Patent ID: 6910644

Claim:
A solenoid-operated fuel injection valve comprising: a container into which fuel is introduced; a needle member that is disposed in the container and that moves longitudinally; and an electromagnetic controller that changes an area of a fuel flow passage defined as a space between an inner surface of the container and an outer surface of the needle member by moving the needle member through suction forces, the electromagnetic controller being provided with first and second magnetic circuits through which the suction forces can be controlled independently of each others, wherein the first magnetic circuit has a pair of magnetic bodies that are opposed and attracted to each other across a first gap, the second magnetic circuit has a pair of magnetic bodies that are opposed and attracted to each other across a second gap, an electromagnet is constituted by one of the pairs of the magnetic bodies, and the magnetic bodies are each disposed between the container and the needle member to longitudinally move the needle member by suction forces of the magnetic bodies.