Patents by Inventor Jerry William Kortge

Jerry William Kortge 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).

  • System to release a stuck lock-pin in a cam phaser
    Patent number: 7565888
    Abstract: A stuck lock-pin release system for a lock-pin in a cam phaser includes a stuck lock-pin detection module and a stuck lock-pin module that communicates with the stuck lock-pin detection module. The stuck-lock pin detection module periodically determines whether a lock-pin in a cam phaser is in a stuck park condition. When the lock-pin is in the stuck park condition, the stuck lock-pin module alternately biases the cam phaser in a first and second direction until the lock-pin is no longer in the stuck park condition.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: July 28, 2009
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Craig Michael Sawdon, Jerry William Kortge, John E. Doane, Gregory J. York
  • Fuzzy logic based cam phaser control
    Patent number: 7353788
    Abstract: A method of controlling a valve of a cam phaser of an internal combustion engine includes determining a delta duty cycle from a position error and a rate of change of error (error dot). A fuzzy gain value is calculated from the delta duty cycle and a correction term. A duty cycle is calculated from an integral gain value and the fuzzy gain value. The duty cycle is then used to control the valve of the cam phaser.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: April 8, 2008
    Assignee: GM Global Technology Operations, Inc.
    Inventor: Jerry William Kortge