Patents by Inventor Ralph Jurjevec

Ralph Jurjevec 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).

  • Exhaust valve assembly for a two-stroke internal combustion engine
    Patent number: 9341092
    Abstract: An exhaust valve assembly for a two-stroke internal combustion engine has a valve actuator having a first pressure chamber and a second pressure chamber, and a valve operatively connected to the valve actuator. The first and second pressure chambers are adapted for selectively receiving one of a first pressure and a second pressure. The first pressure is higher than the second pressure. The valve actuator moves the valve between at least a first valve position and a second valve position. The valve actuator moves the valve to the first valve position when the first pressure is supplied to the first pressure chamber and the second pressure is supplied to the second pressure chamber. The valve actuator moves the valve to the second valve position when the second pressure is supplied to the first pressure chamber and the first pressure is supplied to the second pressure chamber.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: May 17, 2016
    Assignee: BRP—POWERTRAIN GMBH & Co. KG
    Inventors: Gunther Zauner, Markus Doppelbauer, Christian Berger, Ralph Jurjevec, Guenther Roland
  • EXHAUST VALVE ASSEMBLY FOR A TWO-STROKE INTERNAL COMBUSTION ENGINE
    Publication number: 20160032793
    Abstract: An exhaust valve assembly for a two-stroke internal combustion engine has a valve actuator having a first pressure chamber and a second pressure chamber, and a valve operatively connected to the valve actuator. The first and second pressure chambers are adapted for selectively receiving one of a first pressure and a second pressure. The first pressure is higher than the second pressure. The valve actuator moves the valve between at least a first valve position and a second valve position. The valve actuator moves the valve to the first valve position when the first pressure is supplied to the first pressure chamber and the second pressure is supplied to the second pressure chamber. The valve actuator moves the valve to the second valve position when the second pressure is supplied to the first pressure chamber and the first pressure is supplied to the second pressure chamber.
    Type: Application
    Filed: July 31, 2014
    Publication date: February 4, 2016
    Inventors: Gunther ZAUNER, Markus DOPPELBAUER, Christian BERGER, Ralph JURJEVEC, Guenther ROLAND
  • INTERNAL COMBUSTION ENGINE FUEL SUPPLY SYSTEM
    Publication number: 20120291747
    Abstract: An internal combustion engine has a fuel supply system which has a fuel pump driving mechanism that limits the relative motion between a part of the mechanism contacting a plunger of the pump and the plunger.
    Type: Application
    Filed: January 28, 2011
    Publication date: November 22, 2012
    Applicant: BRP-POWERTRAIN GMBH & CO. KG
    Inventors: Ralph Jurjevec, Roland Ennsmann, Gunther Zauner, Jean-Charles Pouillard