Abstract: 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.

Abstract: A vibration damping device (1, 10, 100) includes a tubular metal bracket (20, 120), a first attachment member (12, 112), a second attachment member (11, 23, 111), an elastic body (13, 113), a partition member (17, 117), and a diaphragm (19, 119). A fixed portion (11g, 23c, 111c) fixed to a fixing portion (20b, 120b) of the metal bracket is formed in the second attachment member. A gap (S2, S21) is provided between a portion of an outer circumferential surface of the second attachment member except for the fixed portion, and a portion of an inner circumferential surface of the metal bracket except for the fixing portion, and a second seal portion (22, 123) is provided between the fixed portion and the fixing portion.

Abstract: A fluid-filled vibration damping device including an inner member, an outer member having a tubular part whose radially inner surface has a quadrangular tube shape, a main rubber elastic body elastically connecting the two members, and a partition having a quadrangular plate shape disposed on a radially inner side of the tubular part. An outer peripheral surface of an axial end of the main rubber elastic body is anchored to the radially inner surface of the tubular part. An annular sealing rubber pressed against an outer peripheral edge of an axial end face of the partition is provided to the axial end of the main rubber elastic body. An axis-perpendicular inside dimension and a width dimension of the sealing rubber are made larger in a diagonal direction of the radially inner surface of the tubular part than in an opposite side direction thereof.

Abstract: A motor mount assembly is provided for coupling a propeller motor to a body of an unmanned aerial vehicle (UAV). The motor mount assembly includes a floating portion and acts to attenuate frequencies of vibration from the propeller motor during operation, which modifies the corresponding noise that is produced and reduces stresses on the various components. The floating portion is surrounded on all sides by isolation portions (e.g., made of elastomers or other materials) that are held within a casing that attaches to the body of the UAV. In one implementation, the motor mount assembly is modular such that one or more of the isolation portions may be replaced with different isolation portions (e.g., having different attenuation properties), depending on the direction and nature of the vibrations from the propeller motor that are to be attenuated for a particular application.

Abstract: A fluid-filled vibration-damping device including: two elastically-connected attachment members; two liquid chambers divided by a partitioner having a storing space; an elastic mover disposed in the storing space and having a support supported by the partitioner; a positioner provided on at least one of radial inside and outside of the support, partially in a peripheral direction of the support, in abutment against a peripheral wall face of the storing space; a valve separate from the positioner in the peripheral direction, and the peripheral wall face in opposition; an axially-thin part connecting the positioner and the valve to the support in a displaceable manner; a communication passage connecting the liquid chambers formed between the peripheral wall face and the valve; and a switch configured to obstruct the communication passage by abutment of the valve against the peripheral wall face.

Abstract: A restricted passageway (24) is provided with a first communication part (26) which is formed in a first barrier wall (34) facing a first liquid chamber and opens to the first liquid chamber, a second communication part (27) which is formed in a second barrier wall (35) facing a second liquid chamber and opens to the second liquid chamber, and a main body flow path (25) that is configured to cause the first communication part (26) and the second communication part (27) to communicate with each other. At least one of the first communication part (26) and the second communication part (27) includes a plurality of fine holes (26a) that pass through the first barrier wall (34) or the second barrier wall (35).

Abstract: A switchable hydraulic mount includes a first fluid chamber delimited by a spring body, a second fluid chamber fluidically connected to the first fluid chamber, a decoupling element for decoupling the chambers, and arranged between the first fluid chamber and a decoupling chamber, the chambers being fluidically separated from one another, and a switchable valve to selectively open or close the decoupling chamber with respect to the environment, the switchable valve including a valve housing with a linear actuator including an actuator head displaceable in the valve housing between closed and open positions, the valve housing including at least one valve opening which, in the open position, connects the decoupling chamber to the environment and which, in the closed position, is closed by the actuator head, and the valve opening including at least a component of extension transverse with respect to the movement axis of the actuator head.

