Patents by Inventor John David Barta

John David Barta 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 system for initiating an engine after-run state and controlling a nitrogen oxide sensor self-diagnostic tool
    Patent number: 9109480
    Abstract: A system and method for initiating an engine after-run state and controlling a nitrogen oxide sensor self-diagnostic tool are provided. The system may include an internal combustion engine, an exhaust system, a selective catalytic reduction (SCR) device and at least two NOx sensors to measure the efficiency of the SCR device and a controller or host machine. The controller, via the present method, executes a first control action to disable the self-diagnostic tool when one of an occurrence of a particulate filter regeneration event and a non-occurrence of a calibration threshold is detected. The controller executes a second control action, initiating an engine after-run state and enabling the self-diagnostic tool when one of a non-occurrence of a particulate filter regeneration event and an occurrence of the calibration threshold is detected.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: August 18, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Janean E Kowalkowski, John David Barta, Scott McLane, Marek L. Wilmanowicz, Benjamin Radke, Jason J Chung
  • METHOD AND SYSTEM FOR INITIATING AN ENGINE AFTER-RUN STATE AND CONTROLLING A NITROGEN OXIDE SENSOR SELF-DIAGNOSTIC TOOL
    Publication number: 20140144126
    Abstract: A system and method for initiating an engine after-run state and controlling a nitrogen oxide sensor self-diagnostic tool are provided. The system may include an internal combustion engine, an exhaust system, a selective catalytic reduction (SCR) device and at least two NOx sensors to measure the efficiency of the SCR device and a controller or host machine. The controller, via the present method, executes a first control action to disable the self-diagnostic tool when one of an occurrence of a particulate filter regeneration event and a non-occurrence of a calibration threshold is detected. The controller executes a second control action, initiating an engine after-run state and enabling the self-diagnostic tool when one of a non-occurrence of a particulate filter regeneration event and an occurrence of the calibration threshold is detected.
    Type: Application
    Filed: November 29, 2012
    Publication date: May 29, 2014
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Janean E. Kowalkowski, John David Barta, Scott McLane, Marek L. Wilmanowicz, Benjamin Radke, Jason J. Chung