Patents by Inventor Ralf Kadura

Ralf Kadura 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: 8468987
    Abstract: An internal combustion engine having eight cylinders in V-configuration, wherein a first cylinder bank and a second cylinder bank are disposed opposite one another. The internal combustion engine includes a cross-plane crankshaft and has a firing order of a 90° crank angle from cylinder to cylinder. An intake camshaft and an exhaust camshaft are associated with each cylinder bank for actuating at least one intake gas exchange valve and one exhaust gas exchange valve for each cylinder. The gas exchange intake valves that are actuated at a 90° crank angle in the same cylinder bank have a larger valve stroke than the gas exchange intake valves in same cylinder bank actuated immediately prior thereto. The gas exchange intake valves in the same cylinder bank actuated immediately prior thereto have a smaller valve stroke than all the remaining gas exchange intake valves of both cylinder banks.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: June 25, 2013
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Wolfram Kirchweger, Ralf Kadura
  • Publication number: 20120210960
    Abstract: An internal combustion engine having eight cylinders in V-configuration, wherein a first cylinder bank and a second cylinder bank are disposed opposite one another. The internal combustion engine includes a cross-plane crankshaft and has a firing order of a 90° crank angle from cylinder to cylinder. An intake camshaft and an exhaust camshaft are associated with each cylinder bank for actuating at least one intake gas exchange valve and one exhaust gas exchange valve for each cylinder. The gas exchange intake valves that are actuated at a 90° crank angle in the same cylinder bank have a larger valve stroke than the gas exchange intake valves in same cylinder bank actuated immediately prior thereto. The gas exchange intake valves in the same cylinder bank actuated immediately prior thereto have a smaller valve stroke than all the remaining gas exchange intake valves of both cylinder banks.
    Type: Application
    Filed: May 2, 2012
    Publication date: August 23, 2012
    Applicant: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Wolfram KIRCHWEGER, Ralf Kadura