This invention pertains to sway bar systems, and a method of controlling their operation. Specifically, the present invention relates to provide a way of adjusting the response characteristics of a sway bar system by changing the structure of the typical sway bar links and regulating the modified structure by utilizing an electronically adjustable sway bar link. Said electronically adjustable sway bar link comprises a twin tube cylinder filled with mixed incompressible fluid and pressurized gas and forms a determined volume in order to host pressurized gas higher than fluid flow regulation functions, permitting a directional control valve to always remain fully submerged in incompressible fluid and to modify the fluid path between each tube of said twin tube cylinder, allowing closed or opened fluid flow operation, determined by a controlling device receiving an electronic input and piloting said directional control valve.

A vibration damping control apparatus of a vehicle obtains first data from a road surface information in which position information, a road surface displacement related value, and speed information are rerated to one another. The first data represents a time series change of the road surface displacement related value on a predicted route of a wheel. The vibration damping control apparatus obtains speed information at a predicted passage position from the road surface information. In the case where the speed of the vehicle at the present point in time is higher than a speed represented by the speed information, the vibration damping control apparatus executes a first process (low-pass filter process) on the first data, obtains preview information from the first data having been subjected to the first process, and controls a control force generating apparatus on the basis of a target control force computed by using the preview information.

A damping control system comprises a first vehicle, a second vehicle, and a storage device. The first vehicle provides, to the storage device, travel information including a change value of a road surface, position information, and position reliability of the position information. The storage device executes first update processing of updating related value information based on a road surface displacement-related value identified based on the change value, when the position reliability is equal to or higher than a threshold reliability, and executes second update processing of updating the related value information, when the position reliability is lower than the threshold reliability. The second vehicle executes preview damping control using a target control force calculated based on a control related value being a road surface displacement-related value at a predicted passing position.

Described are devices, systems, and methods that enable greater control and customization of variable suspension systems via mechanical modification, among other advantages. In one example, a linkage device is configured to be attached to a suspension arm of a vehicle and to a vehicle frame of the vehicle. The linkage device is configured to mechanically modify one or more physical states detected by a sensor of the vehicle, thereby causing the sensor to output modified signals to a controller, and causing the controller to output modified control signals to a variable shock absorber connected between the vehicle frame and the suspension arm, thereby modifying one or more variable physical properties of the variable shock absorber.

A suspension system for a land vehicle is provided with at least one actuator connected to a chassis and an axle of a land vehicle spaced apart from a pivotal connection of the axle. A suspension circuit is in cooperation with the at least one actuator. A controller is in operable communication with the suspension circuit and is programmed to receive input indicative of a travel speed of the land vehicle. The suspension circuit is closed at a low speed travel range to permit the axle to pivot in response to variations in an underlying support surface. The suspension circuit is opened to permit selective actuation of the at least one actuator at a higher speed travel range in response to variations in the underlying support surface.

Integrated multiple actuator electro-hydraulic systems as well as their methods of use are described. Depending on the particular application, the integrated electro-hydraulic systems may exhibit different frequency responses and/or may be integrated into a single combined unit.

A hydraulic damper assembly comprises a housing extending between a first end and a second end. A main piston is slidably disposed in the fluid chamber dividing the fluid chamber into a first chamber and a second chamber. A piston rod extends along a center axis and attaches to the main piston. An additional piston is coupled to the piston rod and axially spaced from the main piston. The additional piston includes a main body defining a compression channel and a rebound channel that allow fluid to flow through the additional piston. A securing member secures the additional piston to the piston rod and defines an outer groove. A piston ring is located in the outer groove between the additional piston and the securing member. The piston ring is radially spaced from the securing member to allow the piston ring to be in engagement with the housing.

A modular chassis is provided for an off-road vehicle to improve assembly, servicing, and repairing of a drivetrain of the off-road vehicle. The modular chassis includes a chassis to support components of the off-road vehicle. A front frame module couples with a front of the chassis, and a rear frame module couples with a rear of the chassis. The front frame module supports lower suspension arms of the off-road vehicle by way of inboard bushing joints. The front frame module supports at least a steering gear and a front differential of the off-road vehicle. The rear frame module is a tube-frame structure that supports components of the off-road vehicle. A lower portion of the rear frame module extends rearward and acutely upward to a top frame member that couples with upper side portions of the chassis. Several cross-members impart structural integrity to the rear frame module.

A chassis control arm for a wheel suspension has a control arm body, a spring abutment and an actuator which is arranged between the control arm body and the spring abutment and with which the position of the spring abutment relative to the control arm body can be adjusted. The actuator comprises a lifting gear which is configured as a movement thread and which includes a lifting spindle on which the spring abutment is arranged or on which the spring abutment is axially movably mounted.

A damper assembly includes a cylinder defining a chamber. The damper assembly includes a body supported by the cylinder and having a first surface and a second surface opposite the first surface. The body defines a passage extending from the first surface to the second surface. One of the first surface or the second surface define a slope at the passage. The damper assembly includes a check disc at the slope, the check disc selectively restricting fluid flow through the passage.