A hydraulic bushing assembly comprises an inner tube, a travel limiter surrounding the inner tube, a first intermediate insert, a second intermediate insert spaced apart from the first intermediate insert, and an elastomeric bushing disposed around the inner tube and encapsulating the first intermediate insert and the second intermediate insert. The elastomeric bushing at least partially encapsulates the travel limiter such that a portion of the elastomeric bushing is positioned between the travel limiter and the inner tube. First and second snubbers limit displacement of the travel limiter and define first and second fluid chamber within the elastomeric bushing. A fluid passageway defined by the elastomeric bushing and an outer tube extends between the first and second fluid chambers, wherein relative movement between the inner tube and the outer tube causes fluid transfer between the first fluid chamber and the second fluid chamber.

A hydraulic mount for a vehicle is configured to control and damp the behavior of a motor mounted on a vehicle body. The hydraulic mount includes: an inner pipe; a main rubber molded on an outer circumferential surface of the inner pipe and having an upper front liquid chamber and an upper rear liquid chamber, and a lower front liquid chamber and a lower rear liquid chamber; and an outer pipe fitted to an outer circumferential surface of the main rubber to seal the liquid chambers, wherein the main rubber includes a first flow path connecting the upper front liquid chamber and the lower rear liquid chamber filled with fluid such that the fluid is movable therebetween; and a second flow path connecting the upper rear liquid chamber and the lower front liquid chamber filled with fluid such that the fluid is movable therebetween

A bush-type hydraulic mount used for mounting a motor module in an electric vehicle is provided. The bush-type hydraulic mount includes an inner pipe, a middle pipe disposed coaxially with the inner pipe, and a main rubber that is vulcanized between the inner pipe and the middle pipe. An outer pipe surrounds the middle pipe. The main rubber includes a front fluid chamber that is recessed from a surface of the main rubber, a rear fluid chamber adjacent to the front fluid chamber and recessed from the surface of the main rubber, and a bridge that separates the front fluid chamber and the rear fluid chamber to allow fluid to flow between the front fluid chamber and the rear fluid chamber and being deformable by external force.

The device includes solid force transmission elements including two reinforcements, a damping body, a damping space including a damping chamber, the device being normally in a filling state where the damping space is filled with a damping liquid and may accidentally be in a state of loss of filling, which has an integrated element, specific and proprietary, palliative for the loss of filling, inactive in the state of filling and made active in the state of loss of filling where they bring the hydroelastic device to a state of stiffness of a high level, such element including a locking system including a locking part, integrally rigid, and a deformable load part controlled by the state of the device with respect to filling.

A mount bush includes a tube member, a shaft member disposed coaxially with an axis of the tube member and having a coil, a first liquid chamber disposed at an upper side in an internal space between the tube member and the shaft member, a second liquid chamber in communication with a lower side of the first liquid chamber and containing a magnetic viscoelastic fluid, and a third liquid chamber in communication with a lower side of the second liquid chamber and having a porous body, wherein the coil is disposed such that a magnetic path that passes through the second liquid chamber in an orientation along at least one of an axial direction and a radial direction is formed through electrical conduction.

Technologies are described for devices to absorb vibration. The devices may comprise an inertia track housing, an inertia track fluid reservoir, and an inertia track body. The inertia track fluid reservoir and the inertia track body may be within the inertia track housing. Walls of the inertia track body may define a first and a second spiral inertia track. The first and second spiral inertia tracks may be spiral channels within the outer surface of the inertia track body. The first spiral inertia track may connect a first fluid reservoir with the inertia track fluid reservoir. The second spiral inertia track may connect a second fluid reservoir with the inertia track fluid reservoir. The first and second spiral inertia tracks may be configured to channel the flow of a fluid along the first spiral inertia track and the second spiral inertia track and interact with the fluid to absorb vibration.

Disclosed is an engine mount for a vehicle including a membrane, which is an essential component of an engine mount for supporting a powertrain of the vehicle. The membrane may be deformed vertically and radially depending on an input amplitude so as to open or close bypass holes in upper and lower plates depending on the input amplitude. As such, it is possible to easily fulfill a function of isolating vibrations generated by the powertrain during idling and a damping function of controlling the behavior of the powertrain during traveling and it is possible to prevent the generation of abnormal noise attributable to cavitation and rattling phenomena.

A powertrain component mount includes a housing, a main rubber element, a hydraulic body, a membrane and a valve. The main rubber element has an outer armature, an inner armature and an isolating element coupled to the armatures, the isolating element being formed of a material that is more flexible than the outer armature and the inner armature, wherein the main rubber element defines at least part of a fluid flow path. The hydraulic body supports the outer armature of the main rubber element, defines part of the fluid flow path, a fluid chamber, and part of a control chamber communicated with the fluid flow path. The hydraulic body has a port open to the control chamber. The membrane defines part of the control chamber and the valve has a valve head movable between a first position closing the port and a second position spaced from the port.

A system and method using a mount assembly for attaching a powertrain to a structural member of a vehicle. The mount assembly includes a first compliant member, a second compliant member, a first fluid chamber, a second fluid chamber, a pressure compliant membrane, electro-magnetorheological switch and a magnetorheological fluid. A fluid conduit interconnects the first fluid chamber with the second fluid chamber to allow a fluid to pass from the first fluid chamber to the second fluid chamber. The pressure compliant membrane seals the aperture in the second fluid chamber. The electro-magnetorheological switch is activated to generate an electric field in the fluid conduit to change the viscosity of the magnetorheological fluid to achieve a first stiffness profile of the mount assembly. The electro-magnetorheological switch is deactivated to remove the electric field in the fluid conduit to change the viscosity of the magnetorheological fluid to achieve a second stiffness profile of the mount assembly.

A hydraulic mount is provided and includes: an inner core, a cage that surrounds the inner core, an elastomer body that extends between the inner core and the cage and elastically connects them to each other, and an outer sleeve that encloses the cage. The elastomer body has a first circumferential fluid chamber recess and a second circumferential fluid chamber recess. The first fluid chamber recess and the second fluid chamber recess are each limited in a radially outwards direction by the outer sleeve to form a first fluid chamber and a second fluid chamber. The elastomer body is configured to be substantially undercut-free in an axial direction on its axial end faces. The elastomer body and the cage are configured to be substantially undercut-free in the region of the first fluid chamber recess and the second fluid chamber recess, at least in two predetermined, mutually opposite radial directions.