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    • 1. 发明专利
    • AT522414T
    • 2011-09-15
    • AT08842914
    • 2008-10-23
    • CONTINENTAL TEVES AG & CO OHG
    • MARON CHRISTOFSCHUMANN MARCUSATTALLAH FAOUZISCHNEIDER HEINZ-ANTON
    • B60T13/74B60T17/22
    • A parking brake having an actuator, wherein the actuator is driven by a direct current motor which can be operated in two directions. The actuator moves, via a self-locking gear mechanism of the actuator, at least one brake shoe for applying or releasing the parking brake in the direction of a rotary element or away therefrom. A control unit for performing open-loop or closed-loop control of the movement of the direct current motor is also provided. The parking brake is designed such that, when the parking brake is applied or released, an application point of the brake shoes against the rotary element is generally overshot. In order to increase the accuracy and reliability of the setting of the brake-application force when the parking brake is applied or of the brake-application clearance when the parking brake is released, the control unit determines the application point by forming the first derivative over time of the electric current taken up by the direct current motor during the application of the brake. A corresponding method for operating such a parking brake is also described.
    • 2. 发明专利
    • DE102007050662A1
    • 2009-04-30
    • DE102007050662
    • 2007-10-24
    • CONTINENTAL TEVES AG & CO OHG
    • ROBERT TOMATTALLAH FAOUZISCHELLER TOBIAS
    • B60T17/22G01L5/28
    • A method for the calibration or diagnosis of a motor vehicle brake system having a cyclically operated pump. At least one parameter (URPOff), representing the electromotor force of the reference pump, is repeatedly ascertained during operation of a reference pump under defined guidelines. A statistical characteristic variable (URPOff) is derived from the values of parameter (URPOff) ascertained for the reference pump. Parameter (UBPOff) is ascertained under a corresponding guideline during operation of an operating pump. Corresponding statistical characteristic variable (UBPOff) is derived from the values of parameter (UBPOff) ascertained for the operating pump. At least one ratio number is calculated as a measure of the deviation of the operating behavior of the operating pump from the operating behavior of the reference pump from the characteristic variable (URPOff) calculated for the reference pump and the characteristic variable (UBPOff) calculated for the operating pump.
    • 7. 发明专利
    • AT522413T
    • 2011-09-15
    • AT08842647
    • 2008-10-23
    • CONTINENTAL TEVES AG & CO OHG
    • SCHUMANN MARCUSATTALLAH FAOUZIMARON CHRISTOFSCHNEIDER HEINZ-ANTON
    • B60T13/58B60T13/74B60T17/22
    • A parking brake having an actuator, wherein the actuator is driven by a direct current motor which can be operated in two directions. The actuator moves, via a self-locking gear mechanism of the actuator, at least one brake shoe for applying or releasing the parking brake in the direction of a rotary element or away therefrom. A control unit for performing open-loop or closed-loop control of the movement of the direct current motor is also provided. The parking brake is designed such that, when the parking brake is applied or released, an application point of the brake shoes against the rotary element is generally overshot. In order to increase the accuracy and reliability of the setting of the brake-application force when the parking brake is applied or of the brake-application clearance when the parking brake is released, the control unit determines the application point by forming the first derivative over time of the electric current taken up by the direct current motor during the application of the brake. A corresponding method for operating such a parking brake is also described.