A support rigidity of a torque rod with respect to a vehicle body is adequately increased. In addition to an upper bracket (52) and a lower bracket (54) for retaining the torque rod (66), the torque rod mounting structure includes a stay bracket (56) attached to the lower bracket (54) and the damper housing (24). The damper housing (24), the lower bracket (54) and the stay bracket (56) jointly form a closed cross section structure (58), and a retaining portion of the lower bracket (54) retaining the rear end (66A) of the torque rod (66) includes a part of the lower bracket (54) forming the closed cross section structure (58).

A tubular vibration-damping device including: an inner shaft member; an outer tube member; a main rubber elastic body elastically connecting the inner shaft member and the outer tube member, the main rubber elastic body being penetrated by a through hole in an axial direction; and a stopper rubber separated from the main rubber elastic body, the stopper rubber including an insert that is inserted in the through hole. A gap is provided in an axially middle portion of the insert, and the insert includes axially opposed faces that are opposed to each other in the axial direction with the gap in between.

The invention relates to an engine mount pendulum support device for supporting an engine relative to the body of a motor vehicle. The engine mount pendulum support device comprises a first attachment region for attaching the engine mount pendulum support device to the body, which attachment region comprises a first attachment surface for contact with the body, a second attachment region for attaching the engine mount pendulum support device to the body, which attachment region comprises a second attachment surface for contact with the body, a third attachment region for attaching the engine to the engine mount pendulum support device, wherein the first attachment region and the second attachment region are elastically connected to the third attachment region via a first elastic mount and via a second elastic mount, wherein the first attachment region and the second attachment region are firmly connected to each other by a connection member.

A torque rod for straddling connection target members including a rod member and a rubber bushing provided to a lengthwise end of the rod member. The rubber bushing includes an inside shaft member, an outer peripheral member to be attached to one of the connection target members, and a rubber elastic body connecting the inside shaft member and the outer peripheral member. The rubber bushing is a part separate from the rod member and the end of the rod member is fixed to the inside shaft member. The rod member includes an abutting face to abut against the one of the connection target members without interposing the outer peripheral member of the rubber bushing. A stopper to limit an amount of elastic deformation of the rubber elastic body in the rubber bushing is constituted by including the abutting face of the rod member.

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 roll rod for a vehicle includes: a front insulator connected to a powertrain; a rod bracket to mount the front insulator on a front end portion of the rod bracket; a case bracket disposed outside the rod bracket and fastened to a vehicle body; a stopping rubber formed at a rear end portion of the rod bracket and disposed in an inner space defined by the case bracket; and a rear insulator formed between the rod bracket and the case bracket, where the rear insulator is secured to an outer side surface of the rod bracket and an inner side surface of the case bracket. The roll rod enhances an insulation rate against vibration of a powertrain and improves durability while reducing manufacturing costs through the simple structure and application of an extrusion molding method.

A torque rod 16 which supports a driving source 11 on a vehicle body 15 includes: an annular first end part 17 which is connected to the driving source 11 while holding a first elastic bush 21 in an inner circumference thereof; an annular second end part 18 which is connected to the vehicle body 15 while holding a second elastic bush 23 in an inner circumference thereof; and a rod-shaped coupling part 19 which couples the first end part 17 and the second end part 18 to each other. An outer circumferential face of the first end part 17 includes a projection part 17a which projects radially outward so as to extend away from the second end part 18, and a mounting part 17b to mount a mass body 26 is formed in the projection part 17a.

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 third fluid chamber, a pressure compliant membrane, and a valve. 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 third fluid chamber has an opening in communication with the second fluid chamber and a vent port. The pressure compliant membrane seals the opening between the second fluid chamber and the third fluid chamber. The valve selectively seals the vent port in the third fluid chamber. A first stiffness profile of the mount assembly is selected by actuating the valve to open the vent port. A second stiffness profile of the mount assembly is selected by actuating the valve to close the vent port.

A roll mount device for a vehicle includes: a front mount configured to be connected to a power train; a rear mount configured to be connected to a vehicle body; and a rod disposed between the front mount and the rear mount. The front mount comprises: a core configured to be connected to the power train to receive vibration transmitted from the power train; an outer pipe disposed outside the core and spaced from the core by a predetermined distance with respect to a radial direction of the core; an elastic body disposed between the core and the outer pipe to absorb vibration transmitted thereto from the core; and a stopper disposed on an outer surface of the core to be spaced from an inner surface of the outer pipe by a predetermined distance.

A motor-vehicle engine suspension elastic device has a main body of metal and/or composite material elongated in a direction parallel to the longitudinal direction of the motor-vehicle. The elastic device has a first end that can be connected to a structural connecting element of a motor-vehicle, and a second end that can be connected to a motor-vehicle engine. The main metal body of the elastic device includes at least one portion elastically deformable in the aforesaid longitudinal direction.