Contitech Vibration Control Gmbh

Bernhard Uhrmeister

Peter Marienfeld

Robert Genderjahn

Hans-Juergen Karkosch

Hans-Jürgen Karkosch

The invention relates to a hydraulic bearing () comprising a bearing spring (), a working chamber () that is at least partially surrounded by the bearing spring () and that is filled with a hydraulic fluid, a first compensation chamber () and a first restrictor channel () for exchanging hydraulic fluid, said channel being formed between the working chamber () and the first compensation chamber (). The hydraulic bearing () has a controllable valve () for shutting-off or restricting the flow of hydraulic fluid through the first restrictor channel (). The invention also relates to a motor vehicle comprising a hydraulic bearing () of this type.

Hydraulic bearing and motor vehicle comprising a hydraulic bearing of this type

An actuator has an electrically conductive coil which has a longitudinal axis and windings through which a current can flow. The coil is surrounded by a highly permeable first ferromagnetic body so that the first body has projections of highly permeable ferromagnetic material above and below the coil in the longitudinal direction. The actuator has a magnet spaced apart from the coil so that a gap forms therebetween. The magnet is surrounded by a highly permeable second ferromagnetic body so that the second body has projections of highly permeable ferromagnetic material above and below the magnet in the longitudinal direction. The magnet is statically mounted with the second body and the coil is spring mounted with the first body so that the coil and first body oscillate in the longitudinal direction when an alternating current flows through the coil. The coil is outside the magnet perpendicular to the longitudinal axis.

Actuator for damping low-frequency oscillations

A hydraulic mount includes a closable bypass and a decoupling membrane. When the bypass is opened, however, the main effect that can be achieved by opening the bypass, namely the decrease in the spring rate at higher frequencies, is worsened. It is thus desirable to render the decoupling membrane ineffective when the bypass is open. The aim is achieved in that the closure device of the bypass includes blocking elements for blocking the decoupling membrane in the first switching position of the closure device when the bypass is open and can be released in the second position of the closure device when the bypass is closed.

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Hannover, Germany

Bernhard Uhrmeister