Patent ID: 6682046
Filing Date: 2004-01-27
Classification: F02M,F16K

Abstract:
A fuel injection valve comprising:a cylindrical pipe; a fixed connector inserted into and fixed to the pipe, the fixed connector having a fixed action surface at one end side and being made of a magnetic material; a movable core inserted into the pipe so as to slide in contact with an inner circumferential surface of the pipe, the movable core having a movable action surface facing the fixed action surface at one end and being made of a magnetic material; a solenoid coil energized by a power supply source, for generating magnetic flux transmitted from the fixed action surface to the movable action surface, and for generating an attracting force between the fixed connector and the movable core; and a valve body being movable together with the movable core, for opening and closing a fuel injection hole by energizing and de-energizing the solenoid coil, wherein an outer diameter of the fixed action surface is smaller than an outer diameter of the movable action surface.