Patents by Inventor Fabian Querbach

Fabian Querbach has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240083404
    Abstract: In a method for operating a force-sensor-less electromechanical service brake of a vehicle, a current profile of a force-displacement characteristic is determined and stored during a closing of a parking brake when the vehicle is being parked. The current profile of the force-displacement characteristic is used during a subsequent trip to set a required braking force on the electromechanical service brake.
    Type: Application
    Filed: September 12, 2023
    Publication date: March 14, 2024
    Inventors: Andreas Marx, Fabian Querbach
  • Publication number: 20240083403
    Abstract: In a method for operating a force-sensor-less electromechanical service brake in a brake system of a vehicle, a current value of a braking contact point and a current profile of a force-displacement characteristic of the electromechanical service brake are determined as a function of the total rotation angle of a shaft of an electric motor of the electromechanical service brake. These values are determined in regular driving operation of the vehicle. In the case of a braking request, the electric motor is activated in accordance with the current value of the braking contact point and the current profile of the force-displacement characteristic in order to satisfy the braking request. The electric motor has a detection element, which detects the total rotation angle of the shaft and a rotation rate of the electric motor.
    Type: Application
    Filed: September 8, 2023
    Publication date: March 14, 2024
    Inventors: Andreas Marx, Fabian Querbach
  • Publication number: 20240083406
    Abstract: A brake system of a vehicle, with electromechanical service brakes on at least one axle designed without force sensors, having a control unit designed to control a braking operation for meeting a braking demand by activating the electromechanical service brakes of all the axles. An acquisition element on each of the electromechanical service brakes acquires a parameter from which a current brake touch point of the electromechanical service brake in question can be determined. For operating the brake system, the brakes on one of the axles of the vehicle are actuated during a braking operation. A current value of a brake touch point of the electromechanical service brakes on another axle that is currently not being used to provide the brake force of the ongoing braking operation is determined. An air gap of those electromechanical service brakes is set according to the current value of the brake touch point.
    Type: Application
    Filed: September 11, 2023
    Publication date: March 14, 2024
    Inventors: Andreas Marx, Fabian Querbach
  • Publication number: 20240075916
    Abstract: The disclosure relates to a method for adapting a braking behaviour of a brake of a motor vehicle to a traffic situation, including: (i) adjusting a clearance of the brake to a value LK; (ii) determining the traffic situation; and (iii) adjusting the clearance to a value LA based on the determined traffic situation, wherein 0<LA<LK is satisfied.
    Type: Application
    Filed: August 30, 2023
    Publication date: March 7, 2024
    Inventors: Andreas Marx, Fabian Querbach
  • Publication number: 20230304550
    Abstract: An electromechanical vehicle brake has an electric motor and an actuation piston, which acts on a braking assembly, as well as a ball screw drive. The ball screw drive comprises a spindle rotatable by the electric motor and a ball screw nut displaceable on the spindle. The ball screw nut is received in the actuation piston and cooperates with a stop on an inner axial end of the actuation piston to displace the actuation piston in an actuation direction. A spring element is arranged in the actuation piston between the stop and the ball screw nut. A travel sensor measures a linear displacement of the actuation piston. With the aid of the signal of the travel sensor, which indicates a displacement position of the actuation piston, a braking force currently applied by the actuation piston to the braking assembly is determined under consideration of the characteristic curve of the spring element.
    Type: Application
    Filed: March 21, 2023
    Publication date: September 28, 2023
    Inventors: Fabian Querbach, Andreas Marx, Roman Bechmann
  • Publication number: 20230192049
    Abstract: A brake-by-wire braking system for a vehicle having at least two wheels which are able to be braked is described. The braking system comprises at least two brake actuator units, each of which can be associated with one of the wheels of the vehicle which are able to be braked. The braking system further comprises a brake actuation unit for actuation by the driver for braking, having at least one sensor for detecting an activation of the brake actuation unit by the driver, an acceleration actuation unit having at least one sensor for detecting the activation of the acceleration actuation unit by the driver, and at least one electronic control unit which is adapted to operate one or both of the brake actuator units in order to bring about a braking force at an associated wheel. The control unit is adapted to operate the brake actuator units on the basis of an activation of the acceleration activation unit in the event of a fault or failure of the brake actuation unit.
    Type: Application
    Filed: December 12, 2022
    Publication date: June 22, 2023
    Inventors: Andreas Marx, Fabian Querbach, Roman Bechmann
  • Publication number: 20220363229
    Abstract: A brake system for a vehicle is disclosed herein, which is constructed for selective pressurisation and pressure relief of at least two pressure connections for brake actuators. The brake system comprises an electrofluidic pressure generation unit, a main cylinder unit and an electrofluidic pressure increase unit, which is fluidly coupled at the input side to the electrofluidic pressure generation unit and/or the main cylinder unit in such a manner that exclusively a volume flow of pressure fluid which is pressurised by the electrofluidic pressure generation unit and/or the main cylinder unit can be acted on with a supplementary pressure by the pressure increase unit. At the output side, the pressure increase unit is connected in fluid terms to one of the pressure connections. In addition, a method for operating such a brake system is set out.
    Type: Application
    Filed: May 3, 2022
    Publication date: November 17, 2022
    Inventors: Frank Schmidt, Fabian Querbach, Frank Einig, Peter Goergen, Thomas Puetz, Frank Heller, Thomas Wald, Joachim Oster, Johanna Mengelkoch