Patents by Inventor Gunter Hagemann

Gunter Hagemann 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: 4322948
    Abstract: An internal combustion engine comprises an exhaust driven turbocharger for generating a maximum boost pressure in the intake manifold, said pressure being so high that knocking may occur, to achieve maximum engine efficiency. A knock sensor detects engine detonation, and in response thereto causes actuation of a valve for temporarily reducing the boost pressure such that the knocking subsides.
    Type: Grant
    Filed: September 28, 1979
    Date of Patent: April 6, 1982
    Assignee: Volkswagenwerk Aktiengesellschaft
    Inventors: Klaus-Dieter Emmenthal, Gunter Hagemann