Patents by Inventor John Andrew BYERLY

John Andrew BYERLY 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).

  • Publication number: 20120123654
    Abstract: A system and method for controlling double transition shifts in an automatic transmission having multiple gear sections. During a double transition shift, the system performs simultaneous closed loop control of the primary oncoming clutch in the primary gear section and the secondary off-going clutch of the secondary gear section. Before the input shaft of the secondary gear section is fully pulled down or the secondary off-going clutch becomes overheated, the system switches closed loop control of the input shaft to the secondary on-coming clutch of the secondary gear section. The system utilizes model-based calculations to determine the initial clutch pressure settings when a clutch enters closed loop control.
    Type: Application
    Filed: November 11, 2011
    Publication date: May 17, 2012
    Inventors: John Andrew BYERLY, John P. KRESSE, Mark A. RAINS, Jeffrey K. RUNDE