Patent ID: 7712686
Filing Date: 2010-05-11
Classification: F02M

Abstract:
1. A fuel injection valve comprising: a valve member for regulating a flow of a fuel being provided to a nozzle hole; a movable core being axially slidable with the valve member; a fixed core being faced by an end of the movable core, the end being on an opposite side of the movable core relative to the valve member; a coil portion having an increasing number of winding of a winding wire toward the movable core in a bobbin for generating a magnetic field that yields a magnetic attractive force between the movable core and the fixed core upon reception of an electric current; and a cylindrical reception pipe for housing the movable core and the fixed core therewithin, wherein an inner diameter of the coil portion is constant along a longitudinal axis of the coil portion, and wherein the fixed core axially faces the end of the movable core at a location between both axial ends of the coil portion.