Zf Friedrichshafen Ag

Deutsches Zentrum Fuer Luft-und Raumfahrt E.v

Peter Binner

Bernhard Hoffschmidt

Heinrich Meyer

Manfred Boehmer

Marc Stira

A hydraulic engine bearing for motor vehicles has a fluid-filled working chamber () surrounded by a rubber-elastic circumferential wall (). A compensating chamber () is provided which is in connection with the working chamber () via an overflow duct () in a baffle plate () between the working chamber () and the compensating chamber (). Another compensating chamber () is connected to the working chamber () via a bypass duct (). The additional compensating chamber () is formed from an elastic bellows (), which is surrounded on its outside by a fixed wall () and wherein an intermediate space () is arranged between the bellows () and the wall (). The intermediate space can be filled with a compressible medium, preferably air, and the medium can be emptied by means of a switching device, wherein the switching device is formed from at least one non-return valve () and at least one on-off valve (). The non-return valve () is arranged in a vent duct as a connection path of the intermediate space () to the outside of the fixed wall () such that only a flow of the medium present in the intermediate space () to the outside of the wall () is possible. The on-off valve () is arranged at a vent duct () as an additional connection path of the intermediate space () to the outside of the engine bearing and can close or open the vent duct ().

Hydraulic engine bearing

A trough-type parabolic concentrator (1) for a solar thermal power plant comprises a reflector plate (3) bent in trough shape and a support structure (4) for supporting the reflector plate (3) and comprising a plurality of wooden segments (2) arranged in a row in the longitudinal direction of the trough. Each segment (2) is assembled from a plurality of wooden frames (5). Using wooden frames (5) as the basic element of the supporting structure (4) allows for a lightweight, simple and low-cost structure of the trough-type parabolic concentrator (1).

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Bonn, Germany

Peter Binner