Patents by Inventor Stephan Schaefer

Stephan Schaefer 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: 20230350385
    Abstract: A computer-implemented method and system for adjusting at least one drying process designated for producing at least one coating on at least one substrate are provided herein. The at least one drying process is applied to at least one preparation deposited on the at least one substrate, wherein the at least one drying process comprises at least two consecutive drying stages after which the at least one coating is produced Further disclosed are a related method and system for continuously producing the at least one coating on the at least one substrate.
    Type: Application
    Filed: September 29, 2021
    Publication date: November 2, 2023
    Inventors: Benjamin Schmidt-Hansberg, Clemens Thomas Chan-Braun, Marcel Schmitt, Fatih Cetinel, Felix Eberle, Uwe Wolf, Stephan Schaefer
  • Patent number: 11453378
    Abstract: A method for controlling a drive train of a hybrid vehicle which includes an internal combustion engine, an electric machine that is operated as a motor or generator, and a transmission. Energy is recovered in the overrun operation of the vehicle by operating the electric machine in generator mode. The transmission has at least one free-wheel-connected low forward gear that only transmits traction torque, and at least one free-wheel-free high forward gear. When the free-wheel-connected low forward gear is engaged and the vehicle transitions into the overrun operation, or the driver requests a transition into the overrun operation by selecting the free-wheel-connected low forward gear, an overrun torque is set via the free-wheel-free high forward gear by a generator operation of the electric machine for energy recovery. The overrun torque thereby substantially corresponds to an overrun torque of a free-wheel-free configuration of the free-wheel-connected low forward gear.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: September 27, 2022
    Assignee: Volkswagen Aktiengesellschaft
    Inventor: Stephan Schaefer
  • Publication number: 20210086746
    Abstract: A method for controlling a drive train of a hybrid vehicle which includes an internal combustion engine, an electric machine that is operated as a motor or generator, and a transmission. Energy is recovered in the overrun operation of the vehicle by operating the electric machine in generator mode. The transmission has at least one free-wheel-connected low forward gear that only transmits traction torque, and at least one free-wheel-free high forward gear. When the free-wheel-connected low forward gear is engaged and the vehicle transitions into the overrun operation, or the driver requests a transition into the overrun operation by selecting the free-wheel-connected low forward gear, an overrun torque is set via the free-wheel-free high forward gear by a generator operation of the electric machine for energy recovery. The overrun torque thereby substantially corresponds to an overrun torque of a free-wheel-free configuration of the free-wheel-connected low forward gear.
    Type: Application
    Filed: November 29, 2018
    Publication date: March 25, 2021
    Inventor: STEPHAN SCHAEFER
  • Patent number: 7678018
    Abstract: A method for implementing shifts from a source gear to a target gear of an automatic shift transmission includes storing a respective upshift threshold and a respective downshift threshold for each possible sequential gear shift. The respective upshift threshold and the respective downshift threshold are defined in dependence of an accelerator pedal position, such that a limit value that is valid for a respective upshift or downshift is stored as a vehicle speed value in a control device. The vehicle speed that changes while the motor vehicle is driving and a changing accelerator pedal position are measured. Downshifts are simplified for a driver by configuring at least two downshift thresholds to be substantially horizontally extending in a first region of a possible accelerator pedal position and at least partly step-shaped in a second region of the possible accelerator pedal position.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: March 16, 2010
    Assignee: Volkswagen AG
    Inventor: Stephan Schaefer
  • Publication number: 20070287592
    Abstract: A method for implementing shifts from a source gear to a target gear of an automatic shift transmission includes storing a respective upshift threshold and a respective downshift threshold for each possible sequential gear shift. The respective upshift threshold and the respective downshift threshold are defined in dependence of an accelerator pedal position, such that a limit value that is valid for a respective upshift or downshift is stored as a vehicle speed value in a control device. The vehicle speed that changes while the motor vehicle is driving and a changing accelerator pedal position are measured. Downshifts are simplified for a driver by configuring at least two downshift thresholds to be substantially horizontally extending in a first region of a possible accelerator pedal position and at least partly step-shaped in a second region of the possible accelerator pedal position.
    Type: Application
    Filed: May 23, 2007
    Publication date: December 13, 2007
    Applicant: Volkswagen AG
    Inventor: Stephan Schaefer