Electrically operated pressure regulating device for hydraulic circuit.

摘要

The invention comprises at least one generator (22) of pressurised fluid, a hydraulic motor (20) and a reservoir (24) of fluid at low pressure, and includes a solenoid valve driven by a computer and comprising an electric coil (1) and a sliding magnetic core (3) controlling a slide valve (7) sliding in a bore provided in a body (9), the slide valve (7) delimiting two chambers (11, 15) arranged on either side of the slide valve (7) in the bore. …According to the invention, the slide valve (7) comprises a hydraulic enclosure (26) communicating with the hydraulic motor (20) and defining a reaction force which adds to the force generated by the coil (1), against a pre-stessed elastic means (131) and a return spring (132) returning the slide valve (7) and the core (3) into a rest position. ……