Patents by Inventor Uwe Engels

Uwe Engels 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: 4009700
    Abstract: A control arrangement for effecting the reconveyance of exhaust gas over a larger engine operating range, while concurrently constructing the control to be more sensitive and better correlated with any particular thermal and/or mechanical operating condition of the internal combustion engine. The arrangement includes a multiple-position valve located in the conducting path of the control conduit, which is so located and constructed whereby the control pressure chamber of the control pressure chambers of the adjusting device are selectively subjected to a gas pressure and/or atmospheric pressure present in the intake conduit of the internal combustion engine upstream and/or downstream of the dosing arrangement for the combustion air or, respectively, the provided fuel-air mixture, or in the path of an accumulator associated with the control conduit.
    Type: Grant
    Filed: January 22, 1974
    Date of Patent: March 1, 1977
    Assignee: A. Pierburg Autogeratebau KG
    Inventors: Uwe Engels, Gunther Frohberg, Peter Klotzbach, Ernst Kuhlen, Helmut Rossel