Daimler-benz Ag

Mercedes-benz Aktiengesellschaft

Karl Kirschenhofer

Paul Schwerdt

Dieter Dorrie

A device works according to the displacement principle, i.e., at least two displacers are provided in a common displacer working chamber or in displacer working chambers communicating with one another, and are drivingly coupled together by a pressure transmission medium. Elastomer material is disposed as the pressure transmission medium, at least in the region of one displacer.

Device for stepping up or transmitting forces and strokes

A piezoelectric control valve, for motor fuel injection via an injection valve, includes a hydraulic play-compensation element inside the control valve on the one side, which automatically compensates for possible changes in length of the reference system as a result of piezoceramic setting actions in the piezoelectric actuator so that, at the same working stroke of the piezoelectric actuator, an identical stroke at the valve is also always ensured. A hydraulic stroke transmission inside the control valve on the other side, provide a valve stroke corresponding to a multiple of the working stroke.

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Ulm, Germany

Karl Kirschenhofer