Patents by Inventor Kai Barnickel

Kai Barnickel 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 FOR DETERMINING A NEEDLING CLOSING IN A PIEZOINJECTOR
    Publication number: 20120013325
    Abstract: In a method for determining a needle closing of a valve needle that is driven by a piezoactuator, a signal of a voltage present at the piezoactuator is measured and the needle closing is detected from a curve of the signal.
    Type: Application
    Filed: January 5, 2010
    Publication date: January 19, 2012
    Inventors: Erik Tonner, Kai Barnickel
  • Method for timed measurements of the voltage across a device in the charging circuit of a piezoelectric element
    Patent number: 6680620
    Abstract: A method for timed measurement of a voltage across a device in a charging circuit of a piezoelectric element. The voltage across the device is sensed and read at a predefined time in synchronization with an injection event of the at least one piezoelectric actuator. The device may be the piezoelectric element or a buffer capacitor.
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: January 20, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Andreas Hedenetz, Kai Barnickel, Josef Newald, Udo Schulz
  • Method and apparatus for timed measurement of the voltage across a device in the charging circuit of a piezoelectric element
    Publication number: 20020008440
    Abstract: Method and Apparatus for Timed Measurement of the Voltage Across a Device in the Charging Circuit of a Piezoelectric Element
    Type: Application
    Filed: April 2, 2001
    Publication date: January 24, 2002
    Inventors: Andreas Hedenetz, Kai Barnickel, Josef Newald, Udo Schulz