Patents by Inventor Dave Zwetz

Dave Zwetz 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).

  • Air/fuel ratio control using a display interface
    Patent number: 6947823
    Abstract: A method and apparatus for controlling an air/fuel ratio of an internal combustion engine having a programmable air/fuel ratio control. The method and apparatus includes pre-programming a coarse air/fuel ratio setting, determining a condition of the air/fuel ratio being at an undesired value, and programming a fine air/fuel ratio setting using a display interface.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: September 20, 2005
    Assignee: Caterpillar Inc
    Inventors: Greg Hasler, Dave Zwetz
  • Air/fuel ratio control using a display interface
    Publication number: 20040107039
    Abstract: A method and apparatus for controlling an air/fuel ratio of an internal combustion engine having a programmable air/fuel ratio control. The method and apparatus includes pre-programming a coarse air/fuel ratio setting, determining a condition of the air/fuel ratio being at an undesired value, and programming a fine air/fuel ratio setting using a display interface.
    Type: Application
    Filed: December 3, 2002
    Publication date: June 3, 2004
    Inventors: Greg Hasler, Dave Zwetz