Patent ID: 8918262
Filing Date: 2014-12-23
Classification: B60T

Abstract:
1. A pressure control device of a vehicle, comprising: a pressure control arrangement of a fluid pressure brake system of the vehicle for providing at least brake slip-dependent control of brake pressures in brake cylinders of each individual wheel of an axle; wherein the pressure control arrangement includes a single relay valve having a supply port that is supplied by a supply pressure, a venting port connected to a pressure sink, a control port and at least two working ports, and wherein one of the working ports is assigned to at least one brake cylinder of a wheel on one vehicle side of the axle and the other of the working ports of the relay valve is assigned to at least one brake cylinder of a wheel on the other vehicle side of the axle, wherein each of the working ports of the relay valve is connected to a 2/2-way valve, which is controlled directly or indirectly by a control unit and assigned to a respective vehicle side and which either establishes a connection between the relevant working port of the relay valve and the assigned brake cylinder or blocks the connection, depending on actuation by the control unit, and wherein the control port of the relay valve is connectable to a brake control pressure formed in accordance with the driver's braking input, to a supply pressure of a pressure reservoir or to a pressure sink by a valve system formed by one 3/2-way solenoid valve or by two 2/2-way solenoid valves and controlled by the control unit.