Patents by Inventor James R. Bartshe

James R. Bartshe 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 and method of managing line pressure in a vehicle during a fault pending condition
    Patent number: 8706306
    Abstract: An exemplary system includes a hydraulic device configured to operate at a fluid pressure. A sensor is configured to measure fluid pressure in the hydraulic device and generate a pressure signal representative of the measured fluid pressure. An actuator configured to regulate fluid flow to the hydraulic device. A control module is configured to identify a fault pending condition based on the measured fluid pressure, increase the fluid pressure in the hydraulic device during the fault pending condition, and iteratively enable and disable the actuator during the fault pending condition to determine if the actuator has failed.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: April 22, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: James R. Bartshe, Syed Naqi
  • System and method of detecting a failed friction element
    Patent number: 8290673
    Abstract: A system includes a friction element having a driving mechanism and a driven mechanism. At least one of the driving mechanism and the driven mechanism is configured to rotate. A drive unit is configured to provide a torque to at least one of the driving mechanism and the driven mechanism. A control processor is configured to diagnose a friction element failure based on a slip speed, which is the difference between rotational speeds of the driving mechanism and the driven mechanism. The control processor is further configured to induce a slip condition as part of a shift process and diagnose the friction element failure if the derived slip speed is substantially zero after inducing the slip condition.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: October 16, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Syed Naqi, Ali K. Naqvi, Lawrence A. Kaminsky, Jy-Jen F. Sah, James R. Bartshe, Peter E. Wu
  • SYSTEM AND METHOD OF DETECTING A FAILED FRICTION ELEMENT
    Publication number: 20120065855
    Abstract: A system includes a friction element having a driving mechanism and a driven mechanism. At least one of the driving mechanism and the driven mechanism is configured to rotate. A drive unit is configured to provide a torque to at least one of the driving mechanism and the driven mechanism. A control processor is configured to diagnose a friction element failure based on a slip speed, which is the difference between rotational speeds of the driving mechanism and the driven mechanism. The control processor is further configured to induce a slip condition as part of a shift process and diagnose the friction element failure if the derived slip speed is substantially zero after inducing the slip condition.
    Type: Application
    Filed: January 27, 2011
    Publication date: March 15, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Syed Naqi, Ali K. Naqvi, Lawrence A. Kaminsky, Jy-Jen F. Sah, James R. Bartshe, Peter E. Wu
  • SYSTEM AND METHOD OF MANAGING LINE PRESSURE IN A VEHICLE DURING A FAULT PENDING CONDITION
    Publication number: 20120065785
    Abstract: An exemplary system includes a hydraulic device configured to operate at a fluid pressure. A sensor is configured to measure fluid pressure in the hydraulic device and generate a pressure signal representative of the measured fluid pressure. An actuator configured to regulate fluid flow to the hydraulic device. A control module is configured to identify a fault pending condition based on the measured fluid pressure, increase the fluid pressure in the hydraulic device during the fault pending condition, and iteratively enable and disable the actuator during the fault pending condition to determine if the actuator has failed.
    Type: Application
    Filed: December 17, 2010
    Publication date: March 15, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: James R. Bartshe, Syed Naqi