A vehicle-height control system is configured to control a vehicle height for a wheel. The vehicle-height control system includes: a vehicle-height control actuator provided so as to correspond to the wheel; a pressure-medium supply and discharge device configured to supply and discharge a pressure medium to and from the vehicle-height control actuator; and a vehicle height controller configured to control the vehicle height for the wheel by controlling the pressure-medium supply and discharge device based on an inside temperature and an outside-air temperature to control at least one of supply and discharge of the pressure medium to and from the vehicle-height control actuator. The inside temperature is a temperature in the vehicle-height control system.

A vehicle control system, such as for an air suspension system of a vehicle, includes a control module having a sleep state and an awake state. Methods for operating the control system use a wake trigger to switch the control module, which is electrically coupled with a vehicle battery, from the sleep state to the awake state.

Provided is a damper with which the energy efficiency for attenuating input vibration corresponding to the unsprung resonance frequency and the sprung resonance frequency can be improved. Also provided is a method for manufacturing this damper. In this damper the electrical resonance frequency, as specified by the inductance of an electromagnetic motor and the capacitance of a capacitor, is set within ±20% of the unsprung resonance frequency, thereby enabling the input vibration corresponding to the sprung resonance frequency as well as the input vibration corresponding to the unsprung resonance frequency to be reduced.

An air suspension control system is for a vehicle with a first and a second axle. The system has an auxiliary control unit connected to a main control unit via a data link. The auxiliary unit has a pressure sensor associated with the first axle for determining pressure measurements of the first axle as pressure sensor signals and an input for receiving height sensor signals. The input can be connected to a first height sensor on the first axle for receiving first height signals and to a second height sensor on the second axle for receiving second height signals. The auxiliary unit is adapted to transmit the first and/or second height sensor signals and/or the pressure sensor signals to the main unit. The main unit is adapted to carry out weighing for the first and/or second axle in dependence on the first and/or second height signals and/or the pressure signals.

A vehicle includes a chassis, an axle, and a sway bar assembly coupled between the chassis and the axle. At least one actuator is configured to move the sway bar assembly relative to the axle to thereby move at least a portion of the chassis toward or away from the axle to adjust an attitude of the vehicle.

A vehicle includes a chassis, an axle, and a sway bar assembly coupled between the chassis and the axle. At least one actuator is configured to move the sway bar assembly relative to the axle to thereby move at least a portion of the chassis toward or away from the axle to adjust an attitude of the vehicle.

Provided is an electric suspension device including an electromagnetic actuator that is provided between a body and wheel of a vehicle and generates damping force for damping vibration of the body. It includes: an information acquisition unit that acquires information on the vehicle's sprung speed, pitch rate, and roll rate; a bounce target value computation unit that computes a bounce target value for controlling the vehicle's bounce orientation based on the sprung speed; a pitch target value computation unit that computes a pitch target value for controlling the vehicle's pitch orientation based on the pitch rate; a roll target value computation unit that computes a roll target value for controlling the vehicle's roll orientation based on the roll rate; and a driving control unit that controls driving of the actuator with a control target load which is based on a sum of the bounce, pitch, and roll target values.

A controlled air spring system with a compressed air supply for height regulation of a vehicle includes a number of air springs and a reservoir for the storage of compressed air, a number of switching valves for height regulation, and a controller configured to actuate the number of switching valves. The at least one switching valve is actuated with a number of sequential switching periods and switches over in a switching period, between a first switching state with an open valve state and a second switching state with a closed valve state, the switching period of the number of sequential shifting periods having the open valve state and the closed valve state. The controller is configured to set a speed for a height change of the height regulation. The setting of the speed takes place via an open/closed parameter.

In a turning system for a vehicle, a toe angle change is acquired based on an estimated stroke which is a stroke of a suspension which is estimated based on a moving state of a vehicle and an actual stroke which is an actual stroke of the suspension detected by a stroke sensor, and control of a turning angle of a vehicle wheel is performed based on the acquired toe angle change. Accordingly, it is possible to appropriately perform control of a turning angle even in travel.

An air suspension system of a commercial vehicle comprises an electronic control device with a level control valve device. A valve element is coupled to a drive element mechanically coupled to a vehicle wheel or axle. In a first relative position of the valve element and a counter valve element, a port for an air suspension bellow is blocked. In a second relative position, the port for the air suspension bellow is connected to a port for an aeration device. In a third relative position, the port for the air suspension bellow is connected to a port for a deaeration device. Control logic generates a control signal for an actuator which, when a level change is set by an operator, correspondingly changes the relative position of the valve element and the counter valve element or the relative position of the counter valve element and a valve housing.