Abstract: An engine mount for a vehicle is provided which attenuates vibration generated when an engine of the vehicle operates. The engine mount includes a main rubber body which supports a core and an inner casing which fixes the main rubber body to a housing. A nozzle plate is mounted in the inner casing and an upper membrane and a lower membrane are attached thereto. The nozzle plate includes a lower plate and an upper plate that is inserted and coupled into the lower plate. The upper membrane is attached to a top plate of the upper plate and the lower membrane is attached to a bottom plate of the lower plate.

Abstract: A tunable hydraulic vibration damping mount comprises a universal outer housing, inner sleeve, main spring assembly, bottom compliance assembly, and inner bushing. Each of a plurality of flow channel members comprises a cylinder having a common inner diameter, a common outer diameter, and a helical track having a cross-sectional area and a length defining a volume of the helical track. The helical track of each flow channel member defines a different volume. A selected flow channel member is positioned between the inner bushing and the outer housing and between the main spring assembly and the bottom compliance assembly. The selected flow channel member provides a selected dynamic performance of the damping mount.

Abstract: An engine mount which connects an engine to a vehicle body is provided. The engine mount includes a housing which defines a body of the engine mount and a main rubber body that is installed within the housing and defines a space portion that accommodates a fluid that flows through a nozzle plate. A core is inserted into and fixed to the main rubber body and an a fixing bolt is coupled to the core. A lower support bracket is coupled to the vehicle body and the fixing bolt is inserted therein. A damper that attenuates vibration is disposed at a lower side of the core or at first and second ends of the lower support bracket of the of the engine mount.

Abstract: The present disclosure provides an engine mount for a vehicle. The engine mount includes a rubber assembly that is connected between a vehicle body and an engine. A fluid sealing assembly is detachably assembled to the rubber assembly, allowing tuning of the engine mount to be performed by detaching the fluid sealing assembly while the engine remains connected to the engine mount.

Abstract: A hydraulic engine mount is provided in which related components out of two or more internal parts are coupled to reduce the number of components and to prevent oil leakage occurring due to coupling of the parts. The hydraulic engine mount includes a core that has a central bolt inserted into a central portion thereof, a rubber member formed on an outer circumferential surface of the core, upper and lower fluid chambers to seal a fluid therein. A diaphragm is disposed at a lower end of the lower fluid chamber and an orifice assembly divides the upper and lower fluid chambers from each other and has nozzle upper and lower plates. A nozzle upper plate-combined case that has a flow path is formed integrally with a lower part of the rubber member, and a lower part of the flow path is hermetically sealed by the nozzle lower plate.

Abstract: A method of manufacturing a fuel cell stack includes compressing a stack of bipolar plates with a variable applied load a feature non-deformed displacement distance, which is measured from an initial height of the stack of bipolar plates. A first applied load at a first displacement distance and a second applied load at a second displacement distance are sensed. The first displacement distance and the second displacement distance are each less than the feature non-deformed displacement distance. A best fit curve, passing through the first applied load at the first displacement distance and the second applied load at the second displacement distance, is then determined. A final displacement distance, measured from the initial height, is calculated from the best fit curve for a target applied load. The stack of bipolar plates is then compressed to the final displacement distance measured from the initial height.

Abstract: Scroll compressor designs are provided to minimize vibration, sound, and noise transmission. The scroll compressor has a bearing housing, and orbiting and non-orbiting scroll members. The non-orbiting scroll member has a radially extending flanged portion with at least one aperture substantially aligned with the axially extending bore. At least one fastener is disposed within the aperture and the bore. A sound isolation member contacts at least one of the non-orbiting scroll member, the fastener, or the bearing housing, to reduce or eliminate noise transmission. The sound isolation member may be formed of a polymeric composite having an acoustic impedance value greater than the surrounding materials. The sound isolation member may be an annular washer, an O-ring, or a biasing member, by way of non-limiting example. In other variations, fluid passages are provided within the fastener and/or bearing housing to facilitate entry of lubricant oil to further dampen sound and noise.

Abstract: A mounting structure for mounting a dynamic damper on a vehicle body frame of a vehicle includes a dynamic damper mounted on a vehicle body frame of a vehicle includes a dynamic damper bracket connecting the dynamic damper to the vehicle frame; a collar member rigidly fixed to the vehicle body frame; a mounting bracket which is mounted above the vehicle body frame, and which is elastically connected to the collar member; and a fixing member which fixes the dynamic damper bracket and the collar member to the vehicle body frame.

