A dual piston adjuster for a shock absorber has a first damping piston and a second damping piston. A first fluid path includes a first cross-sectional flow area and provides fluid communication of a working fluid to bypass the damping pistons. A second fluid path provides fluid communication of the working fluid from the first fluid path through the first damping piston and the second damping piston in series. A third fluid path includes a second cross-sectional flow area and provides fluid communication of the working fluid from the second fluid path at a location between the first damping piston and the second damping piston to bypass the second damping piston. A first adjustable valve is provided to selectively adjust a first pressure drop of the working fluid in the first fluid path and a second adjustable valve is provided to selectively adjust a second pressure drop of the working fluid in the third fluid path.

A velocity dependent flow control unit for an air spring. The velocity dependent flow control unit including a compression fluid pathway with a one-way valve and a rebound fluid pathway with a one-way valve. The velocity dependent flow control unit can be fixed and coupled between two additional air chambers of the air shock. A spring curve of said air shock can be dependent upon a velocity of a compression of the air shock and can be controlled by a flow rate of a fluid passing the two additional chambers and the velocity dependent flow control unit.

Disclosed herein are active hydraulic cylinders for use in active vehicle suspension systems, and methods for assembling active hydraulic cylinders for use in an active vehicle suspension system. In particular, in certain embodiments a manifold may encircle a portion of an outer tube of a twin tube assembly. The manifold may mechanically and fluidly couple a pump assembly to the twin tube assembly. In certain embodiments, the manifold may be welded onto the outer tube.

Disclosed herein are active hydraulic cylinders for use in active vehicle suspension systems, and methods for assembling active hydraulic cylinders for use in an active vehicle suspension system. In particular, in certain embodiments a manifold may encircle a portion of an outer tube of a twin tube assembly. The manifold may mechanically and fluidly couple a pump assembly to the twin tube assembly. In certain embodiments, the manifold may be welded onto the outer tube.

Provided is an automatically controlled shock stiffening system. The automatically controlled shock stiffening system may include an electronic control unit receiving sensor input which automatically stiffens and softens a shock during operation. An override button is provided to immediately stiffen the shock in response to a user activating the override button. The system may include a main body with an oil flow aperture and a flow control system that operates to restrict the flow of oil between the reservoir and the shock. The automatically controlled shock stiffening system may be coupled between the reservoir and the bridge of the shock and operates to restrict flow of the oil in order to stiffen the shock immediately in response to activation of the override button.

Provided is an automatically controlled shock stiffening system. The automatically controlled shock stiffening system may include an electronic control unit receiving sensor input which automatically stiffens and softens a shock during operation. An override button is provided to immediately stiffen the shock in response to a user activating the override button. The system may include a main body with an oil flow aperture and a flow control system that operates to restrict the flow of oil between the reservoir and the shock. The automatically controlled shock stiffening system may be coupled between the reservoir and the bridge of the shock and operates to restrict flow of the oil in order to stiffen the shock immediately in response to activation of the override button.

An anti-cavitation piston for use with shock absorbers is provided. The anti-cavitation piston enables improved damping performance and pressure balance. An embodiment of the anti-cavitation piston includes a two part main piston having a first piston member coupled to a second piston member and additional ports and valving to control damping and reduce or inhibit cavitation during compression and rebound strokes of the shock absorber. Another embodiment of the anti-cavitation piston includes a twin piston device having a first piston and a second piston and additional boost valves, other valving and electronic valving and ports to control damping and reduce or inhibit cavitation during compression and rebound strokes of the shock absorber.

An anti-cavitation piston for use with shock absorbers is provided. The anti-cavitation piston enables improved damping performance and pressure balance. An embodiment of the anti-cavitation piston includes a two part main piston having a first piston member coupled to a second piston member and additional ports and valving to control damping and reduce or inhibit cavitation during compression and rebound strokes of the shock absorber. Another embodiment of the anti-cavitation piston includes a twin piston device having a first piston and a second piston and additional boost valves, other valving and electronic valving and ports to control damping and reduce or inhibit cavitation during compression and rebound strokes of the shock absorber.

The present disclosure relates to a dynamic vibration absorber for reducing vibrations of a component installed on a vehicle frame member. The dynamic vibration absorber has an air tank, an elastic member comprising a first spring member, and a gripping device attached to the elastic member and configured to grip the air tank. The gripping device has a first gripping member having a first gripping space to embrace at least a portion of the air tank. The first gripping member is configured such that when the at least portion of the air tank is fitted to the first gripping space, a first gripping force is applied to the least portion of air tank.

The present disclosure relates to a dynamic vibration absorber for reducing vibrations of a component installed on a vehicle frame member. The dynamic vibration absorber has an air tank, an elastic member comprising a first spring member, and a gripping device attached to the elastic member and configured to grip the air tank. The gripping device has a first gripping member having a first gripping space to embrace at least a portion of the air tank. The first gripping member is configured such that when the at least portion of the air tank is fitted to the first gripping space, a first gripping force is applied to the least portion of air tank.