Control valve for a fuel injection nozzle
AssigneeRobert Bosch GmbH
InventorHermann Koch-Groeber
Life of this patent
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Abstract
A control valve for a fuel injection nozzle, having a control chamber, into which a fluid conduit discharges, and a valve element, which rests on a valve seat in the control chamber, so that the fluid conduit is closed. An armature plate, which is disposed in a damping chamber and has a pressure piece that cooperates with the valve element, and an armature coil. The armature, formed by the pressure piece and the armature plate is prevented from bouncing in response to a closing motion. For that purpose, an overflow conduit is provided between the control chamber and the damping chamber.
Claims22
A control valve for a fuel injection nozzle, comprising a control chamber (12), into which a fluid conduit (14) discharges, a valve element (18), which rests on a valve seat (16) in the control chamber, so that the fluid conduit is closed, an armature plate (22), which is disposed in a damping chamber (24), said armature plate (22) is integral with a pressure piece (20) that cooperates with the valve element, and having an armature coil (28) which acts upon said armature plate when excited, and between the control chamber (12) and the damping chamber, an overflow conduit (30;
- 32, 34) is provided.
Dependencies are inferred from the claim text.