Patents by Inventor Hans Jorg Lehmann

Hans Jorg Lehmann 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 for the load-controlling operation of electromagnetically activated intake valves of an internal combustion engine
    Patent number: 6453856
    Abstract: In order to be able to implement low loads at high rotational speeds in an internal combustion engine with electromagnetically activated intake valves, one intake valve of a cylinder is operated in the free flying phase, i.e. not held in the open position, and the other intake valve of the cylinder is correspondingly opened for a longer time. Alternatively, the first valve can also be held closed.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: September 24, 2002
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hans Jörg Lehmann, Claus Rose, Thomas Vogt
  • METHOD FOR THE LOAD-CONTROLLING OPERATION OF ELECTROMAGNETICALLY ACTIVATED INTAKE VALVES OF AN INTERNAL COMBUSTION ENGINE
    Publication number: 20020092486
    Abstract: In order to be able to implement low loads at high rotational speeds in an internal combustion engine with electromagnetically activated intake valves, one intake valve of a cylinder is operated in the free flying phase, i.e. not held in the open position, and the other intake valve of the cylinder is correspondingly opened for a longer time. Alternatively, the first valve can also be held closed.
    Type: Application
    Filed: December 10, 2001
    Publication date: July 18, 2002
    Inventors: Hans Jorg Lehmann, Claus Rose, Thomas Vogt