A fluid-filled vibration damping device includes a switching valve arranged inside the fluid passage passing through a partition member to communicate with a main fluid chamber and a sub fluid chamber and protruding from one wall surface toward the other wall surface of the fluid passage that face each other. A gap is provided between the switching valve and the other wall surface. A tip end part of the switching valve abuts against the other wall surface through a tilt displacement in a swing manner of the switching valve in the passage length direction of the fluid passage to thereby form a switching mechanism for closing the gap. An elastically deformable fin-shaped protrusion protruding from the tip end part of the switching valve toward the other wall surface is provided. A leak passage is formed between a protruding tip end of the fin-shaped protrusion and the other wall surface.

Methods and systems are provided for an engine. In one example, a method includes adjusting a stiffness of an engine suspension unit in response to outputs from the engine and the electric motor. The stiffness increases as an engine power output decreases.

A vehicle powertrain proactive damping system includes a plurality of proactive damping structures mounted on a powertrain structure with each proactive damping structure includes a magneto rheological elastomer (MRE). An electromagnet is associated with each proactive damping structure. A control unit includes a processor circuit. A sensor obtains vibration data regarding the powertrain structure. A LIDAR sensor is mounted on the vehicle and is electrically connected with the control unit. The LIDAR sensor provides data to the control unit indicative of upcoming road surface conditions to be experienced by the vehicle. Based on data from at the sensor and the LIDAR sensor, the processor circuit is constructed and arranged to control voltage to the electromagnets to selectively adjust a rigidity of the associated proactive damping structure so as to control vibrational effects on the powertrain structure.

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.

Controllable hydraulic vibration-damping support comprising a rigid block, a bell-shaped elastomer body becoming wider from the block to an annular strength member, a working chamber, a compensation chamber, a constricted passageway connecting the working chamber to the compensation chamber, and an auxiliary chamber separated from the working chamber by a decoupling valve controlled by a control device. The auxiliary chamber, the decoupling valve and the control device are in the block.

A structure of an active mount is provided. The structure includes a case with an interior that is divided into upper and lower fluid chambers, a sealed hydro fluid flows based on a volume change of the upper fluid chamber due to deformation of an insulator, and flow characteristics of the hydro fluid are varied when power is applied to a driver. The structure further includes a generator that produces electricity based on behavior of the insulator. The generator is disposed within the case and the electricity produced by the generator is applied to the driver. Additionally, the generator autonomously produces electricity based on engine behavior and is mounted within an engine mount and, thus, supply of electricity from the outside is not required.

Provided is an active engine mount having a vent hole that includes a damper assembly including an exciter. The damper assembly in the active engine mount which controls pressure of a main chamber as the exciter is excited has a vent hole that enables communication from a lower part of the exciter to the outside formed thereon such that air inside the damper assembly can be discharged to the outside.

An engine mount includes a nozzle plate mounted between an insulator and a diaphragm so as to divide an interior into an upper liquid chamber and a lower liquid chamber, and an annular flow path formed in the nozzle plate so that an encapsulated hydraulic liquid flows between the upper liquid chamber and the lower liquid chamber, the nozzle plate being opened at an upper side of the flow path; a shielding member which has two or more shielding plates arranged to cover the upper side of the flow path; an adjusting bolt which is rotatably mounted in a core coupled to the insulator; and a connector, in which the shielding plates are folded or unfolded in accordance with a rotation of the adjusting bolt, and a size of an upper flow path hole is determined depending on a state in which the shielding plates are folded or unfolded.

An arrangement and method for maintaining an alignment of an internal combustion engine by utilizing an arrangement includes a number of fluid springs by means of which the engine is mounted on a foundation thereof, control valves arranged in communication with each fluid spring, at least three position sensors in communication with the engine, and an electronic control unit. The electric control unit is provided with preset engine position values. The method includes collecting engine position information to the electric control unit, comparing the position information to preset position values, determining, if the position information differs from the preset position values, such control valves that need to be operated, calculating the corrective measures, and giving corrective instructions to the control valves.

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.