Abstract: A bearing system, for bearing a motor vehicle assembly at a motor vehicle body, with a fluid operating chamber that is in flow connection, by way of at least one fluid channel, with a fluid equilibration chamber, which is present in a housing of the bearing system. The fluid operating chamber and the fluid equilibration chamber are separated by a separating element, in which the at least one fluid channel is present. The separating element is decoupled from the housing by an elastic element, which surrounds the separating element in the peripheral direction. The housing has a cover, which accommodates the fluid equilibration chamber, and a supporting part, which holds a spring element of the bearing system.

Abstract: A strut mount including: a first mounting member configured to be attached to a shock absorber; a second mounting member configured to be attached to a vehicle body; a main rubber elastic body elastically connecting the first and second mounting members to each other; a fluid-filled zone whose interior is filled with a non-compressible fluid such that a vibration damping effect is obtained based on a flow action of the fluid; and an orifice passage through which the fluid filled in the fluid-filled zone is induced to flow. A tuning frequency of the orifice passage is set to a frequency of a vibration transmitted during lockup of an automobile from a drive train of the automobile to the vehicle body via the shock absorber.

Abstract: An anti-vibration device includes: a cylinder body coupled to a vibration receiver; a support body coupled to a vibration source; an elastic body that attaches the support body to the cylinder body such that the support body is capable of moving relative to the cylinder body; a first liquid chamber sectioned by an orifice pathway and the elastic body; a second liquid chamber that a liquid flows to and from the first liquid chamber through the orifice pathway; a first gas chamber with a wall configured by a diaphragm; a second gas chamber capable of communicating with the first gas chamber; and a switching section that switches a state of communication of the first gas chamber and the second gas chamber.

Abstract: An anti-vibration device (1) includes a tubular first attachment member (10), a second attachment member (20), an elastic body (70), and a separating member (50) that separates a liquid chamber in the first attachment member into a main liquid chamber (80) and a secondary liquid chamber (90). A membrane is held by the separating member, and the membrane and a diaphragm are formed integrally.

Abstract: The present invention is a liquid-tight the vibration-damping device (10). In this vibration-damping device (10), a limiting passage (24) includes a main body passage (25) disposed inside a partition member (16), a first communication section (26) configured to communicate the main body passage (25) and a first liquid chamber (14), and a second communication section (27) configured to communicate the main body passage (25) with a second liquid chamber (12). At least one of the first communication section (26) and the second communication section (27) includes openings (31).

Abstract: A vehicle includes an electric machine, an engine, an engine mount, and a controller. The engine has a base speed that corresponds to a speed of the electric machine and an engine power demand. The engine mount is disposed between the engine and a vehicle structure such as a frame or unibody. The controller is configured to, in response to compression of the engine mount, increase an engine speed to a value that is greater than the base speed to reduce engine lugging.

Abstract: A hydraulic mount for a vehicle includes: a core bush coupled to a bolt; a main rubber formed on an outer surface of the core bush; an orifice portion coupled to a lower portion of the main rubber to divide an upper fluid chamber and a lower fluid chamber; and a lower rubber film coupled to a lower portion of the orifice portion. The orifice portion includes an upper nozzle plate formed with a first fluid inlet and outlet port, a lower nozzle plate formed with a fluid path and a second fluid inlet and outlet port, and a cylinder-type membrane vertically arranged between the upper nozzle plate and the lower nozzle plate, and a pattern of crests and valleys is formed along a circumference of the membrane, the pattern of crests and valleys selectively contacting the upper nozzle plate and the lower nozzle plate.

Abstract: A mounting device, in particular to the mounting of an internal combustion engine on a chassis of a motor vehicle, which is provided with a fluid working chamber that is fluidically connected via at least one fluid channel to a fluid equalization chamber via at least one fluid channel in a housing. At the same time, a fluid damping chamber is provided, which is separated by an elastic membrane from the fluid working chamber and which is connected with fluidic connection via a throttling channel to an outer environment of the mounting device. The throttling channel is formed by a replaceable throttling element separately from the housing.

