Aspects of the present invention relate to a active roll bar damper assembly (1) suitable for an active roll bar (5). The active roll bar damper assembly (1) includes a first subassembly (15-1) and a second subassembly (15-2) for mounting to the active roll bar (5). The first subassembly (15-1) includes a rigid first mass (17) having a first aperture (27). At least one first spring (21-n) is disposed in the first aperture (27) for positioning between the active roll bar (5) and the first mass (17). The second subassembly (15-2) includes a rigid second mass (37) having a second aperture (47). At least one second spring (41-n) is disposed in the second aperture (47) for positioning between the active roll bar (5) and the first mass (17). The first and second masses (17, 37) are configured to engage each other to limit compression of the first and second springs (21-n, 41-n). Aspects of the present invention also relate to an active roll control system (3) including an active roll bar damper assembly (1); and a vehicle (V).

Disclosed is a mechatronic chassis device (6) for a motor vehicle comprises a housing (7) and at least one functional element (11) in the housing (7). The device is characterized by means (14) for recognizing the ingress of a liquid medium into the housing (7).

A suspension system including four dampers, a first hydraulic circuit with a front hydraulic line, a rear hydraulic line, and a first longitudinal hydraulic line that extends between and fluidly connects the front and rear hydraulic lines of the first hydraulic circuit, and a second hydraulic circuit with a front hydraulic line, a rear hydraulic line, and a second longitudinal hydraulic line that extends between and fluidly connects the front and rear hydraulic lines of the second hydraulic circuit. One or more frequency dependent valves are connected to and control fluid flow between the first and second hydraulic circuits. The frequency dependent valves are configured to open and hydraulicly decouple the dampers by permitting fluid flow between the first and second hydraulic circuits in response to high frequency suspension impacts.

The active suspension system includes right and left dampers, a pump, and a control valve system. Each of the right and left dampers includes a damper housing, a piston rod, and a piston that is mounted on the piston rod. The piston is arranged in sliding engagement inside the damper housing such that the piston divides the damper housing into first and second working chambers. The pump includes a pump intake and a pump outlet. The control valve system is connected in fluid communication with the first and second working chambers of the right damper, the first and second working chambers of the left damper, the pump intake, and the pump outlet. The control valve system has several different arrangements of fluid flow paths that provide different working modes for the active suspension system.

The present invention relates to an improved control system of the trim of motorcycles with more than two wheels. More in particular, it relates to motorcycles which have at least three wheels and can lean sideways by virtue of the presence of a so-called wheel tilting system. The present invention improves the HTS hydro-pneumatic system developed by the same Applicant, which is the object of Patent EP 2 046 589, so as to improve the vehicle trim, above all while cornering with the leaned vehicle.

A control system controls lift axles of an articulated dump truck to lower a designated lift axle when it senses the designated lift axle is in a raised position and the dump truck bed is at least partially raised. The designated lift axle is the lift axle closest to where a hydraulic piston that raises the bed connects to the dump truck frame. In one aspect, the control system additionally senses the weight of the dump truck bed (or a proxy, such as hydraulic pressure in the piston raising the bed), and only lowers the designated lift axle if the weight exceeds a predetermined threshold. Lowering the designated steer lift axle provides the full axle length (e.g., up to 8 feet) of lateral stability at the point of application of the much of the load weight to the frame. This reduces torque on the frame, and may prevent torque damage.

A control system controls lift axles of an articulated dump truck to lower a designated lift axle when it senses the designated lift axle is in a raised position and the dump truck bed is at least partially raised. The designated lift axle is the lift axle closest to where a hydraulic piston that raises the bed connects to the dump truck frame. In one aspect, the control system additionally senses the weight of the dump truck bed (or a proxy, such as hydraulic pressure in the piston raising the bed), and only lowers the designated lift axle if the weight exceeds a predetermined threshold. Lowering the designated steer lift axle provides the full axle length (e.g., up to 8 feet) of lateral stability at the point of application of the much of the load weight to the frame. This reduces torque on the frame, and may prevent torque damage.

A suspension system including four dampers, a first hydraulic circuit with a front hydraulic line, a rear hydraulic line, and a first longitudinal hydraulic line that extends between and fluidly connects the front and rear hydraulic lines of the first hydraulic circuit, and a second hydraulic circuit with a front hydraulic line, a rear hydraulic line, and a second longitudinal hydraulic line that extends between and fluidly connects the front and rear hydraulic lines of the second hydraulic circuit. One or more frequency dependent valves are connected to and control fluid flow between the first and second hydraulic circuits. The frequency dependent valves are configured to open and hydraulicly decouple the dampers by permitting fluid flow between the first and second hydraulic circuits in response to high frequency suspension impacts.

A vehicle includes a vehicle body arranged along a first axis and first and second road wheels, each mounted on a second axis perpendicular to the first axis. The vehicle also includes a stabilizer bar mounted to the vehicle body. The vehicle additionally includes respective first and second telescoping multiple-section links connecting the stabilizer bar to corresponding first and second road wheels. Each of the first and the second telescoping multiple-section links is configured to selectively operate in a first mode and a second mode. In the first mode, telescoping of each of the first and the second multiple-section links is locked to operatively connect the first road wheel to the second road wheel via the stabilizer bar. In the second mode, the telescoping of each of the first and the second multiple-section links is unlocked to operatively disconnect the first and second road wheels from the stabilizer bar.

A hydraulic system for an active chassis of a motor vehicle. The hydraulic system includes a plurality of hydraulic actuators, a plurality of hydraulic lines, a hydraulic accumulator, and an electro-hydraulic motor pumping unit, by way of which, during operation of the hydraulic system, a hydraulic fluid, in particular a hydraulic oil, is conveyable through the hydraulic lines. The hydraulic system also includes valves that are associated with the hydraulic actuators. The hydraulic system is designed to electronically control a selective filling of the hydraulic actuators with the hydraulic fluid. The hydraulic system includes a cooling apparatus having a cooling body, which is attached to the hydraulic accumulator.