Patents by Inventor Severin Kern

Severin Kern 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).

  • Fuel-injection valve for internal combustion engine
    Patent number: 6892967
    Abstract: The control space of the fuel injection valve is delimited, on the one hand, by the piston of the injection-valve member, on the other hand by the slide-valve body and circumferentially by the sleeve. Both the double-acting piston and the slide-valve body are guided in a narrow sliding fit on the sleeve. The throttle passage runs through the slide-valve body and is flow-connected permanently to the control passage in the control body. The throttle inlet leads from the high-pressure space into the control passage. The latter, on the side facing away from the slide-valve body, can, via a pilot valve, be connected to a low-pressure space and be separated again from the latter. The connection of the control passage to the low-pressure space leads to a pressure drop in the control space, with the result being that the injection-valve member moves in the direction of the slide-valve body and releases the injection nozzles.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: May 17, 2005
    Assignee: CRT Common Rail Technologies AG
    Inventors: Markus Tappolet, Andreas Carelli, Marco Ganser, Severin Kern, Roland Kolb
  • Fuel-injection valve for internal combustion engine
    Publication number: 20030052198
    Abstract: The control space of the fuel injection valve is delimited, on the one hand, by the piston of the injection-valve member, on the other hand by the slide-valve body and circumferentially by the sleeve. Both the double-acting piston and the slide-valve body are guided in a narrow sliding fit on the sleeve. The throttle passage runs through the slide-valve body and is flow-connected permanently to the control passage in the control body. The throttle inlet leads from the high-pressure space into the control passage. The latter, on the side facing away from the slide-valve body, can, via a pilot valve, be connected to a low-pressure space and be separated again from the latter. The connection of the control passage to the low-pressure space leads to a pressure drop in the control space, with the result being that the injection-valve member moves in the direction of the slide-valve body and releases the injection nozzles.
    Type: Application
    Filed: July 2, 2002
    Publication date: March 20, 2003
    Applicant: COMMON RAIL TECHNOLOGIES AG
    Inventors: Markus Tappolet, Andreas Carelli, Marco Ganser, Severin Kern, Roland Kolb