Patent ID: 6209968
Filing Date: 2001-04-03
Classification: B60T

Abstract:
A brake system for motor vehicles with an actuating unit, comprising:a pneumatic brake force booster and a master brake cylinder located downstream of the booster,wheel brakes connected to the master cylinder, wherein the pneumatic brake force booster includes a control valve having a valve body, wherein said valve body includes a sealing seat,an electromagnet having an armature attached to the control valve for operating the sealing seat,a brake pressure controller, to which a signal corresponding to a nominal brake pressure and a signal corresponding to an actual brake pressure are supplied and whose output variable corresponds to a nominal value of an electric current to be supplied to the electromagnet, wherein the brake pressure controller is formed by connecting in parallel an electromagnetic control circuit that processes the nominal brake pressure signal into a first current value and a regulating circuit that processes a control difference between the nominal brake pressure signal and the actual pressure signal into a second current value, with the output variable of the brake pressure controller being formed by adding together the two current values.