Abstract: An electromagnetic actuator including: an outer housing member wherein outer peripheral edges of lid members are fixed respectively to opposite axial sides of the outer tubular member; an inner axial member elastically-connected to the outer housing member by plate springs at opposite axial sides thereof such that central portions of the plate springs are attached to the inner axial member, while outer peripheral edges of the plate springs are clamped and fixed between the outer tubular member and the respective lid members; a stator and a mover having electromagnetic oscillation force between them securely-assembled to the outer housing member and the inner axial member; and integrally-formed seal rubber and stopper rubber provided at inner faces of the lid members to seal a fixation part to the outer tubular member and to cushion strike of the inner axial member against the lid members, respectively.

Abstract: A fluid-filled vibration damping device including: an inner mounting member; an outer bracket formed by molding; a main rubber elastic body elastically connecting the inner mounting member and the outer bracket with each other; a fluid chamber for which a portion of a wall is constituted by the main rubber elastic body with a non-compressible fluid sealed therein; a caulking member whose material is different from a material of the outer bracket, the caulking member being fixed to the outer bracket in a projecting state; and a lid member constituting an other portion of the wall of the fluid chamber, the lid member being attached to the outer bracket by being fastened through caulking using the caulking member.

Abstract: An engine mount apparatus may include a mount housing which has an internal space; a partition device which partitions the internal space into an upper space and a lower space; a nozzle plate which is provided in the upper space and allows a fluid to selectively pass through the nozzle plate; an upper diaphragm which is fastened to an upper surface of the nozzle plate and defines an upper liquid chamber; a core which penetrates the partition device, and has an upper portion disposed in the upper space, and a lower portion disposed in the lower space; a lower diaphragm which extends from the upper portion of the core to a lower surface of the nozzle plate, and defines a lower liquid chamber; and a rubber member which is provided in the upper space, and connects the upper portion of the core and the partition device.

Abstract: An antivibration device capable of restraining a stopper rubber from being turned up when a connecting member is inserted between a first attached member and a displacement restriction member. A stopper rubber is mounted on a surface of a connecting member opposite to a first attached member and includes a mounted portion brought into abutment on a displacement restriction member when the connecting member is displaced in a rebound direction, and a hook portion formed at the outer edge of the mounted portion. The connecting member includes an engaged portion (protrusion) engaged with the hook portion. Thus, when the connecting member is inserted between the first attached member and the displacement restriction member, the stopper rubber (the mounted portion) can be restrained from being turned up.

Abstract: The present disclosure provides a rubber bearing for connecting a vehicle component, in particular an axle tie rod to a vehicle chassis. The rubber bearing includes an inside part, an outside part, and an elastomer arranged between the inside part and the outside part and connecting the inside part and the outside part. The rubber bearing also includes a releasable axial stop limiting axial displacement of the inside part and of the outside part in a mounting position, wherein the releasable axial stop, in the mounting position, is at least one of in catch engagement with the inside part and clamped with the inside part.

Abstract: Disclosed is an engine mount which includes a core installed in a case and supporting a load of an engine, an insulator mounted on the core and elastically deformed according to a load applied to the core, a diaphragm installed at a lower portion of the case, and an orifice assembly that divides a fluid-filled space between the insulator and the diaphragm into an upper liquid chamber and a lower liquid chamber and has at least one orifice for inducing a flow of fluid between the upper and lower liquid chambers, wherein the engine mount further includes a rubber membrane mounted between the orifice assembly and the insulator so as to be in close contact with a lower surface of the insulator, and wherein the orifice assembly includes a fluid transfer member for forcibly transferring a fluid, and operates according to driving conditions of a vehicle and selectively moves the fluid to the upper liquid chamber or the lower liquid chamber to regulate the liquid amount of the upper liquid chamber and the lower liqui

Abstract: The present invention provides an adaptive vibration isolator. The adaptive vibration isolator includes a hydraulic system, a first elastic member, a second elastic member, an upper top plate, and a vibration energy consumption device. The hydraulic system comprises a hydraulic cylinder, a piston and a piston rod, a first though hole is formed on the piston, and the first hydraulic chamber is communicated with the second hydraulic chamber via the first through hole. An upper top plate passes through the piston rod and the piston from the transmission portion and is connected to the vibration energy consumption device to drive the vibration energy consumption device to move relative to the piston and adjust the effective aperture of the first through hole.

