| 摘要 |
The device for controlling pressure (20) situated in a branch hydraulic line, comprises a distributor slide (23) which slides in a bore (22) into which an inlet passage (27) and an outlet passage (28) open, the slide forming with the outlet passage a restriction which can be modulated selectively, the slide having an internal passage (32, 30, 29) which is provided with a restriction (30) which establishes permanent communication between the inlet passage (27) and a pilot chamber (24), a passage (36, 37) communicates with the outlet passage (28) which opens into the pilot chamber (24) through a valve seat (35) which may be closed selectively by a valve member (38) which is controlled, as a function of electrical control signals, by an electromagnetic control component comprising typically a main coil (42) and a secondary coil (45) mounted on a non-magnetic support (39) which is firmly fixed to the valve member (38).
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