Modulator und Servolenkungskreis mit einem solchen Modulator.

摘要

The invention relates to a provided modulator, controlled by a solenoid valve in order to derive a flow of fluid under high pressure for the fluid supply circuit of a hydraulic motor. It also relates to an assisted steering circuit for a motor vehicle where the assistance is a function of the speed of the vehicle, this circuit employing such a modulator. …According to the invention, the solenoid valve is a progressive action solenoid valve whose flap (70) is able to more or less block a connection between the fluid intake (56) and the intake chamber (108) of the regulator, as a function of the signal applied to the solenoid valve; moreover the spring (116) bears on a piston (132) which closes off the regulation chamber (117) and behind which is let in a reaction chamber (128) connecting with the fluid intake (56). ……