Patents by Inventor John E. Bradley, Sr.

John E. Bradley, Sr. 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).

  • Active adaptive bias for closed loop air/fuel control system
    Patent number: 6604357
    Abstract: An engine control system includes an adaptive bias sub-system (100) that generates bias values for controlling the air-fuel ratio. The sub-system (100) includes an integral controller (118) that reads an error signal from a post-catalyst switching EGO sensor (112). A plurality of noise isolation integrators (122) filter any noise resulting from a particular engine operating condition (e.g. acceleration, deceleration, idling) from the integrated error signal and stores the signal in a corresponding keep-alive memory (124) as a bias value for that engine operating condition. In a preferred embodiment, the post-catalyst feedback loop includes a gated proportional controller 116 that turns on for a limited period of time after the post-catalyst switching EGO sensor (112) switches states.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: August 12, 2003
    Assignee: Ford Global Technologies, Inc.
    Inventors: John E. Bradley, Sr., Ahmed A. Omara, Douglas Ray Hamburg
  • Active adaptive bias for closed loop air/fuel control system
    Patent number: 6311680
    Abstract: An engine control system includes an adaptive bias sub-system (100) that generates bias values for controlling the air-fuel ratio. The sub-system (100) includes an integral controller (118) that reads an error signal from a post-catalyst switching EGO sensor (112). A plurality of noise isolation integrators (122) filter any noise resulting from a particular engine operating condition (e.g. acceleration, deceleration, idling) from the integrated error signal and stores the signal in a corresponding keep-alive memory (124) as a bias value for that engine operating condition. In a preferred embodiment, the post-catalyst feedback loop includes a gated proportional controller 116 that turns on for a limited period of time after the post-catalyst switching EGO sensor (112) switches states.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: November 6, 2001
    Assignee: Ford Global Technologies, Inc.
    Inventors: John E. Bradley, Sr., Ahmed A. Omara, Douglas Ray Hamburg