| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a fuel injection valve capable of accurately controlling an injection amount. <P>SOLUTION: The fuel injection valve includes: a coil 60 which generates magnetic attraction by energization in valve-opening operation for opening an injection hole 17 while dispersing the magnetic attraction by stopping the energization in valve-closing operation for closing the injection hole 17; a valve member 40 which has a valve penetration part 42 penetrating a movable core 30 and a valve projection part 44 projecting from the valve penetration part 42 and capable of contacting the movable core 30 from a fixed core 20 side and which connects/disconnects injection of fuel by opening/closing the injection hole 17 by reciprocation; and a movable stopper 50 which has a stopper penetration part 52 penetrating the movable core 30 to project from an end surface 31a on the fixed core 20 side of the movable core 30 and which forms a gap 56a between the valve projection part 44 and the locked movable core 30 by making the stopper penetration part 52 contact the valve projection part 44 from the opposite side of the fixed core 20, in a state of stopping energization to the coil 60. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
