Patents by Inventor Dolyn P. Ruffner

Dolyn P. Ruffner 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).

  • Patent number: 5121324
    Abstract: An electronic integrated engine and vehicle management and control system includes an electronic vehicle control module and a fuel injection control module, in communication with each other, which together control the total vehicle and engine operation functions of a heavy duty vehicle. A novel fuel injection timing device is utilized with the control module to allow precise and sophisticated control of engine timing based on a number of engine and vehicle operating parameters as determined by the control modules. Functions such as engine speed control, vehicle road speed control, engine protection shutdown, fuel economy, braking control and diagnostics are performed by the system.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: June 9, 1992
    Assignee: Mack Trucks, Inc.
    Inventors: Guy T. Rini, Oldrich S. Kolarik, James E. Marsden, June M. Warner, Ramin Younessi, Dolyn P. Ruffner, Stephen W. Heffner