Electromagnetic valve
AssigneeRobert Bosch GmbH
InventorWerner Brehm
Life of this patent
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Abstract
The electromagnetic valve includes a magnetic housing (11, 12, 13), an electromagnetic coil (15) received in the magnetic housing and a plurality of movable parts including a movable magnetic armature (23,36) and a movable valve stem device (58) for valve opening and closing. To provide a damping of the motion of the movable parts, at least one of the movable parts (23, 36, 58), advantageously a part of the armature, is provided with a hollow compartment (72) and a damping mass (74) at least partial filling the hollow compartment (72). The volume of the hollow compartment (72) is greater than the volume of the damping mass (74) so that motions of the magnetic armature and other parts are damped by the frictional and impact losses occurring in the damping mass (74).
Claims10
Electromagnetic valve comprising a magnetic housing (11, 12, 13), an electromagnetic coil (15) received in the magnetic housing and a plurality of movable parts (23,36) comprising a movable magnetic armature and a movable valve stem means (58) for valve opening and closing, wherein at least one of the movable parts (23, 36, 58) is provided with a hollow compartment (72) having a volume and a damping mass (74) having a volume, said damping mass (74) at least partially fills the hollow compartment (72) and the volume of the hollow compartment (72) is greater than the volume of the damping mass (74) so that frictional and impact losses occur in the damping mass (74) during motion of the movable parts.
Dependencies are inferred from the claim text.