Patents by Inventor Eric E. Sollenberger

Eric E. Sollenberger 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).

  • Rail pressure sampling before fuel injection events
    Patent number: 7188608
    Abstract: In common rail fuel injection systems, a sensed rail pressure is used to determine control signals to produce desired injection characteristics. Because rail pressure fluctuates, especially during cold start procedures, and because the rail pressure must be sensed before the injection event to be controlled, the accuracy of the timing and quantity of the injection event can be compromised if the rail pressure at the start of the injection event is different from the sensed rail pressure. In order to produce more accurate fuel injection characteristics, the rail pressure is sensed after the end of control signal for an immediately preceeding injection event but at least a predetermined time before the start of control signal for a succeeding injection event.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: March 13, 2007
    Assignee: Caterpillar Inc.
    Inventors: Jeremy J. Wilson, Eric E. Sollenberger
  • Rail pressure sampling before fuel injection events
    Publication number: 20030106534
    Abstract: In common rail fuel injection systems, a sensed rail pressure is used to determine control signals to produce desired injection characteristics. Because rail pressure fluctuates, especially during cold start procedures, and because the rail pressure must be sensed before the injection event to be controlled, the accuracy of the timing and quantity of the injection event can be compromised if the rail pressure at the start of the injection event is different from the sensed rail pressure. In order to produce more accurate fuel injection characteristics, the rail pressure is sensed after the end of control signal for an immediately preceeding injection event but at least a predetermined time before the start of control signal for a succeeding injection event.
    Type: Application
    Filed: December 11, 2001
    Publication date: June 12, 2003
    Inventors: Jeremy J. Wilson, Eric E. Sollenberger
  • Configurable speed timing interrupts
    Patent number: 6144914
    Abstract: An engine controller including programmable interrupt means connected with an engine speed sensor permits the controller to have configurable speed timing interrupts.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: November 7, 2000
    Assignee: Caterpillar Inc.
    Inventors: Errol W. Davis, Eric E. Sollenberger