Patents by Inventor Arno Wunderlich

Arno Wunderlich 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).

  • Method and apparatus for monitoring an electromagnetic hydraulic valve for a variable valve timing system
    Patent number: 9207146
    Abstract: A method monitors an electromagnetic hydraulic valve for controlling a hydraulically adjustable valve gear of a reciprocating piston engine. The hydraulic valve includes an electromagnetic coil and a moving armature configured to connect a control port hydraulically to a high-pressure port or a low-pressure port, depending on an energization of the coil. The method includes detecting a movement of the armature, using a control unit, in response to an energization of the coil based on a mutual induction in the coil and identifying a defect, using the control unit, if the expected mutual induction does not occur.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: December 8, 2015
    Assignee: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT
    Inventors: Thomas Melzig, Stephan Pelters, Arno Wunderlich, Lutz Kretzschmar
  • METHOD AND APPARATUS FOR MONITORING AN ELECTROMAGNETIC HYDRAULIC VALVE FOR A VARIABLE VALVE TIMING SYSTEM
    Publication number: 20150057879
    Abstract: A method monitors an electromagnetic hydraulic valve for controlling a hydraulically adjustable valve gear of a reciprocating piston engine. The hydraulic valve includes an electromagnetic coil and a moving armature configured to connect a control port hydraulically to a high-pressure port or a low-pressure port, depending on an energization of the coil. The method includes detecting a movement of the armature, using a control unit, in response to an energization of the coil based on a mutual induction in the coil and identifying a defect, using the control unit, if the expected mutual induction does not occur.
    Type: Application
    Filed: August 13, 2014
    Publication date: February 26, 2015
    Inventors: Thomas Melzig, Stephan Pelters, Arno Wunderlich, Lutz Kretzschmar
  • Method for Operating a Fuel Pump
    Publication number: 20080216799
    Abstract: In a method for operating a fuel pump of a motor vehicle, the fuel pump is driven by an electric motor in such a way that the fuel pump is driven by an energized electric motor in a defined rotational direction in order to feed fuel in the direction of an internal combustion engine. Accordingly, if it is detected that the fuel pump is blocked, the rotational direction of the fuel pump is changed at least once for a specific time period.
    Type: Application
    Filed: March 4, 2008
    Publication date: September 11, 2008
    Applicant: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT
    Inventor: Arno Wunderlich
  • Method for Operating a Fuel Pump
    Publication number: 20080218105
    Abstract: In a method for operating a fuel pump of a motor vehicle, the fuel pump is driven by an EC electric motor for conveying fuel in a direction of an internal combustion engine. Accordingly, when no more fuel is required, the EC electric motor of the fuel pump is switched off in such a way that a rotor of the EC electric motor slows down in a defined manner, so that the rotor of the EC electric motor assumes a defined relative position with respect to the stator of the EC electric motor after slowing down.
    Type: Application
    Filed: March 7, 2008
    Publication date: September 11, 2008
    Applicant: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT
    Inventor: Arno Wunderlich