Patents by Inventor Otto Hagenauer

Otto Hagenauer 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: 6712296
    Abstract: A fuel injection valve for internal combustion engines, having a pistonlike valve member, axially movable counter to the closing force of a spring, in the bore of a valve body and that controls at least one injection opening. A control chamber surrounding the valve member is disposed between a guided portion of the valve member and an oil leakage chamber that receives the spring; the valve member communicates with an inlet conduit via a throttling annular gap and with the oil leakage chamber via a control bore. In the closing motion of the valve member away from the valve seat, fuel is positively displaced out of the control chamber into the oil leakage chamber by a pressure face. In a portion of the valve member stroke, the control chamber is closed, except for a throttle gap formed between a cylindrical portion and the control bore, toward the oil leakage chamber, and the fuel pressure in the control chamber rises, since the outflow can now take place only via the throttle gap.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: March 30, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Jaroslaw Hlousek, Heinrich Werger, Otto Hagenauer