A shock absorber for a vehicle includes an inner tube at least partially defining an inner fluid compartment and an outer tube enclosing at least in part the inner tube therein. Together, the inner tube and the outer tube at least partially define an outer fluid compartment therebetween. The inner tube defines a bypass zone having a plurality of bypass apertures that fluidly communicate the inner fluid compartment with the outer fluid compartment. A piston is movably mounted within the inner tube and moves in compression and in rebound. The piston defines a piston passage extending through the piston for permitting fluid flow between a first side and second side of the piston. An electronically controlled valve is connected to the piston and controls fluid flow through the piston passage. A method for controlling the shock absorber is also disclosed.

In some embodiments, an immersion cooling system comprises a spring damper, a crumple block, a frictional layer, and/or preloaded spring-based mounts to mitigate the effects of seismic events. In other embodiments, the combined mass of liquids in the immersion tank and a compensation tank is kept constant to maintain the system's response to seismic events. In still other embodiments, an immersion cooling system comprises a tunable mass to provide an active response to seismic events. In yet other embodiments, an immersion tank is located within a housing pallet and is moveable within the palette. Spring dampers dampen tank movement within the pallet and shutoff switches housed in the pallet cause power to components in the tank to be shut off in response to tank movement. Cooling liquid can be transferred from the tank to a secondary reservoir to avoid cooling liquid loss and protect the tank.

In some embodiments, an immersion cooling system comprises a spring damper, a crumple block, a frictional layer, and/or preloaded spring-based mounts to mitigate the effects of seismic events. In other embodiments, the combined mass of liquids in the immersion tank and a compensation tank is kept constant to maintain the system's response to seismic events. In still other embodiments, an immersion cooling system comprises a tunable mass to provide an active response to seismic events. In yet other embodiments, an immersion tank is located within a housing pallet and is moveable within the palette. Spring dampers dampen tank movement within the pallet and shutoff switches housed in the pallet cause power to components in the tank to be shut off in response to tank movement. Cooling liquid can be transferred from the tank to a secondary reservoir to avoid cooling liquid loss and protect the tank.

A damping force generation structure includes a damping force generation mechanism, and a damping force adjustment mechanism. The damping force adjustment mechanism includes a drive mechanism configured to be able to drive the valve body, and a coupling member having a first end fixed to the drive mechanism and a second end fixed to the fixing member, thereby coupling the drive mechanism and the fixing member. At least one of a position of the damping force generation mechanism relative to the fixing member, a position of the coupling member relative to the fixing member, and a position of the drive mechanism relative to the coupling member is adjustable in the advancing and retracting direction of the valve body by a position adjustment mechanism.

A damping force generation structure includes a damping force generation mechanism, and a damping force adjustment mechanism. The damping force adjustment mechanism includes a drive mechanism configured to be able to drive the valve body, and a coupling member having a first end fixed to the drive mechanism and a second end fixed to the fixing member, thereby coupling the drive mechanism and the fixing member. At least one of a position of the damping force generation mechanism relative to the fixing member, a position of the coupling member relative to the fixing member, and a position of the drive mechanism relative to the coupling member is adjustable in the advancing and retracting direction of the valve body by a position adjustment mechanism.

A controllable vibration damper with damping force control may include a damper tube housing that is filled with damping medium. The controllable vibration damper may also include a damping valve element that is structurally and fluidically connected to the damper tube housing for damping force control. The damping valve element may be configured as a pilot-controlled pressure-limiting valve having a pilot valve. Further, a two-stage pre-throttle valve assembly placed in front of the pilot valve. The damping valve element may be arranged internally with respect to the damper tube housing in some cases. In other cases, the tamping valve element may be arranged externally with respect to the damper tube housing.

A damper control device and a suspension device of the present invention controls a damping force of the damper based on a bank angle. Since a degree of the bank angle is a measure of easiness of occurrence of highside, and the damping force of dampers is controlled based on the bank angle in the damper control device and the suspension device, the damping force of the dampers can be appropriately controlled in accordance with a situation in which the highside is easy to occur.

Since a control device for dampers and a suspension device of the present invention control damping force of the dampers based on extension time, when jump of a vehicle is small, the damping force of the dampers does not become excessively large, or when the jump of the vehicle is large, the damping force of the dampers does not become excessively small, and a large shock is not applied to a rider of the vehicle.

Since a control device for dampers and a suspension device of the present invention control damping force of the dampers based on extension time, when jump of a vehicle is small, the damping force of the dampers does not become excessively large, or when the jump of the vehicle is large, the damping force of the dampers does not become excessively small, and a large shock is not applied to a rider of the vehicle.

An electrically or electromagnetically operated valve has a movable structural group with a magnetic armature, which is movable along an axis between a first and a second position to open or close the valve. The valve has a valve sleeve in which the magnetic armature is movable between the first and the second position, the magnetic armature defining on its axial sides two volumes in the valve sleeve. There is provided a throttling element elastic in the radial direction, which is arranged between the first volume and the second volume such that upon axial movement of the movable structural group it throttles an air stream between the first volume and the second volume in order to decelerate a movement of the movable structural group.