Patent ID: 6824227
Filing Date: 2004-11-30
Classification: B60T

Abstract:
Brake system with two brake circuits for a vehicle, comprising a brake servo assistance unit for automatic generation of brake force, and at least one pressure sensor for generation of a measuring signal representative of an activity on a driver's part and fed to a brake pressure control unit, with an activation control signal for actuation of the brake servo assistance unit being generated in the event measuring signals from the sensors exceed a reference value, whereintwo pressure sensors are provided and have different reference values assigned thereto, each of the pressure sensors being operatively associated with one of the brake circuits, and the activation control signal is generated for temporary activation of the brake servo assistance unit for a limited time period in the event that a higher of the reference value from the first pressure sensor is exceeded and a lower of the reference values for the second pressure sensor has not yet been exceeded, and if conditions for permanent activation are unfulfilled for the limited time period a deactivation control signal is automatically generated.