Patents by Inventor John Ogalla Waldman

John Ogalla Waldman 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 for controlling fuel injection timing to decrease emissions during transient engine operation
    Patent number: 9328690
    Abstract: A control system for an engine includes an injection timing adjustment module and an injection control module. The injection timing adjustment module generates an adjusted fuel injection timing when a fuel request is received and the engine is operating in a transient state, wherein the adjusted fuel injection timing is based on a base fuel injection timing, an elapsed time since the fuel request, and at least one of a plurality of engine operating parameters. The injection control module controls fuel injection based on the adjusted fuel injection timing for a period, and controls fuel injection based on the base fuel injection timing after the period.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: May 3, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Jonathan T. Shibata, Joshua D. Cowgill, John Ogalla Waldman, David P. Sczomak
  • System and method for controlling fuel injection to decrease particulate emissions during transient engine operation
    Patent number: 8645043
    Abstract: A control system for an engine includes a transient operation detection module, an injection determination module, and an injection control module. The transient operation detection module detects whether the engine is operating in a transient state. The injection determination module, based on an elapsed time since a fuel request and at least one of a plurality of engine operating parameters, at least one of (i) increases a number of fuel injections per combustion cycle to N, and (ii) adjusts periods for each of the fuel injections, wherein N is an integer greater than or equal to two. The injection control module controls fuel injection during the transient state based on at least one of (i) N fuel injections per combustion cycle and (ii) the adjusted periods.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: February 4, 2014
    Inventors: Jonathan T. Shibata, Joshua D. Cowgill, John Ogalla Waldman, Halim G. Santoso, J. Michael Ellenberger
  • SYSTEM AND METHOD FOR CONTROLLING FUEL INJECTION TO DECREASE PARTICULATE EMISSIONS DURING TRANSIENT ENGINE OPERATION
    Publication number: 20120185151
    Abstract: A control system for an engine includes a transient operation detection module, an injection determination module, and an injection control module. The transient operation detection module detects whether the engine is operating in a transient state. The injection determination module, based on an elapsed time since a fuel request and at least one of a plurality of engine operating parameters, at least one of (i) increases a number of fuel injections per combustion cycle to N, and (ii) adjusts periods for each of the fuel injections, wherein N is an integer greater than or equal to two. The injection control module controls fuel injection during the transient state based on at least one of (i) N fuel injections per combustion cycle and (ii) the adjusted periods.
    Type: Application
    Filed: February 28, 2011
    Publication date: July 19, 2012
    Applicant: GM Global Technology Operations LLC
    Inventors: Jonathan T. Shibata, Joshua D. Cowgill, John Ogalla Waldman, Halim G. Santoso, J. Michael Ellenberger
  • SYSTEM AND METHOD FOR CONTROLLING FUEL INJECTION TIMING TO DECREASE EMISSIONS DURING TRANSIENT ENGINE OPERATION
    Publication number: 20120080009
    Abstract: A control system for an engine includes an injection timing adjustment module and an injection control module. The injection timing adjustment module generates an adjusted fuel injection timing when a fuel request is received and the engine is operating in a transient state, wherein the adjusted fuel injection timing is based on a base fuel injection timing, an elapsed time since the fuel request, and at least one of a plurality of engine operating parameters. The injection control module controls fuel injection based on the adjusted fuel injection timing for a period, and controls fuel injection based on the base fuel injection timing after the period.
    Type: Application
    Filed: November 11, 2010
    Publication date: April 5, 2012
    Applicant: GM Global Technology Operations, Inc.
    Inventors: Jonathan T. Shibata, Joshua D. Cowgill, John Ogalla Waldman, David P. Sczomak