Patents by Inventor Volkmar Kern

Volkmar 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).

  • Patent number: 7926736
    Abstract: An apparatus for injecting fuel into an internal combustion engine having a fuel injector acted on with highly pressurized fuel actuated by means of a metering valve device that is able to control the pressure in a pressure booster control chamber so that in a pressure booster pressure chamber delimited by a pressure booster piston which can be filled via a check valve with high-pressure fuel and communicates with an injection valve member pressure chamber, the pressure booster piston increases the pressure, causing an injection valve member for injecting fuel to open.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: April 19, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Achim Brenk, Hans-Christoph Magel, Volkmar Kern, Goran Kanis
  • Publication number: 20080121735
    Abstract: An apparatus for injecting fuel into an internal combustion engine having a fuel injector acted on with highly pressurized fuel actuated by means of a metering valve device that is able to control the pressure in a pressure booster control chamber so that in a pressure booster pressure chamber delimited by a pressure booster piston which can be filled via a check valve with high-pressure fuel and communicates with an injection valve member pressure chamber, the pressure booster piston increases the pressure, causing an injection valve member for injecting fuel to open.
    Type: Application
    Filed: October 19, 2005
    Publication date: May 29, 2008
    Inventors: Achim Brenk, Hans-Christoph Magel, Volkmar Kern, Goran Kanis
  • Patent number: 7059303
    Abstract: A fuel injection system for internal combustion engines, having a fuel injector that can be supplied from a high-pressure fuel source, wherein a pressure booster that is connected between the fuel injector and the high-pressure fuel source, and a pressure booster are proposed, in which a movable piston of the pressure booster divides a room that is connected to the high-pressure fuel source from a high-pressure chamber, communicating with the injector, and from a rear chamber, and the high-pressure chamber can be made to communicate with the rear chamber via a fuel line, so that the high-pressure chamber can be filled with fuel via the rear chamber.
    Type: Grant
    Filed: April 27, 2002
    Date of Patent: June 13, 2006
    Assignee: Robert Bosch GmbH
    Inventors: Christoph Magel, Volkmar Kern
  • Patent number: 6962141
    Abstract: A device for injecting fuel into the combustion chamber of an internal combustion engine, a high-pressure accumulator, a pressure booster, and a metering valve. The pressure booster has a working chamber and a control chamber that are separated from each other by an axially moving piston. A pressure change in the control chamber of the pressure booster causes a pressure change in a compression chamber of the pressure booster. The compression chamber communicates with a hydraulic chamber that acts on an injection valve element. The piston that acts on the compression chamber of the pressure booster is provided with control sections that can be used to relieve the pressure in the hydraulic chamber of the injection valve element.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: November 8, 2005
    Assignee: Robert Bosch GmbH
    Inventor: Volkmar Kern
  • Publication number: 20050103310
    Abstract: A device for injecting fuel into the combustion chamber of an internal combustion engine, a high-pressure accumulator, a pressure booster, and a metering valve. The pressure booster has a working chamber and a control chamber that are separated from each other by an axially moving piston. A pressure change in the control chamber of the pressure booster causes a pressure change in a compression chamber of the pressure booster. The compression chamber communicates with a hydraulic chamber that acts on an injection valve element. The piston that acts on the compression chamber of the pressure booster is provided with control sections that can be used to relieve the pressure in the hydraulic chamber of the injection valve element.
    Type: Application
    Filed: April 3, 2003
    Publication date: May 19, 2005
    Inventor: Volkmar Kern
  • Publication number: 20040149265
    Abstract: A fuel injection system for internal combustion engines, having a fuel injector that can be supplied from a high-pressure fuel source, wherein a pressure booster that is connected between the fuel injector and the high-pressure fuel source, and a pressure booster are proposed, in which a movable piston of the pressure booster divides a room that is connected to the high-pressure fuel source from a high-pressure chamber, communicating with the injector, and from a rear chamber, and the high-pressure chamber (40) can be made to communicate with the rear chamber (38) via a fuel line (46; 75), so that the high-pressure chamber can be filled with fuel via the rear chamber.
    Type: Application
    Filed: November 17, 2003
    Publication date: August 5, 2004
    Inventors: Christoph Magel, Volkmar Kern