Patents by Inventor Geoffrey McNabb

Geoffrey McNabb 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).

  • Oxygen sensor output correction systems and methods
    Patent number: 9133785
    Abstract: An oxygen sensor system for a vehicle includes a pump control module, a correction module, and a fuel control module. While fueling of an engine is cut off, the pump control module selectively turns ON an air pump that pumps ambient air into an exhaust system of the vehicle upstream of a universal exhaust gas oxygen (UEGO) sensor and a catalyst. The correction module receives an output of the UEGO sensor, selectively determines a correction for the output of the UEGO sensor when the air pump is ON and the fuel is cut off, and adjusts the output of the UEGO sensor based on the correction to produce a corrected output. The fuel control module, during fueling of the engine, selectively controls the fueling based on the corrected output.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: September 15, 2015
    Inventors: Michael L. Kociba, Bradley Gibson, Eric M. Hall, Geoffrey McNabb
  • OXYGEN SENSOR OUTPUT CORRECTION SYSTEMS AND METHODS
    Publication number: 20130289848
    Abstract: An oxygen sensor system for a vehicle includes a pump control module, a correction module, and a fuel control module. While fueling of an engine is cut off, the pump control module selectively turns ON an air pump that pumps ambient air into an exhaust system of the vehicle upstream of a universal exhaust gas oxygen (UEGO) sensor and a catalyst. The correction module receives an output of the UEGO sensor, selectively determines a correction for the output of the UEGO sensor when the air pump is ON and the fuel is cut off, and adjusts the output of the UEGO sensor based on the correction to produce a corrected output. The fuel control module, during fueling of the engine, selectively controls the fueling based on the corrected output.
    Type: Application
    Filed: April 27, 2012
    Publication date: October 31, 2013
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Michael L. Kociba, Bradley Gibson, Eric M. Hall, Geoffrey McNabb