Patents by Inventor Martin Vornhem

Martin Vornhem 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 and apparatus for controlling the operation of a motor vehicle drive train
    Patent number: 6945907
    Abstract: A target engine rotational speed depending at least upon the position of an accelerator pedal position and a motor vehicle speed is determined in a method for controlling the operation of a motor vehicle drive train having a drive motor and a branched power transmission with several steplessly adjustable transmission ratio regions, between which shifting takes place at a predetermined range shift transmission ratio. A transmission ratio corresponding to the target engine rotational speed and vehicle speed is determined and set, whereby the change with respect to time of the accelerator pedal position and/or the change with respect to time of the target engine rotational speed is used for determining the target engine rotational speed and is filtered when a difference between the actual transmission ratio and a transmission ratio shift range falls below a limit value.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: September 20, 2005
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Martin Vornhem, Michael Reuschel, Christian Lauinger, Franz Bitzer
  • Method and apparatus for controlling the operation of a motor vehicle drive train
    Publication number: 20040204287
    Abstract: A target engine rotational speed depending at least upon the position of an accelerator pedal position and a motor vehicle speed is determined in a method for controlling the operation of a motor vehicle drive train having a drive motor and a branched power transmission with several steplessly adjustable transmission ratio regions, between which shifting takes place at a predetermined range shift transmission ratio. A transmission ratio corresponding to the target engine rotational speed and vehicle speed is determined and set, whereby the change with respect to time of the accelerator pedal position and/or the change with respect to time of the target engine rotational speed is used for determining the target engine rotational speed and is filtered when a difference between the actual transmission ratio and a transmission ratio shift range falls below a limit value.
    Type: Application
    Filed: January 9, 2004
    Publication date: October 14, 2004
    Applicant: Luk Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Martin Vornhem, Michael Reuschel, Christian Lauinger, Franz Bitzer