A damping force variable valve includes a case accommodating working fluid, a housing, a first fluid chamber, a second fluid chamber, and a valve element provided at the housing. The valve element includes a first end portion configured to be in contact with a first contact portion formed at a part of the housing, the valve element configured to perform reciprocating motion within an inner space portion of the housing. The damping force variable valve includes an actuator provided at the housing and including a second contact portion configured to be in contact with a second end portion of the valve element. One of the first end portion, the first contact portion, the second end portion and the second contact portion is provided with a communication portion including an opening. An opening area of the opening changes in accordance with a pressing force from the actuator.

An adjustable damping valve device with a damping valve has an elastic element, applies an axial relative force between two elements which are constructed so as to be axially movable relative to the valve housing, or the elastic element applies a relative force between an element of the damping valve, which element is constructed so as to be axially movable relative to the valve housing, and the valve housing, or the elastic element applies a relative force between an element of the damping valve, which element is constructed so as to be axially movable relative to the valve housing, and an element which is constructed so as not to be displaceable relative to the valve housing, so that one of the axially movable elements releases a flow passage for the flow of damping medium through the damping valve at least in a neutral state of the damping valve device.

Valve arrangement for a shock absorber is described, comprising a valve housing (2) having a first (7) and a second port (8), a pilot chamber (3) being in fluid communication with the first (7) and/or second port (8), wherein a pilot pressure (Pp) is defined by a hydraulic pressure in the pilot chamber (3). The arrangement further comprises a main valve member (4) being axially movably arranged in the valve housing (2) and being arranged to interact with a main valve seat member (9) in order to restrict a main fluid flow between the first (7) and second ports (8) in response to the pilot pressure (Pp) acting on the main valve member (4). Moreover, the main valve seat member (9) is movable between a first compression stroke position and a second rebound stroke position so that, during the compression stroke, the main fluid flow is restricted at a first restriction (R1) and a cooperating serially arranged second restriction (R2), and during the rebound stroke, the main fluid flow is restricted at a third restriction (R3).

Valve arrangement for a shock absorber is described, comprising a valve housing (2) having a first (7) and a second port (8), a pilot chamber (3) being in fluid communication with the first (7) and/or second port (8), wherein a pilot pressure (Pp) is defined by a hydraulic pressure in the pilot chamber (3). The arrangement further comprises a main valve member (4) being axially movably arranged in the valve housing (2) and being arranged to interact with a main valve seat member (9) in order to restrict a main fluid flow between the first (7) and second ports (8) in response to the pilot pressure (Pp) acting on the main valve member (4). Moreover, the main valve seat member (9) is movable between a first compression stroke position and a second rebound stroke position so that, during the compression stroke, the main fluid flow is restricted at a first restriction (R1) and a cooperating serially arranged second restriction (R2), and during the rebound stroke, the main fluid flow is restricted at a third restriction (R3) and a cooperating serially arranged fourth restriction (R4).

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.

An electromagnetic valve unit held so as to be sandwiched between a receiving portion of a housing portion of control equipment and a pressing member includes a shoulder portion to be opposed to the receiving portion of the housing portion and an annular elastic member provided with a protruded portion to be inserted into a recessed portion formed at the shoulder portion. The annular elastic member is further provided with an annular deformation portion that is deformable in the axial direction so as not to press the protruded portion in the axial direction.

A damper valve with an adjustable effective stiffness of a shim. The damper valve includes a piston. The piston has a fluid path formed therethrough. A shim is disposed proximate the fluid path formed through the piston. A stiffness adjustment feature is coupled to the shim, and the shim is disposed between the piston and the stiffness adjustment feature. The stiffness adjustment feature is configured to adjust the effective stiffness of the shim without affecting a preload applied to the shim.

A hydraulic damper including a high frequency valve assembly for reducing the level of damping force provided by the hydraulic damper during a rebound stroke during high frequency and/or low amplitude events.

A suspension device includes a fluid pressure circuit disposed between a damper, a pump, and a reservoir. The fluid pressure circuit includes an extension-side damping valve disposed in an extension-side passage, a contraction-side damping valve disposed in a contraction-side passage, a differential pressure control valve that controls a differential pressure between the extension-side passage and the contraction-side passage, a suction passage that connects the discharge passage to the supply passage at a point between the differential pressure control valve and the supply-side check valve, and a suction check valve disposed in the suction passage that allows only a flow of fluid heading for the supply passage from the discharge passage.

A suspension system of an associated vehicle. The suspension system comprises an outer reservoir tube extending along an axis between a first end and a second end and defining a chamber. A piston assembly is at least partially located in the chamber. The piston assembly includes a piston rod and a piston head. A solenoid assembly is connected to the piston rod. The solenoid assembly comprises a core including a core head and a core body. A spool extends about the core body and defines a space. A coil is wrapped around the spool within the space. An induction plate is at least partially located between the spool and the core head. As the input current is modulated the induction plate promotes the induction of eddy currents opposing the field induction attenuating the force ripples of the magnetic field buildup and decay.