Abstract: A vibration-damping device comprising: first and second attachment members connected elastically by a main rubber elastic body; an inner bracket fixed to the first attachment member with its basal end superposed on an outside end face of the first attachment member while extending laterally relative to the first attachment member; a bag-shaped stopper rubber mounted covering the basal end of the inner bracket in a non-adhesive way; a through hole formed in the stopper rubber so that the first attachment member inserted through it and the inner bracket are mutually fixed; and an elastic contact part provided at a rim of the through hole and pressed against an outer peripheral face of the first attachment member from a distal end side of the inner bracket so that the stopper rubber is positioned relative to the inner bracket in extension direction of the inner bracket.

Abstract: A suspension mount assembly for coupling a first component and a second component of a vehicle comprises a housing including a bore and a first shoulder. The housing is adapted to be coupled to the first component of the vehicle. An elastomeric bushing includes a bore adapted to receive the second component of a vehicle. The elastomeric bushing includes a first portion, a spaced apart ring portion, and a web portion interconnecting the ring portion of the first portion. The ring portion, the web portion and the first portion are integrally formed with one another. A cap includes a peripheral portion having a second shoulder. The elastomeric bushing is positioned within the housing bore with the ring portion being engaged with the first shoulder. The first shoulder cooperates with the second shoulder to trap the ring portion between the housing and the cap and provide a seal and vibration isolator therebetween.

Abstract: A semi-active engine mount for a vehicle is provided to improve the NVH performance and ride quality. An engine mount for a vehicle includes a rubber module with a rubber having a core therein, and a case that surrounds an exterior circumference of the rubber and a fluid module with a module case coupled to the rubber module to define an upper and lower chamber and having straight and a bypass flow paths, a closure configured to open or close the straight flow path, and a diaphragm installed on the module case to close the lower chamber. A coil module has a coil embedded in the fluid module and configured to open and close the closure when a power source is turned on or off. In particular, a high loss factor when the vehicle travels is reduced, and decreasing dynamic characteristics when the vehicle idles is decreased.

Abstract: A hydraulic mount for a vehicle shock absorber includes a first housing portion, a second housing portion, an orifice plate and a diaphragm connected together to define a first chamber and a second chamber in the hydraulic mount. A first resilient member disposed on the orifice plate defines a first sub-chamber in the first chamber and a second resilient member disposed on the orifice plate defines a second sub-chamber in the second chamber.

Abstract: A hydromount for mounting a motor vehicle engine includes a load-bearing spring having an elastomeric material and being configured to support a mount core. A working chamber is delimited by the load-bearing spring. An equalization chamber is separated by an intermediate plate from the working chamber and delimited by an equalization membrane having an elastomeric material. The working chamber and the equalization chamber are filled with a hydraulic liquid and connected to each other by a damping channel. The intermediate plate is mounted in an elastic receiving device which grasps around the intermediate plate and has a pivotable supporting region.

Abstract: A bracket has a cylindrical part which opens in the Y direction. An inner member is arranged within the cylindrical part and faces in the Y direction. An elastic body connects the inner member and the cylindrical part and includes a pair of X direction elastic parts, a projecting part, and a Y-direction elastic part. The X direction elastic parts connect the inner member and the cylindrical part in an X direction. The projecting part is provided in an end in the Y direction of the cylindrical part. The Y direction elastic part is connected to a Y direction supporting part of a bottom wall. The projecting part partially overlaps with the Y direction supporting part of the inner member in the Y direction. No part projects outwardly of the cylindrical part and interferes with the vehicle body or surrounding members, increasing a degree of freedom in layout.

Abstract: A protrusion (54) acting as an engagement portion is provided to a root (52) of a spindle (5) to an engine. An extending portion (45) extending above the root (52) of the spindle (5) is provided to a stopper (4). An opening (46) acting as a coupler is provided to the extending portion (45). The protrusion (54) and the opening (46) engage with each other, thereby reducing the risk of the spindle (5) coming off and regulating relative displacement of an upper rigid member (2) supporting the spindle (5) inserted into the upper rigid member (2).

