Patents by Inventor Timothy John Hartrey

Timothy John Hartrey 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).

  • Cross-checking processors for powertrain control systems using a dedicated serial data link
    Patent number: 7269491
    Abstract: An engine management system for a vehicle includes engine and transmission control modules that are connected to a serial vehicle data bus. A dedicated serial data bus is connected to the transmission control module and the engine control module. The engine and the transmission control modules perform processor validity and integrity checks over the dedicated data bus. In an alternate powertrain management system, engine and transmission control modules are connected to a serial vehicle data bus.
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: September 11, 2007
    Assignee: General Motors Corporation
    Inventors: Kerfegar Khurshed Katrak, Paul Alan Bauerle, Bruce A. Rogers, James L. Worthing, Mark Henry Costin, Robert J. Schaller, James T. Purcell, Timothy John Hartrey, Patrick J. O'Leary
  • Methods and apparatus for determining the condition of a sensor and identifying the failure thereof
    Patent number: 7228249
    Abstract: Methods and apparatus are provided which generate an error signal if a sensor is either anticipated to fail or fails. At least two sensors provide input signals having magnitudes that approximately correspond to a sensed event. A processor calculates an actual correlation error for the two signals. A processor then further calculates an estimated new correlation value based on the difference of a stored initial correlation value and the actual correlation error. After a predetermined number of estimated correlation values are calculated, the error signal is generated if the difference between an estimated correlation value and the actual correlation error exceeds a predetermined threshold.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: June 5, 2007
    Assignee: General Motors Corporation
    Inventor: Timothy John Hartrey
  • Methods and apparatus for determining the condition of a sensor and identifying the failure thereof
    Publication number: 20040098228
    Abstract: Methods and apparatus are provided which generate an error signal if a sensor is either anticipated to fail or fails. At least two sensors provide input signals having magnitudes that approximately correspond to a sensed event. A processor calculates an actual correlation error for the two signals. A processor then further calculates an estimated new correlation value based on the difference of a stored initial correlation value and the actual correlation error. After a predetermined number of estimated correlation values are calculated, the error signal is generated if the difference between an estimated correlation value and the actual correlation error exceeds a predetermined threshold.
    Type: Application
    Filed: November 19, 2002
    Publication date: May 20, 2004
    Inventor: Timothy John Hartrey
  • Cross-checking processors for powertrain control systems using a dedicated serial data link
    Publication number: 20030216848
    Abstract: An engine management system for a vehicle includes engine and transmission control modules that are connected to a serial vehicle data bus. A dedicated serial data bus is connected to the transmission control module and the engine control module. The engine and the transmission control modules perform processor validity and integrity checks over the dedicated data bus. In an alternate powertrain management system, engine and transmission control modules are connected to a serial vehicle data bus.
    Type: Application
    Filed: May 16, 2002
    Publication date: November 20, 2003
    Inventors: Kerfegar Khurshed Katrak, Paul Alan Bauerle, Bruce A. Rogers, James L. Worthing, Mark Henry Costin, Robert J. Schaller, James T. Purcell, Timothy John Hartrey, Patrick J. O'Leary