Patents by Inventor Nicholas C. Jasko

Nicholas C. Jasko 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 and apparatus for adapting minimum torque converter slip for neutral idle control
    Patent number: 8265848
    Abstract: A method adaptively learns torque converter (TC) slip in a transmission having a hydrodynamic torque converter assembly by setting a baseline TC slip profile, determining an actual TC slip value at different temperatures, generating an adapted TC slip profile by adapting the baseline TC slip profile in response to the actual TC slip values, and controlling the amount of TC slip during a neutral idle (NI) state of the transmission using the adapted TC slip profile. A vehicle includes a torque converter and a controller. The controller calibrates the TC slip during a first transmission state, and controls the amount of TC slip during a second transmission state. The controller measures actual TC slip data points, and adapts a TC slip profile to more closely approximate a natural slip curve of the vehicle in response to the actual slip TC slip value data points.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: September 11, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Ronald F. Lochocki, Jr., Nicholas C. Jasko
  • METHOD AND APPARATUS FOR ADAPTING MINIMUM TORQUE CONVERTER SLIP FOR NEUTRAL IDLE CONTROL
    Publication number: 20100170740
    Abstract: A method adaptively learns torque converter (TC) slip in a transmission having a hydrodynamic torque converter assembly by setting a baseline TC slip profile, determining an actual TC slip value at different temperatures, generating an adapted TC slip profile by adapting the baseline TC slip profile in response to the actual TC slip values, and controlling the amount of TC slip during a neutral idle (NI) state of the transmission using the adapted TC slip profile. A vehicle includes a torque converter and a controller. The controller calibrates the TC slip during a first transmission state, and controls the amount of TC slip during a second transmission state. The controller measures actual TC slip data points, and adapts a TC slip profile to more closely approximate a natural slip curve of the vehicle in response to the actual slip TC slip value data points.
    Type: Application
    Filed: January 6, 2009
    Publication date: July 8, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Ronald F. Lochocki, JR., Nicholas C. Jasko