A construction machine, in particular a road milling machine, comprising a machine frame, a traveling mechanism with front and rear traveling devices with at least one pair of front traveling devices and/or one pair of rear traveling devices, at least one pair of the front or rear traveling devices being connected to the machine frame via lifting columns each having a hydraulically adjustable piston-cylinder unit, a drive device for driving the hydraulically adjustable piston-cylinder unit of the lifting columns separately from one another, and a control device configured to control the lifting adjustment of the lifting columns by means of the hydraulically adjustable piston-cylinder units, and to a method for controlling the lifting position of a piston-cylinder unit of a lifting column of a construction machine, in particular a construction machine according to the invention.

An air suspension system for a motor vehicle and a method of operating thereof includes an air suspension device for adjusting a ride-height position of the motor vehicle by the feeding and removal of compressed air into a plurality of air springs. The system also includes a dryer supplied via a compressed-air supply unit which has a compressor driven by an electric motor. A control unit for performing a ride-height control function has instruction for: raising the ride-height position to a first ride-height position; subsequently lowering the ride-height position to a second ride-height position; checking a first condition whether a determined air quantity ratio is less than a first predetermined air quantity limit value; checking a second condition whether a saturation level of the dryer is greater than a saturation limit value, and activating the ride-height control function when either the first or the second condition is satisfied.

A device for the height adjustment of a road vehicle interposed between a frame and a suspension of the road vehicle so as to allow the vehicle to shift from a road configuration to a race configuration and vice versa. The device comprises a base body provided with a first end, which can mechanically be connected to the frame of the road vehicle; a first mass, which can be connected to the base body so as to be movable along a sliding axis; a second mass, which is connected to the first mass so as to be movable along the sliding axis as well and is configured to be able to be connected to a suspension of the road vehicle and to change the stroke of the suspension depending on the position of the second movable mass.

A vehicle height adjusting device includes a vehicle height adjusting unit, a prediction unit, and a vehicle height control unit. The vehicle height adjusting unit adjusts a vehicle height to one of a first state and a second state. In the first state, the vehicle height is set to a predetermined height, and in the second state, the vehicle height is set lower than the first state. The prediction unit predicts whether a drive battery (lower portion) of a vehicle interferes with a road surface in the second state. The vehicle height control unit controls the vehicle height adjusting unit to set the vehicle height to one of the first state and the second state. When the prediction unit predicts an interference between the drive battery of the vehicle and the road surface, the vehicle height adjusting unit restricts a transition from the first state to the second state.

A damper system for changing a ground clearance of a vehicle, including a main damper having a main damper chamber and a main damper piston movably arranged in a main damper tube and a spring assembly. The spring assembly includes a spring, a lower spring seat, and an upper spring seat. The spring is arranged between the lower spring seat and the upper spring seat, wherein one of the lower spring seat and the upper spring seat includes a cylinder and a piston, and the other one of the lower spring seat and the upper spring seat is coupled to the main damper and movable with the spring. The piston of the spring assembly is steplessly adjustable between a first position and a second position, wherein the first position corresponds to a predefined minimum ground clearance and the second position corresponds to a predefined maximum ground clearance.

The invention refers to a method of preventing automatic leveling during battery replacement, and a computer-program thereof. The method of preventing automatic leveling during battery replacement, according to invention, operates for an electric vehicle equipped with a first electronic control unit (100) in charge with battery replacement and a second electronic control unit (200) of suspension system, the respective ECUs (100, 200) communicating by means of an internal bus system. The method includes the following steps: (51) Sending an information from the first ECU to the second ECU that the vehicle is prepared to perform a battery replacement; (52) Once said information is received by the second ECU, triggering a leveling forbid flag to the suspension system and deactivating it; (53) Once said deactivation has been performed, setting a feedback signal to inform that battery replacement can commence; (54) during battery replacement, setting said feedback signal to inform that battery replacement is ongoing; (55) Upon completion of battery replacement, informing the second ECU that the battery replacement has been finished successfully, and allowing the activation of suspension.

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 may include a pneumatic spring at each wheel of a vehicle. The suspension system may be configured to determine and achieve a pressure set point in each of the pneumatic springs and a target ride height at each wheel of the vehicle. The pressure set point may be determined based on a load at each of the wheels and the center of gravity of the vehicle, such that upon reaching the pressure set point at each in each of the pneumatic springs, a target load and target ride height may be achieved at each of the wheels of the vehicle. The system may also be used to level the ride height of the vehicle and/or achieve a desired orientation.

One or more example vehicle adaptive ride height (ARH) systems to provide semi-active damping and ARH functionality. Each example ARH system is operable to dynamically control the vehicle, in response to dynamic detection of one or more operational parameters, between a raised vehicle state or position (e.g., ride height) and a lowered vehicle state or position. Such dynamic control facilitates greater reach-to-ground when in the lowered vehicle state and automatically controls vehicle ride height when in the raised vehicle state for dynamic loading conditions.

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.