Pressure regulating device for a hydraulic circuit.

摘要

The invention relates to a pressure regulating device for a hydraulic circuit, in particular for a motor vehicle braking circuit, comprising at least one pressurised fluid source (10) connected to a low pressure fluid reservoir (16) and in at least one sub-circuit (I, II) a second pressurised fluid source (50) and two pressure receivers (20, 22). According to the invention, a proportional solenoid valve (24, 26) is associated with each pressure receiver (20, 22) and is connected to the pressurised fluid source (10) and to the second pressurised fluid source (50), and a differential pressure-depression valve (100) closes at rest a communication between the pressurised fluid source (10) and the supply of the second pressurised fluid source (50), this communication being opened when the second pressurised fluid source is used.