Patents by Inventor Gregory D. Polen

Gregory D. Polen 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).

  • Cylinder deactivation system timing control synchronization
    Patent number: 6752121
    Abstract: An engine control system in a vehicle including a variable displacement internal combustion engine configured as an overhead valve engine including telescoping lifters hydraulically actuated by solenoid valves, via hydraulic lines, to activate and deactivate valves and cylinders in the variable displacement internal combustion engine, a controller for controlling the displacement of the variable displacement internal combustion engine, and where the controller determines the delay time between a displacement command and the actual change in the position of the telescoping lifters.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: June 22, 2004
    Assignee: General Motors Corporation
    Inventors: Allen B. Rayl, Gregory D. Polen
  • Cylinder deactivation system timing control synchronization
    Publication number: 20020189575
    Abstract: An engine control system in a vehicle including a variable displacement internal combustion engine configured as an overhead valve engine including telescoping lifters hydraulically actuated by solenoid valves, via hydraulic lines, to activate and deactivate valves and cylinders in the variable displacement internal combustion engine, a controller for controlling the displacement of the variable displacement internal combustion engine, and where the controller determines the delay time between a displacement command and the actual change in the position of the telescoping lifters.
    Type: Application
    Filed: May 17, 2002
    Publication date: December 19, 2002
    Inventors: Allen B. Rayl, Gregory D. Polen