Patents by Inventor Xiayoi Liu

Xiayoi Liu 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 controlling a drive train
    Patent number: 7691029
    Abstract: A method for operation of a drive train having a drive machine and an automatic, unsynchronized gearwheel variable-speed transmission, which can be connected to the drive machine by using an automatic clutch is described. A control device carries out a selection process as a function of vehicle parameters and/or operating variables of the motor vehicle to determine whether a gear change of the unsynchronized gearwheel variable-speed transmission will be carried out with the clutch engaged or disengaged. To ensure reliable operation of the motor vehicle, a gear change is carried out with the clutch disengaged in a time interval after initial starting up of the drive train and/or after starting of the drive machine and/or when a malfunction is identified in a component in the drive train.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: April 6, 2010
    Assignee: Daimler AG
    Inventors: Manfred Guggolz, Werner Hillenbrand, Xiayoi Liu, Detlef Schnitzer, Markus Veit
  • Method for controlling a drive train comprising an automatic clutch
    Publication number: 20060211536
    Abstract: The invention relates to a method for operation of a drive train having a drive machine and an automatic, unsynchronized gearwheel variable-speed transmission, which can be connected to the drive machine by means of an automatic clutch. A control device carries out a selection process as a function of vehicle parameters and/or operating variables of the motor vehicle to determine whether a gear change of the unsynchronized gearwheel variable-speed transmission will be carried out with the clutch engaged or disengaged. In order to ensure reliable operation of the motor vehicle, for the method according to the invention, a gear change is carried out with the clutch disengaged in a time interval after initial starting up of the drive train and/or after starting of the drive machine and/or when a malfunction is identified in a component in the drive train.
    Type: Application
    Filed: October 22, 2003
    Publication date: September 21, 2006
    Applicant: DAIMLERCHRYSLER AG
    Inventors: Manfred Guggolz, Werner Hillenbrand, Xiayoi Liu, Detlef Schnitzer, Markus Veit