A method for conveying a metered hydraulic volume in a vehicle brake system by means of an electrically driven motor pump aggregate and vehicle brake system

摘要

The invention relates to a method for conveying a metered hydraulic volume in a vehicle brake system by means of an electrically driven motor / pump unit, in which a mechanical pump of the motor / pump unit by means of an electric motor of the motor / pump unit is driven, wherein the electric motor with a rising motor voltage ramp is acted upon, whereby a motor current (12) is detected, wherein a conveying operation of the motor / pump unit is used, as soon as a result of the motor current (12) a sum of the drag torque generated engine torque, breakaway torque and moment of friction of the motor / pump unit, and wherein the motor current (12) is reduced in the case of the use of the conveyance operation. The method is characterized in that a motor voltage (11) in the case of detecting a reduction of the motor current (12) after the elapse of a predetermined time interval is reduced to a value which the conveying operation is terminated, the present invention also relates to a vehicle brake system.