Patents by Inventor Michael L Kreikemeier

Michael L Kreikemeier 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).

  • Automatic tuning of fuel injected engines
    Patent number: 6745620
    Abstract: A method and apparatus for automatic tuning of fuel injected engines includes an air-fuel ratio sensor, a load device for controlling engine RPM, a digital computer and a display device. The digital computer displays a plurality of throttle positions to an operator who sets the throttle of said engine to correspond to said display of throttle position. The digital computer varies the engine RPM over the operating range of the engine to determine corresponding map values for storage in an injector signal modifier.
    Type: Grant
    Filed: February 18, 2002
    Date of Patent: June 8, 2004
    Assignee: Dynojet Research, Inc.
    Inventors: Michael L Kreikemeier, Lester Meeks
  • FUEL INJECTION SYSTEM METHOD AND APPARTUS USING OXYGEN SENSOR SIGNAL CONDITIONING TO MODIFY AIR/FUEL RATIO
    Publication number: 20040020480
    Abstract: A method and apparatus for externally modifying the operation of a closed loop electronic fuel injection control system that is normally used with a standard oxygen sensor, which method and apparatus includes replacing the standard oxygen sensor with a wide band oxygen sensor. The signal from the wide band oxygen sensor is processed in a first signal-conditioning module and coupled to the input of the electronic fuel injection control system. The first signal-conditioning module simulates the appearance of a standard oxygen sensor to the electronic fuel injection control system. In a second embodiment, a method and apparatus for externally modifying the operation of a closed loop electronic fuel injection control system that is normally used with a wide band oxygen sensor, includes intercepting the signal from the wide band oxygen sensor in a second signal-conditioning module.
    Type: Application
    Filed: August 5, 2002
    Publication date: February 5, 2004
    Inventors: Michael L. Kreikemeier, Chad D. Beauregard
  • Fuel injection system method and apparatus using oxygen sensor signal conditioning to modify air/fuel ratio
    Patent number: 6681752
    Abstract: A method and apparatus for externally modifying the operation of a closed loop electronic fuel injection control system that is normally used with a standard oxygen sensor, which method and apparatus includes replacing the standard oxygen sensor with a wide band oxygen sensor. The signal from the wide band oxygen sensor is processed in a first signal-conditioning module and coupled to the input of the electronic fuel injection control system. The first signal-conditioning module simulates the appearance of a standard oxygen sensor to the electronic fuel injection control system. In a second embodiment, a method and apparatus for externally modifying the operation of a closed loop electronic fuel injection control system that is normally used with a wide band oxygen sensor, includes intercepting the signal from the wide band oxygen sensor in a second signal-conditioning module.
    Type: Grant
    Filed: August 5, 2002
    Date of Patent: January 27, 2004
    Assignee: Dynojet Research Company
    Inventors: Michael L Kreikemeier, Chad D Beauregard
  • Automatic tuning of fuel injected engines
    Publication number: 20020170549
    Abstract: A method and apparatus for automatic tuning of fuel injected engines includes an air-fuel ratio sensor, a load device for controlling engine RPM, a digital computer and a display device. The digital computer displays a plurality of throttle positions to an operator who sets the throttle of said engine to correspond to said display of throttle position. The digital computer varies the engine RPM over the operating range of the engine to determine corresponding map values for storage in an injector signal modifier.
    Type: Application
    Filed: February 18, 2002
    Publication date: November 21, 2002
    Inventors: Michael L. Kreikemeier, Lester Meeks