Abstract: An antivibration device capable of securing a thickness dimension of a stopper rubber without changing a gap between a connecting member and a stopper wall portion. A connecting member includes a base surface and a receding surface located to recede beyond the base surface in a direction to go away from a stopper wall portion, the base surface and the receding surface face the stopper wall portion, and a stopper rubber includes an inner fitting portion at which the connecting member is internally fitted. Thus, it is possible to secure a thickness dimension of the stopper rubber without changing a gap between the connecting member and the stopper wall portion.

Abstract: An anti-vibration apparatus (10) includes a first attachment member (11) having a tubular shape and connected to one of a vibration generating section and a vibration receiving section and a second attachment member (12) connected to the other section, an elastic body (13) configured to connect the attachment members to each other, and a partition member (16) configured to partition a liquid chamber in the first attachment member (11) in which a liquid is sealed into a first liquid chamber (14) and a second liquid chamber (15). At least one of the first liquid chamber (14) and the second liquid chamber (15) has the elastic body (13) at a portion of a wall surface.

Abstract: A nozzle plate of an engine mount may include a lower nozzle plate, an upper nozzle plate, a membrane, and a stopper, in which a flow of the hydraulic liquid is allowed through a gap formed between the stopper and the membrane and a gap formed between the membrane and a seating portion of the lower nozzle plate when pressure of the hydraulic liquid applied to the membrane is relatively low, and a flow of the hydraulic liquid is blocked as the membrane comes into close contact with the stopper or the seating portion when pressure of the hydraulic liquid is relatively high.

Abstract: An engine mount is provided that includes a nozzle plate that is mounted between an insulator and a diaphragm to divide the interior into upper and lower fluid chambers to enable the flow of hydraulic fluid between the chambers through a first flow path formed in the nozzle plate according to variation in the volume of the interior. The nozzle plate includes a second flow path and a division cup that has an upwardly protruding portion to push the diaphragm to divide the lower fluid chamber into a main fluid chamber communicating with the flow path and an auxiliary fluid chamber communicating with the second flow path. A partition is formed inside the protruding portion to form a chamber below the auxiliary fluid chamber, and an introduction/discharge aperture is formed in the partition to enable introduction or discharge of air into or from the chamber.

Abstract: A vehicle powertrain mount includes a housing and first and second compliant members coupled to and cooperating with the housing. An inertia track assembly cooperates with the first compliant member to form a first fluid chamber and second fluid chamber with the second compliant member. The inertia track assembly includes at least first and second channels for conducting fluid between the first fluid chamber and the second fluid chamber. An air chamber in the inertia track assembly cooperates with a decoupler disposed therein. A switching apparatus is operatively connected to the housing and selectively positionable relative to the inertia track assembly. The switching apparatus includes an actuator with a plunger having a first portion positionable relative to the second channel and a second portion synchronously positionable relative to the air chamber.

Abstract: A vehicle vibration dampening mount assembly includes a housing, a resilient material, a sleeve and a solenoid. The resilient material has an outer portion attached to an interior surface of the housing and defines first and second chambers with a fluid passage extending therebetween. The sleeve is disposed within the housing and is attached to a central portion of the resilient material extending from a first end to a second end of the housing. The solenoid has a fixed portion mounted to the first end of the housing and a movable portion fixedly attached to the sleeve for movement therewith. The fixed portion has an electromagnetic coil arranged concentrically around the movable portion. The solenoid is configured to selectively move the moveable portion, the sleeve and the central portion of the resilient material in response to electrical current being provided to the electromagnetic coil.

Abstract: A vibration-damping device (10) includes a first attachment member (11), a second attachment member (12), an elastic body, and a partitioning member (16). A limiting passage (30) that allows a main liquid chamber (14) and an auxiliary liquid chamber (15) to communicate with each other is formed in the partitioning member (16). An inner peripheral surface of the limiting passage (30) is provided with a flow changing protrusion (31) that protrudes toward an inner side in a radial direction of the limiting passage (30) and that changes the flow of a liquid (L) that flows into the limiting passage (30) from the main liquid chamber (14) and flows through the limiting passage (30) in an axial direction of the limiting passage (30). In a vertical cross-sectional view passing through an axis of the limiting passage (30) and through the flow changing protrusion (31), the limiting passage (30) and the flow changing protrusion (31) have symmetrical shapes with respect to the axis.

