RU98116788A - MAGNET VALVE - Google Patents

Claims (6)

1. A magnetic valve (30) for controlling a valve nozzle of a fuel injection system comprising a valve needle, the opening and closing control of which is controlled by this magnetic valve containing an electromagnet (29), an armature (28) and moved with the help of said armature and loaded in the closing direction the valve spring (31), the valve element (25) interacting with the valve seat (24), the anchor being made detachable from two parts and consists of the first anchor part (28), which is mounted on the second anchor part (27) with the possibility of moving relative to it in the closing direction of the valve element (25) under the action of its own inertial mass against the force of the return spring (35), characterized in that on the first anchor part there is a part of a hydraulic damping device that damps the residual vibrations of the first anchor part (28) when its dynamic movement.  2. A solenoid valve according to claim 1, characterized in that the first anchor part is slidably mounted along the second anchor part made in the form of an anchor rod (27), and the other part of the damping device is formed by a fixedly installed part of the magnetic valve.  3. A solenoid valve according to claim 2, characterized in that the fixedly mounted part of the solenoid valve is a sliding sleeve (34) serving as a guide for the anchor rod (27).  4. A solenoid valve according to claim 3, characterized in that the first anchor part (28 ') has an axially facing protrusion (51), which, when the first anchor part is moved, can enter this protrusion and the stationary recess ( 52) in the sleeve (34) of the slide, while the recess (52) together with the protrusion (51) limit the damping cavity (50), which through the bypass gap serving to the fuel communicates with the surrounding discharge cavity (19).  5. A solenoid valve according to claim 2, characterized in that the fixed part is an anchor rod held by pressing the valve element (25) against the valve seat (24).  6. A solenoid valve according to claim 5, characterized in that an annular ledge (45) is provided on the anchor rod (27 ') surrounded by a part of the anchor part (28'), and an annular ledge is also made on the first anchor part (28 ') ( 49), between which and an annular ledge (45) of the anchor rod (27 '), a damping cavity (50') is constantly enclosed, communicating through the bypass gap serving to drain the fuel with the surrounding discharge cavity (19).