A hydraulic shock absorber includes a piston, a damper tube, a suspension spring, a plunger, a jack chamber, a pump case, a pump piston, a screw shaft, and a drive unit. Both end surfaces of the pump piston in a reciprocating direction are a first end surface demarcating the pump chamber, and a second end surface demarcating the gas chamber, the second end surface having a screw hole into which the screw shaft is screwed. The pump piston includes a space portion between a bottom plate defining the first end surface and the screw hole. The screw shaft has a through-hole connecting the gas chamber with the space portion.

A stabilizer assembly for a two-track vehicle comprises: a first and a second stabilizer section; a spring element between the stabilizer sections; a hydraulic actuator having an actuator outer part and an actuator inner part, each of which is non-rotatably connected to one of the stabilizer sections, and an intermediate element connected to the actuator outer part and actuator inner part respectively via outer and inner engagement means, wherein one of the engagement means has a pitch component in the axial direction and the other runs parallel to the longitudinal axis, so that a relative rotational movement of the actuator parts is converted into an axial movement of the intermediate element, wherein the intermediate element pressurises a first and second hydraulic chamber respectively; the hydraulic chambers being hydraulically connected to one another with interposition of a control element.

A wheel steering system is provided that improves an environment of an actuator being mounted and reduces changes in toe angles of wheels at the time of a suspension stroke. The system includes: right and left hub carriers supported by a rear suspension mechanism; right and left tie rods having outer ends in a vehicle width direction thereof pivotally connected to the right and left hub carriers; and a Watts link having inner ends in the vehicle width direction of the right and left tie rod pivotally attached thereto so as to be pivotable about a pivot axis, wherein the actuator and the Watts link are arranged above springs, and the Watts link is connected with the actuator so as to be displaceable substantially along the vehicle width direction when a driving force of the actuator is inputted to the Watts link.

A torsion spring assembly for a wheel suspension of a motor vehicle, including two torsion bars arranged coaxially one inside another and also a spring element, which is arranged axially-parallel to the two coaxial torsion bars, and can be mounted on the motor vehicle body via a bearing position, wherein the radial outer hollow-cylindrical torsion bar can be mounted on the motor vehicle body side and is connected in a rotationally-fixed manner to an output lever fastenable on a wheel guiding element and the radial inner torsion bar is connected in a rotationally-fixed manner to the outer torsion bar and is connected in a rotationally-fixed manner via a coupling to the spring element.

An anti-roll device comprises a bar coupled to two links, a hydraulic control circuit (CC) and actuating means (MAC) comprising a casing (CR) defining the chamber (CH) subdivided into a first (P1) and a second (P2) part by a piston (PI), and comprising first (ES1) and second (ES2) inlets-outlets communicating with the first (P1) and second (P2) parts and an intermediate inlet-outlet (ES1) communicating with the first part (P1) or with the second part (P2) depending on the position of the piston (PI). These actuating means (MAC) adopt a disengaged state or block state in whatever position of the piston (PI), according to the accessibility status of the first (ES1) and second (ES2) inlets-outlets and of the intermediate inlet-outlet (ES1). The control circuit (CC) controls the accessibility statuses according to the commands received.

A suspension system includes: an electromagnetic damper 2 that is provided between a vehicle body B which is a sprung member of a vehicle and a tire T which is an unsprung member of the vehicle, and applies a damping force and a drive force in a stroke direction to the vehicle body B and the tire T by a motor; an unsprung member acceleration sensor that detects unsprung member acceleration in the stroke direction of the tire; and an ECU that controls the motor. The ECU controls the motor to generate a load F.sub.m in such a direction that increases the relative velocity of the vehicle body B with respect to the tire T and of an amount corresponding to the unsprung member acceleration.

A suspension system includes a rotation inducing member for causing a cylinder to rotate relative to piston rod in response to an axially-applied force. In examples, the rotation inducing member may be embodied as a bushing structure. In other examples, the cylinder and/or the piston rod may include the rotation inducing member. The inducement of rotational motion may help overcome stiction or similar frictional forces between the piston rod and the cylinder.

The electromagnetic suspension apparatus includes: an electromagnetic actuator provided in parallel with a spring member between a vehicle body and a wheel of a vehicle and configured to generate driving force involving vibration damping of the vehicle body; an information acquisition unit configured to acquire, through a high-pass filter, time-series information about a stroke position of the electromagnetic actuator; and an ECU configured to calculate target driving force of the electromagnetic actuator and use the calculated target driving force to execute driving force control of the electromagnetic actuator. The ECU corrects the target driving force such that when the stroke position on the basis of the high-pass-filter-processed time-series information, from which low-frequency components (steady state deviation) have been removed, is present in a neutral region including a neutral position, spring force of the spring member is made weaker than when the stroke position is present in a non-neutral region.

A latching assembly includes a lift housing extending along a center axis between a first and a second opened ends and defining a chamber extending therebetween. A support tube is disposed in the chamber and extends between a first and a second end. A moving member is disposed between the support tube and the lift housing for moving the lift housing between an extended position and a lowered position. The moving member includes an inner ring and an outer ring. The inner ring extends about the support tube. The outer ring is attached to the lift housing for translating an axial movement of the support tube into a rotational movement. A plurality of engagement members located between the inner ring and the outer ring for moving the inner ring and said outer ring axially along the center axis from the extended position to the lowered position.

A rotating latch assembly includes a lift housing extending between a first opened end and a second opened end and defining a chamber extending therebetween. A support tube is slidably disposed in the chamber and extends between a first end and a second end. The lift housing is movable along the support tube between an extended position and a lowered position in response to a movement provided by an actuator wherein the extended position is the lift housing being adjacent to the first end and the lowered position is the lowered position being adjacent to the second end. A retaining member is disposed between the lift housing and the support tube and attached to the support tube and the lift housing for maintaining the lift housing in the extended position as the lift housing moving from the lowered position to the extended position.