Patents by Inventor Steven J. Andrasko

Steven J. Andrasko 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).

  • Oil life monitoring system for a diesel engine
    Patent number: 7614284
    Abstract: An oil life monitoring system for a diesel engine system includes a viscosity loss module, a viscosity gain module, and a remaining oil life module. The viscosity loss module determines a percentage of viscosity loss of engine oil based on fuel accumulation in the engine oil. The viscosity gain module determines a percentage of viscosity gain of engine oil based on fuel evaporation and/or soot accumulation in the engine oil. The remaining oil life module communicates with the viscosity loss module and the viscosity gain module and determines a percentage of oil life remaining based on the percentage of viscosity loss and/or the percentage of viscosity gain.
    Type: Grant
    Filed: January 8, 2007
    Date of Patent: November 10, 2009
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Matthew J. Snider, David P. Quigley, Richard A. Barkman, Robert T. Stockwell, Steven J. Andrasko
  • METHOD AND APPARATUS FOR LIMITING WHEEL SLIP
    Publication number: 20090222191
    Abstract: An engine control system comprises an engine speed control module and an idle limiting module. The engine speed control module selectively controls an engine based on an idle speed request. The idle limiting module selectively reduces the idle speed request by an amount that is based on a wheel slip value.
    Type: Application
    Filed: January 20, 2009
    Publication date: September 3, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventor: Steven J. Andrasko
  • Oil life monitoring system for a diesel engine
    Publication number: 20080163678
    Abstract: An oil life monitoring system for a diesel engine system includes a viscosity loss module, a viscosity gain module, and a remaining oil life module. The viscosity loss module determines a percentage of viscosity loss of engine oil based on fuel accumulation in the engine oil. The viscosity gain module determines a percentage of viscosity gain of engine oil based on fuel evaporation and/or soot accumulation in the engine oil. The remaining oil life module communicates with the viscosity loss module and the viscosity gain module and determines a percentage of oil life remaining based on the percentage of viscosity loss and/or the percentage of viscosity gain.
    Type: Application
    Filed: January 8, 2007
    Publication date: July 10, 2008
    Inventors: Matthew J. Snider, David P. Quigley, Richard A. Barkman, Robert T. Stockwell, Steven J. Andrasko