Patents by Inventor William P Eichbrecht

William P Eichbrecht 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).

  • 02 Sensor filter
    Patent number: 6668617
    Abstract: A method of filtering an oxygen sensor signal is provided. The method includes obtaining the oxygen sensor signal from the oxygen sensor on a periodic basis. The oxygen sensor signal is then compared to an average oxygen sensor signal value. If the oxygen sensor signal is greater than the average oxygen sensor signal value, a high signal counter is incremented. If the high signal counter is greater than a high signal count threshold, the oxygen sensor signal is forced to a high signal value. If the oxygen sensor signal is less than the average oxygen sensor signal value, a low signal counter is incremented. If the low signal counter is greater than a low signal count threshold, the oxygen sensor signal is forced to the low signal value. The high and low signal count thresholds correspond to a preselected period of time indicating a low or high signal trend within the oxygen sensor signal.
    Type: Grant
    Filed: August 1, 2001
    Date of Patent: December 30, 2003
    Assignee: DaimlerChrysler Corporation
    Inventors: Richard A Radu, Robert J Nankee, II, William P Eichbrecht, Leon O Cribbins, Joseph J Kopera, Jr., George C Mitchell
  • 02 sensor filter
    Publication number: 20030024296
    Abstract: A method of filtering an oxygen sensor signal is provided. The method includes obtaining the oxygen sensor signal from the oxygen sensor on a periodic basis. The oxygen sensor signal is then compared to an average oxygen sensor signal value. If the oxygen sensor signal is greater than the average oxygen sensor signal value, a high signal counter is incremented. If the high signal counter is greater than a high signal count threshold, the oxygen sensor signal is forced to a high signal value. If the oxygen sensor signal is less than the average oxygen sensor signal value, a low signal counter is incremented. If the low signal counter is greater than a low signal count threshold, the oxygen sensor signal is forced to the low signal value. The high and low signal count thresholds correspond to a preselected period of time indicating a low or high signal trend within the oxygen sensor signal.
    Type: Application
    Filed: August 1, 2001
    Publication date: February 6, 2003
    Inventors: Richard A. Radu, Robert J. Nankee, William P. Eichbrecht, Leon O. Cribbins, Joseph J. Kopera, George C. Mitchell