Patent ID: 7931345

Claim:
A motor vehicle brake system comprising: a hydraulic line through which brake pressure can be applied by a brake cylinder to a wheel brake module by a braking medium; a low pressure accumulator that is connected to the hydraulic line for temporarily receiving excess braking medium and feeding back buffered braking medium via a feedback line; a feedback pump connected to the feedback line that is configured to be actuated cyclically for setting a delivery capacity in such a way that activation occurs within each braking cycle during a portion of pump cycles of the feedback pump corresponding to the delivery capacity; and a control unit, which is assigned to the feedback pump, that is configured to output a control value for a number of pump cycles for the feedback pump during each braking cycle on the basis of a predefined initial value, wherein the control unit is configured to output the control value taking into account a characteristic value which is derived from wheel speeds or a slip of one or more wheels of the motor vehicle, and wherein the predefined initial value adaptively accounts for: (i) a fill level of the braking medium within the low pressure accumulator, (ii) a derivative value of the fill level over time, or (iii) the fill level of the braking medium within the low pressure accumulator and the derivative value of the fill level over time.