Patents by Inventor Dietbert Schonfelder

Dietbert Schonfelder 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).

  • Method and device for controlling an actuator element
    Patent number: 5957109
    Abstract: A process and device for triggering an actuator are described, in particular an actuator triggered in cycles for an internal combustion engine. The triggering signal frequency can be changed to prevent resonance effects. The triggering signal frequency is varied between a first and a second limit value over time according to a preselected function.
    Type: Grant
    Filed: August 25, 1998
    Date of Patent: September 28, 1999
    Assignee: Robert Bosch GmbH
    Inventors: Dietbert Schonfelder, Kai-Lars Barbehon, Joachim Tauscher, Wolfgang Dorr
  • System for controlling a fuel-metering device
    Patent number: 5755209
    Abstract: A system is provided for controlling a fuel-metering device, for a diesel engine. First means generate a first signal for triggering a first actuating means (115) for establishing the start of pump delivery and the end of delivery. Second means generate a second signal for triggering a second actuating means (125) for establishing the delivery rate. In this case, a signal characterizing the start of pump delivery is taken into consideration by the second means.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: May 26, 1998
    Assignee: Robert Bosch GmbH
    Inventors: Werner Fischer, Dietbert Schonfelder, Uwe Reuter, Peter Lutz, Peter Schmitz