Patents by Inventor Axel Kiefer

Axel Kiefer 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 device for controlling variable gas exchange valve in an internal combustion engine
    Patent number: 7418930
    Abstract: A device for controlling variable gas exchange valves of an internal combustion engine is provided, in which an actuator control operates gas exchange valves by controlling valve actuators while taking into consideration supplied state variables and control specifications. Before the actuator control is cleared to operate the gas exchange valves, a collision protection device checks at least whether controlling the valve actuators using the supplied control specifications would lead to a collision of a gas exchange valve with an additional gas exchange valve. In response to a detected possible collision, the collision protection device initiates at least one measure that prevents a possible collision.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: September 2, 2008
    Assignee: Robert Bosch GmbH
    Inventors: Hermann Gaessler, Juergen Schiemann, Niraimathi Appavu Mariappan, Axel Kiefer
  • Method and device for controlling variable gas exchange valve in an internal combustion engine
    Publication number: 20060157009
    Abstract: A device for controlling variable gas exchange valves of an internal combustion engine is provided, in which an actuator control operates gas exchange valves by controlling valve actuators while taking into consideration supplied state variables and control specifications. Before the actuator control is cleared to operate the gas exchange valves, a collision protection device checks at least whether controlling the valve actuators using the supplied control specifications would lead to a collision of a gas exchange valve with an additional gas exchange valve. In response to a detected possible collision, the collision protection device initiates at least one measure that prevents a possible collision.
    Type: Application
    Filed: December 15, 2005
    Publication date: July 20, 2006
    Inventors: Hermann Gaessler, Juergen Schiemann, Niraimathi Mariappan, Axel Kiefer