Zf Friedrichshafen Ag

Boge Elastmetall Gmbh

Marc Stira

Heinrich Meyer

Peter Binner

Stefan Worms

Karl-Ernst Poss

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 ().

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Bonn, Germany

Marc Stira