Patents by Inventor Dave G. Lutz

Dave G. Lutz 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 regeneration
    Patent number: 9212971
    Abstract: Methods and systems for heating an oxygen sensor. One system includes an oxygen sensor and controller. The oxygen sensor includes a heater and an electro-chemical measurement cell and a heater. The controller is coupled to the oxygen sensor and is configured to, for each of a plurality of stages of a regeneration process, determine a predetermined temperature for heating the oxygen sensor to, determine a predetermined internal resistance value of an electro-chemical measurement cell of the oxygen sensor associated with the predetermined temperature, apply a pulse-width-modulated signal to the heater, and monitor an internal resistance of the measurement cell while applying the pulse-width-modulated signal to the heater to determine when the internal resistance of the measurement cell reaches the predetermined internal resistance.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: December 15, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Ralf Oesselke, Chris Allumi, Dave G. Lutz
  • OXYGEN SENSOR REGENERATION
    Publication number: 20140047912
    Abstract: Methods and systems for heating an oxygen sensor. One system includes an oxygen sensor and controller. The oxygen sensor includes a heater and an electro-chemical measurement cell and a heater. The controller is coupled to the oxygen sensor and is configured to, for each of a plurality of stages of a regeneration process, determine a predetermined temperature for heating the oxygen sensor to, determine a predetermined internal resistance value of an electro-chemical measurement cell of the oxygen sensor associated with the predetermined temperature, apply a pulse-width-modulated signal to the heater, and monitor an internal resistance of the measurement cell while applying the pulse-width-modulated signal to the heater to determine when the internal resistance of the measurement cell reaches the predetermined internal resistance.
    Type: Application
    Filed: June 19, 2013
    Publication date: February 20, 2014
    Inventors: Ralf Oesselke, Chris Allumi, Dave G. Lutz