In a solenoid valve for a hydraulic braking system, a mechanical locking device is formed between a guide assembly and a valve armature or tappet. The mechanical locking device releases the valve armature or the tappet in a currentless closed position such that the restoring spring drives the valve armature and presses the closing element into the valve seat to seal and fastens the valve armature or the tappet in a currentless open position against the force of the restoring spring in an axial locking position such that the closing element lifts from the valve seat. The valve armature includes a main-stage armature having a first surface to which pressure is applied and a preliminary-stage armature having a smaller, second surface to which pressure is applied. The preliminary-stage armature is mounted axially movably in the main-stage armature and interacts with a preliminary-stage seat by means of a preliminary-stage closing element.
Solenoid valve and hydraulic braking system for a vehicle
23.03.2021
Patent
Elektronische Ressource
Englisch
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