ELECTROMAGNETIC VALVE AND HIGH PRESSURE PUMP USING THE SAME

摘要

An electromagnetic body has a movable core reciprocatably movable within a movable core chamber. The movable core has through holes and a fitting hole that pass through the movable core in a direction of movement of the movable core. A stator core facing the movable core defines the movable core chamber together with the electromagnetic body. A valve stem is fixed into the fitting hole and has a fluid chamber recessed from a first end surface facing the stator core. Air bubbles generated in a gap can be guided into the fluid chamber and collapse by flow of the fuel flowing into the fluid chamber from the through holes through the gap.

主权项

1. An electromagnetic valve comprising:
an electromagnetic body having a movable core chamber; a movable core reciprocatably movable within the movable core chamber and having a through hole and a fitting hole that pass through the movable core in a direction of movement of the movable core; a stator core facing the movable core and defining the movable core chamber together with the electromagnetic body; a biasing member biasing the movable core in a direction away from the stator core; a coil generating magnetic attraction between the stator core and the movable core when being energized; and a valve stem fixed into the fitting hole, wherein the valve stem has an end surface facing the stator core and a fluid chamber recessed from the end surface of the valve stem.