Patents Examined by Robert Reavis
  • On-board diagnostic test of oxygen sensor
    Patent number: 5801295
    Abstract: An on-board diagnostic test for an exhaust gas oxygen sensor includes sensing the output of the oxygen sensor and summing the output over a specified period to determine the length of the trace of the sensor voltage versus time. Such length over a given time period indicates the activity of the sensor. This data is compared to a threshold to determine if the exhaust gas oxygen sensor meets certain performance requirements.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: September 1, 1998
    Assignee: Ford Global Technologies, Inc.
    Inventors: Christopher Kirk Davey, Anand J. Shah, Donald Fenwick Dickison, David R. Nader, Robert Joseph Jerger, Michael Igor Kluzner