Patent ID: 6339738
Filing Date: 2002-01-15
Classification: B60T

Abstract:
In a controlled brake system containing at least one brake circuit, a plurality of wheel brakes, at least one low-pressure accumulator which takes up pressure fluid discharged in case of control from the wheel brakes and which is evacuated by a hydraulic pump, with a volume model being formed by sensing and evaluating of parameters determining the pressure fluid flow, with the volume model indicating by way of approximation of the pressure fluid in-flow and off-flow, a method for the adaptive control of the hydraulic pump comprising the steps of:determining a brake pressure pattern for each individual wheel at least by way of approximation, forming a volume model for each brake circuit which a proximately indicates the pressure fluid volume taken up by the respective low-pressure accumulator or the filling level of the low-pressure accumulator based on a brake pressure pattern within the wheel brakes connected to one wheel brake circuit, determining a control frequency and a time interval, respectively, between two successive brake pressure decreasing phases; and dimensioning the delivery capacity of the hydraulic pump so that the time interval for two successive brake pressure decreasing phases is adequate for completely evacuating the respective low pressure accumulator.