Patents by Inventor Stefan APPEL

Stefan APPEL 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).

  • Method for operating a motor vehicle with hybrid drive, and motor vehicle with hybrid drive
    Patent number: 11292453
    Abstract: Method for operating a motor vehicle with a hybrid drive, which includes an internal combustion engine connected to an exhaust system of the motor vehicle along with at least one traction electric motor, which is operated via an electric energy accumulator of the motor vehicle and can be coupled to the internal combustion engine, wherein the motor vehicle can be moved via the internal combustion engine and/or the traction electric motor, wherein when movement of the motor vehicle via the internal combustion engine is switched to movement of the motor vehicle solely via the traction electric motor, and the internal combustion engine is decoupled from the traction electric motor, operation of the internal combustion engine is continued, dependent upon at least one piece of exhaust system information describing a condition of the exhaust system.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: April 5, 2022
    Assignee: AUDI AG
    Inventors: Christopher Hohm, Michael Vogt, Norbert Breimhorst, Stefan Appel
  • Method and device for cleaning a jet engine
    Patent number: 11215071
    Abstract: A method for cleaning a jet engine includes introducing a cleaning medium having solid materials into the engine by way of at least one discharging device, wherein the cleaning medium exits from the discharging device at an exit speed of 80 m/s or less.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: January 4, 2022
    Assignee: LUFTHANSA TECHNIK AG
    Inventors: Sebastian Giljohann, Holger Stefan Appel, Dirk Deja
  • Method and control apparatus for operating a hybrid electric vehicle
    Patent number: 11198424
    Abstract: A method for operating a hybrid electric vehicle including an electric machine, a battery and an internal combustion engine, the load point of which is shifted upward to drive the electric machine for charging the battery in the generator mode, wherein a target state of charge of the battery is specified; a required target charging capacity is determined; the load point of the internal combustion engine initially is only shifted upward within an engine-map range of the internal combustion engine.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: December 14, 2021
    Assignee: AUDI AG
    Inventors: Michael Vogt, Alexander Kruse, Stefan Appel, Christopher Hohm
  • METHOD FOR OPERATING A MOTOR VEHICLE WITH HYBRID DRIVE, AND MOTOR VEHICLE WITH HYBRID DRIVE
    Publication number: 20200148192
    Abstract: Method for operating a motor vehicle with a hybrid drive, which includes an internal combustion engine connected to an exhaust system of the motor vehicle along with at least one traction electric motor, which is operated via an electric energy accumulator of the motor vehicle and can be coupled to the internal combustion engine, wherein the motor vehicle can be moved via the internal combustion engine and/or the traction electric motor, wherein when movement of the motor vehicle via the internal combustion engine is switched to movement of the motor vehicle solely via the traction electric motor, and the internal combustion engine is decoupled from the traction electric motor, operation of the internal combustion engine is continued, dependent upon at least one piece of exhaust system information describing a condition of the exhaust system.
    Type: Application
    Filed: September 26, 2019
    Publication date: May 14, 2020
    Applicant: AUDI AG
    Inventors: Christopher HOHM, Michael VOGT, Norbert BREIMHORST, Stefan APPEL
  • METHOD AND CONTROL APPARATUS FOR OPERATING A HYBRID ELECTRIC VEHICLE
    Publication number: 20200010075
    Abstract: A method for operating a hybrid electric vehicle including an electric machine, a battery and an internal combustion engine, the load point of which is shifted upward to drive the electric machine for charging the battery in the generator mode, wherein a target state of charge of the battery is specified; a required target charging capacity is determined; the load point of the internal combustion engine initially is only shifted upward within an engine-map range of the internal combustion engine.
    Type: Application
    Filed: June 12, 2019
    Publication date: January 9, 2020
    Applicant: AUDI AG
    Inventors: Michael VOGT, Alexander KRUSE, Stefan APPEL, Christopher HOHM
  • METHOD AND DEVICE FOR CLEANING A JET ENGINE
    Publication number: 20180306055
    Abstract: A method for cleaning a jet engine includes introducing a cleaning medium having solid materials into the engine by way of at least one discharging device, wherein the cleaning medium exits from the discharging device at an exit speed of 80 m/s or less.
    Type: Application
    Filed: May 26, 2016
    Publication date: October 25, 2018
    Inventors: Sebastian Giljohann, Holger Stefan Appel, Dirk Deja