| 摘要 |
PURPOSE: A brake booster with an electromagnetic actuating actuating unit is provided to optimize a magnetic flux and reduce the number of parts. CONSTITUTION: A brake booster with an electromagnetic actuating unit comprises: a housing (12) to be divided, by means of at least one movable wall (14), into a vacuum chamber (18) and a working chamber (16); a control valve arrangement (20) to be associated to a brake booster (10), to connect the working chamber to atmospheric pressure or to a vacuum and to comprise a control valve housing (21) which is connected to the movable wall for joint relative movement with respect to the housing; an electromagnetic actuation unit (26) to be received in the control valve housing, to have a solenoid coil (44), a magnet armature (28) operating against the spring bias and to be rigidly coupled to a first valve seat (32) of the control valve arrangement, and an armature counter-element (46).
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