Abstract: A vibration isolation device (10) of the present invention includes a tubular first attachment member (11) coupled to one of a vibration generating part and a vibration receiving part, and a second attachment member (12) coupled to the other thereof, an elastic body (13) which couples both the attachment members together, and a partition member (16) which partitions a liquid chamber within the first attachment member (11) having a liquid (L) enclosed therein into a first liquid chamber (14) and a second liquid chamber (15), in which at least one of the first liquid chamber (14) and the second liquid chamber (15) has the elastic body (13) as a portion of a wall surface thereof, the partition member (16) includes an intermediate chamber (43) which is disposed inside the partition member (16), a first communication passage (42a) which communicates with the intermediate chamber (43) and the first liquid chamber (14), and a second communication passage (42b) which communicates with the intermediate chamber (43) an

Abstract: A semi-active mount structure may include a nozzle plate mounted between an insulator and a diaphragm, to divide an interior of a main case into an upper fluid chamber and a lower fluid chamber, the nozzle plate being formed with first and second fluid passages, a plunger mounted in a housing coupled to a lower surface of the diaphragm such that the plunger is vertically movable, the plunger opening or closing the second fluid passage in accordance with application of electric power to a coil, a valve spring disposed between the plunger and the housing, to apply elastic force to the plunger, the valve spring dividing a space defined between the diaphragm and the coil into an upper space and a lower space, and a valve mounted at a vent hole drilled at one side of the housing for air to be introduced into or discharged from the lower space.

Abstract: A vibration damping device (10) includes a first attachment member (11) and a second attachment member (12), an elastic body (13) configured to couple the attachment members (11 and 12) to each other, and partition members (16) configured to partition a liquid chamber in the first attachment member (11) in which a liquid (L) is sealed into the first liquid chamber (14) and the second liquid chamber (15). A communicating passage (30) configured to communicate the first liquid chamber (14) with the second liquid chamber (15) is provided in the partition members (16). Flow-changing protrusions (31 and 32) protruding inward in a radial direction of the communicating passage (30) and configured to change a flow of the liquid flowing in the communicating passage (30) in an axial direction of the communicating passage (30) are provided in an inner circumferential surface of the communicating passage (30).

Abstract: The present disclosure is directed to a gas-lubricated bearing assembly for a gas turbine engine and method of damping same. The bearing assembly includes a bearing pad for supporting a rotary component and a bearing housing attached to or formed integrally with the bearing pad. The bearing housing includes a first fluid damper cavity, a second fluid damper cavity in restrictive flow communication with the first fluid damper cavity via a restrictive channel configured as a clearance gap, and a damper fluid configured within the first and second fluid damper cavities. More specifically, the damper fluid of the present disclosure is configured to withstand the high temperature environment of the engine. Thus, the bearing housing is configured to transfer the damper fluid from the first fluid damper cavity to the second fluid damper cavity via the restrictive channel in response to a force acting on the bearing pad.

Abstract: An axially damping elastomer bearing suitable for a motor vehicle, with a crucible-formed receptacle (13) for surrounding receiving an elastomeric support spring (15). The crucible-formed receptacle (13) is manufactured through casting and can be demolded in a demolding direction (39) and has a peripheral wall (19) with at least one drainage opening (33), wherein the at least one drainage opening (33) has a clearance (43, 45, 65) extending in the demolding direction (39).

Abstract: An engine mount structure capable of efficiently absorbing vibration input from an engine is provided. The engine mount structure includes a front mount device 20 which is connected to an engine 1 and a subframe 10 to suppress vibration transmission from the engine 1 side to the subframe 10 side. A dynamic damper 26 connected to the subframe 10 to suppress vibration of the subframe 10 is disposed in a hole portion 11b, and an opening of the hole portion 11b is formed in an upper surface portion 11a of a front subframe member component 11 located on a lower side of the front mount device 20.