Patents by Inventor Kai Volkmar

Kai Volkmar 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).

  • Patent number: 11034339
    Abstract: A method for operating a brake system for a motor vehicle, wherein the brake system has a braking pressure source and at least one wheel brake which can be pressurized with a braking pressure which is provided by means of the braking pressure source and acting on a brake piston. For performing a diagnosis of the brake system, the wheel brake is pressurized with a braking pressure which corresponds to a diagnosis braking pressure and which applies a certain force on the brake piston, and a counterforce directed oppositely to said force is applied to the brake piston.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: June 15, 2021
    Assignee: AUDI AG
    Inventor: Kai Volkmar
  • Publication number: 20200108722
    Abstract: An operating procedure for a brake system of a motor vehicle, wherein the brake system comprises a friction brake and a regenerative brake, wherein the driving situation (F) is evaluated with regard to the use of the regenerative brake in the case of a braking, wherein, as a function of the result of the evaluation (A), a distribution function (D) is specified for the distribution of a braking torque (M) to the friction brake and to the regenerative brake.
    Type: Application
    Filed: September 12, 2019
    Publication date: April 9, 2020
    Applicant: AUDI AG
    Inventors: Kai VOLKMAR, Stephan LASSENBERGER
  • Publication number: 20200039479
    Abstract: A method for operating a brake system for a motor vehicle, wherein the brake system has a braking pressure source and at least one wheel brake which can be pressurized with a braking pressure which is provided by means of the braking pressure source and acting on a brake piston. For performing a diagnosis of the brake system, the wheel brake is pressurized with a braking pressure which corresponds to a diagnosis braking pressure and which applies a certain force on the brake piston, and a counterforce directed oppositely to said force is applied to the brake piston.
    Type: Application
    Filed: January 24, 2018
    Publication date: February 6, 2020
    Applicant: AUDI AG
    Inventor: Kai VOLKMAR
  • Patent number: 10336213
    Abstract: A method for operating an electrically operated or also electrically operable motor vehicle provided with a rechargeable electric energy storage device associated with the drive motor of the motor vehicle. A target charging state is determined for the energy storage device and an operating strategy is determined for a route that is calculated, entered or predicted for the next trip, by which recuperative deceleration is enabled with a specifiable minimum amount for deceleration processes occurring along the route.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: July 2, 2019
    Assignee: AUDI AG
    Inventors: Matthias Geuß, Kai Volkmar
  • Publication number: 20180001788
    Abstract: A method for operating an electrically operated or also electrically operable motor vehicle provided with a rechargeable electric energy storage device associated with the drive motor of the motor vehicle. A target charging state is determined for the energy storage device and an operating strategy is determined for a route that is calculated, entered or predicted for the next trip, by which recuperative deceleration is enabled with a specifiable minimum amount for deceleration processes occurring along the route. A total mass of the motor vehicle, including optionally a trailer connected to the motor vehicle, deviating from an input normal value and an air resistance of the motor vehicle deviating from a predetermined normal value are taken into account.
    Type: Application
    Filed: July 3, 2017
    Publication date: January 4, 2018
    Applicant: AUDI AG
    Inventors: Matthias GEUß, Kai VOLKMAR
  • Patent number: 6490491
    Abstract: A method for programming a controller, in particular in a motor vehicle, which is switched from the operating mode to the programming mode by a signal which is supplied externally to the controller. In a method which ensures adequate protection against unauthorized reprogramming of the controller and is nevertheless simple to handle, the external signal is used to produce switching information in a programmable read only memory, which stores at least one operating program and/or data (which is updated at predetermined intervals) for the controller and causes the changeover to the programming mode when the controller is activated.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: December 3, 2002
    Assignee: Mannesmann VDO AG
    Inventors: Stefan Hartmann, Kai Volkmar