Mar 1, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/505
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection valve includes a valve member for regulating a flow of a fuel to a nozzle hole, a movable core axially slidable in an integrated body with the valve member, a fixed core being faced by an end of the movable core, and a coil portion having an increasing number of winding of a winding wire toward the movable core in a bobbin to have a magnetic attractive force between the movable core and the fixed core upon application of an electric current. The number of winding wire increases toward an end on a movable core side in the coil portion. Therefore, the generated magnetic field increases on the movable core side. In this manner, the magnetic attractive force between the fixed core and the movable core is increased without increasing a cross-section and/or a body of the movable core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.