Patent classifications
F02M51/0646
INJECTOR
An electromagnetically driven injector may include an electromagnetic coil, a movable core, a doughnut-shaped fixed core, a valve, a coil spring, and at least one plate spring. When the electromagnetic coil is not energized, a valve closed state may be maintained by a valve element of the valve normally biased in a valve closed direction by cooperation of the coil spring and the at least one plate spring. When the electromagnetic coil is energized, the valve may be opened by the movable core being attracted to the doughnut-shaped fixed core, the valve element attached to the movable core disposed so as to be attracted to the fixed core disposed on a center of the electromagnetic coil being disposed along a stroke direction in the coil spring, the at least one plate spring being provided at a right angle to the stroke direction of the valve element, a central portion of the at least one plate spring being fixed at a fixation position while sandwiched between the valve element and the movable core, both of the valve element and the movable core being in contact with the fixation position, a peripheral edge portion of the at least one plate spring being fixed while sandwiched on a nozzle side. The fixation position of the movable core and the valve element that sandwich the central portion of the at least one plate spring may be assembled by laser welding.