An adjustable spring mounting assembly includes an adjustment plate, including a receiver, an elongated axle alignment slot and at least one height adjustment aperture, and an alignment correction insert received and held in said receiver. The alignment correction insert includes a plurality of alignment correction apertures wherein a selected one of the plurality of alignment apertures is aligned with the elongated axle alignment slot to correct axle alignment of the vehicle.

A leaf spring assembly for a wheel suspension of a motor vehicle including a leaf spring resiliently supporting of a wheel carrier on a vehicle body of the motor vehicle. The leaf spring has a first end portion, and a diametrically or longitudinally, opposite second end portion fastened, pivotably mounted, to the vehicle. The leaf spring includes a suspension portion extending between the two end portions. The leaf spring includes two spring leaves held pressed one against the other by a first clamp in the suspension portion and are held pressed one against the other by a second clamp distanced or longitudinally spaced from the first clamp. The position of the second clamp, its position on the leaf spring, is variable in the direction of the longitudinal axis of the leaf spring.

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.

A variable rate leaf spring vehicle suspension system is provided. The system includes a vehicle frame. The system also includes a single leaf spring extending from a first end to a second end. The system further includes a shackle operatively coupled to the vehicle frame and defining a channel, the second end of the leaf spring disposed within the channel of the shackle.

A suspension system for a vehicle is provided. The suspension system includes a first chassis rail extending longitudinally in an axial direction of the vehicle. The suspension system also includes a second chassis rail extending longitudinally in the axial direction of the vehicle. The suspension system further includes a transverse beam coupled to the first chassis rail and the second chassis rail. The suspension system yet further includes at least one leaf spring extending in a transverse direction of the vehicle, the at least one leaf spring having a spring rate that is actively variable. The suspension system also includes a fulcrum locator operatively coupled to the at least one leaf spring and to the transverse beam, the fulcrum locator in a sliding relationship with the at least leaf one spring.

An adjustable suspension mount assembly includes a bracket coupled to a suspension mounting component and coupled to a frame component of the vehicle. The assembly also includes a vertical adjustment assembly operatively coupled to the bracket. The assembly further includes an electric motor operatively coupled to the vertical adjustment assembly to adjust the vertical position of the bracket.

A suspension system for a vehicle is provided. The suspension system includes a first chassis rail extending longitudinally in an axial direction of the vehicle. The suspension system also includes a second chassis rail extending longitudinally in the axial direction of the vehicle. The suspension system further includes a transverse beam coupled to the first chassis rail and the second chassis rail. The suspension system yet further includes at least one leaf spring extending in a transverse direction of the vehicle, the at least one leaf spring having a spring rate that is actively variable. The suspension system also includes a fulcrum locator operatively coupled to the at least one leaf spring and to the transverse beam, the fulcrum locator in a sliding relationship with the at least leaf one spring.

A leaf spring vehicle suspension system includes a chassis rail and an axle. The suspension system also includes a first stage leaf spring. The suspension system further includes a second stage leaf spring. The suspension system yet further includes a third stage leaf spring operatively coupled at a first end and a second end to the chassis rail, wherein the first stage leaf spring is located below the third stage leaf spring and the second stage leaf spring is located below the first stage leaf spring. The suspension system also include a spacer in abutment with a leaf spring, wherein the spacer is formed of at least one composite material.

A suspension system includes a leaf spring, an actuator attached to the leaf spring, and an axle mount attached to the actuator. The actuator is disposed vertically between the leaf spring and the axle mount and is actuatable to change a distance between the leaf spring and the axle mount.

A leaf spring holder for connecting a leaf spring to an axle via a first fixing device and a second fixing device. Due to co-operation of the first fixing device with the second fixing device, a first mounting is spaced away from a second mounting to provide space for mounting the leaf spring between the first fixing device and the second fixing device. Co-operation of the first fixing device with the second fixing device enables deformation of a leaf spring section of the leaf spring between the first mounting and the second mounting. In order to increase the rigidity as a function of the spring deflection and/or to produce a rising-rate suspension, the leaf spring holder includes a stop surface for limiting deformation of the leaf spring section.