Patents by Inventor Hans Weitzenbuerger

Hans Weitzenbuerger 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).

  • Internal-combustion engine
    Patent number: 5209189
    Abstract: A reciprocating internal combustion engine whose thermally loaded components are cooled by a cooling liquid. The internal combustion engine has at least one cylinder with piston and a cylinder head associated therewith having an exhaust duct, as well as at least one liquid/air heat exchanger, which receives cooling-air from a cooling fan.The cooling fan (2) has a diffuser (3) and the liquid/air heat exchanger (1) is adapted to operate at an elevated cooling-air pressure of the cooling fan (2). The pressure of the cooling-liquid system and/or the composition of the cooling liquid are selected such that the boiling point of the cooling liquid lies between 110.degree. and 130.degree. C., preferably around 125.degree. C. The exhaust duct (5) in the cylinder head (4) is substantially thermally isolated from nearby regions of the cylinder head.
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: May 11, 1993
    Assignee: Kloeckner-Humboldt-Deutz AG
    Inventors: Hans Weitzenbuerger, Dieter Esche, Albert Nolte, Michael Klocke