Patent ID: 8042792
Filing Date: 2011-10-25
Classification: F16F

Abstract:
1. A hydraulic engine bearing for motor vehicles, the hydraulic engine bearing comprising: a fluid-filled working chamber at least partially surrounded by a rubber-elastic circumferential wall; a compensating chamber formed from an elastic bellows portion; an overflow duct in a baffle plate between the working chamber and the compensating chamber, said compensating chamber being in connection with the working chamber via said overflow duct; a bypass duct; another compensating chamber connected to said working chamber via said bypass duct, said another compensating chamber being formed from another elastic bellows portion, which is surrounded by a fixed wall on an outside and an intermediate space is arranged between the another bellows portion and the wall, said intermediate space being filled with a compressible medium; a switching device for emptying said medium from said another compensating chamber, said switching device comprising a non-return valve and an on-off valve, wherein said non-return valve is arranged in a vent duct as a connection path of said intermediate space to outside of said fixed wall such that only flow of the compressible medium present in said intermediate space to the outside of said wall is possible, and wherein said on-off valve is arranged at another vent duct as an additional connection path of said intermediate space to the outside of the engine bearing, said on-off valve for closing and opening said another vent duct.