A switching valve for an air spring arrangement of a motor vehicle, which switching valve has a valve housing arrangement which, in the installed state, is arranged between a first air volume and a second air volume. A valve closing member arrangement is actuatable by an actuator is provided such that the valve closing member arrangement, in a first position, fluidically connects the first air volume to the second air volume and, in a second position, fluidically separates the first air volume from the second air volume. The valve closing member arrangement is designed as a rotary slide arrangement. A rotary slide member with first openings is provided between two valve closing bodies, wherein, in the first position, the first openings correspond with second openings of the valve closing body such that a fluidic connection can be produced between the first and the second air volume.

A method and system for operating pneumatic suspension system including a plurality of air springs changing a ride height of the motor vehicle by the supply and extraction of compressed air, at least two first axle air springs, and two second axle air springs, an air spring valve, a first and further changeover valve are arranged in a compressed air path, an additional accumulator valve, the second compressed air path is connected to the first compressed air path via a third compressed air path in which a connecting valve is provided, for simultaneous adjustment of the ride height of the vehicle on both axles, the air spring valves, and the first and the further changeover valves and the additional accumulator valve are opened at the same time while the connecting valve remains closed.

A vehicle includes a sprung mass including a cabin coupled to a chassis, tractive assemblies each including at least one tractive element, springs coupling the tractive elements to the sprung mass, each spring imparting an upward force on the sprung mass, load sensors each configured to provide a signal indicative of the force imparted by one of the springs, and a controller operatively coupled to the load sensors. The controller is configured to determine a weight of the sprung mass using the signals from the load sensors and monitor at least one operational condition of the vehicle. The controller is configured to determine whether or not to disable determination of the weight based on the at least one operational condition.

A vehicle includes a sprung mass including a cabin coupled to a chassis, tractive assemblies each including at least one tractive element, springs coupling the tractive elements to the sprung mass, each spring imparting an upward force on the sprung mass, load sensors each configured to provide a signal indicative of the force imparted by one of the springs, and a controller operatively coupled to the load sensors. The controller is configured to determine a weight of the sprung mass using the signals from the load sensors and monitor at least one operational condition of the vehicle. The controller is configured to determine whether or not to disable determination of the weight based on the at least one operational condition.

A method and system for adjusting height and damping force, the method comprising: between a first connection part (110) and a second connection part (120), arranging a pneumatic valve (130), an air spring (140), an adjustable damper (150) and a damping force adjustment device (160) used for adjusting the damping force of an adjustable damper (150), the positions of the pneumatic valve (130), the air spring (140), the adjustable damper (150) and the damping force adjustment device (160) being adaptive and the pneumatic valve (130) being connected to the damping force adjustment device (160) and the air spring (140), respectively; the pneumatic valve (130) collects at least one movement variable of the first connection part (110) relative to the second connection part (120); meanwhile, the pneumatic valve (130), according to the collected movement variable and/or the change in the movement variable, controlling the air spring (140) to inflate or deflate so as to implement height adjustment; and/or carrying out gas driving on the damping force adjustment device (160) to control the adjustable damper (150) to output corresponding damping force, so as to adjust the size of the damping force of the adjustable damper (150), which improves the sensitivity of height adjustment and damping force adjustment.

A method and system for adjusting height and damping force, the method comprising: between a first connection part (110) and a second connection part (120), arranging a pneumatic valve (130), an air spring (140), an adjustable damper (150) and a damping force adjustment device (160) used for adjusting the damping force of an adjustable damper (150), the positions of the pneumatic valve (130), the air spring (140), the adjustable damper (150) and the damping force adjustment device (160) being adaptive and the pneumatic valve (130) being connected to the damping force adjustment device (160) and the air spring (140), respectively; the pneumatic valve (130) collects at least one movement variable of the first connection part (110) relative to the second connection part (120); meanwhile, the pneumatic valve (130), according to the collected movement variable and/or the change in the movement variable, controlling the air spring (140) to inflate or deflate so as to implement height adjustment; and/or carrying out gas driving on the damping force adjustment device (160) to control the adjustable damper (150) to output corresponding damping force, so as to adjust the size of the damping force of the adjustable damper (150), which improves the sensitivity of height adjustment and damping force adjustment.

A motor vehicle has a steering axle, a drive axle and a lift axle having an actuator for lifting and lowering the same. The wheels of the drive axle can be electrically driven, at least in a supporting manner, via an electric machine operable as an electric motor and as a generator, and the wheels can be driven in a generating manner in a recuperation operation. The electric machine is connected to an accumulator and to a control and/or regulation device to control the operation of the lift axle. The device is connected to sensors for wheel slip detection at the drive axle. The device is configured such that, during a recuperation operation, it can send a command to the actuator to lift the lift axle and thereby unload the wheels thereof, if there is wheel slip at least at one wheel of the drive axle.

An air spring suspension system includes a first air spring that has a first volume with a first pressure that is configured to provide a first spring stiffness to a first suspension assembly. A second air spring has a housing with a second volume with a second pressure that is configured to provide a second spring stiffness to a second suspension assembly. The second air spring includes a piston that is arranged in the second volume. One of the housing and the piston includes a first mounting structure that is configured to connect to a vehicle chassis. Another of the housing and the piston includes a second mounting structure that is configured to connect to the second suspension assembly. The second air spring also includes a fluid connection on the housing. The second air spring further includes a crosslink valve that is disposed in the housing and movable between open and closed positions. The crosslink valve is configured to selectively fluidly connect the second volume to the fluid connection. A crosslink line is fluidly connected to the first volume of the first air spring and the fluid connection on the second air spring. A controller is in communication with the crosslink valve. The controller is configured to command the crosslink valve between the open and closed positions in response to an input.

An air spring suspension system includes a first air spring that has a first volume with a first pressure that is configured to provide a first spring stiffness to a first suspension assembly. A second air spring has a housing with a second volume with a second pressure that is configured to provide a second spring stiffness to a second suspension assembly. The second air spring includes a piston that is arranged in the second volume. One of the housing and the piston includes a first mounting structure that is configured to connect to a vehicle chassis. Another of the housing and the piston includes a second mounting structure that is configured to connect to the second suspension assembly. The second air spring also includes a fluid connection on the housing. The second air spring further includes a crosslink valve that is disposed in the housing and movable between open and closed positions. The crosslink valve is configured to selectively fluidly connect the second volume to the fluid connection. A crosslink line is fluidly connected to the first volume of the first air spring and the fluid connection on the second air spring. A controller is in communication with the crosslink valve. The controller is configured to command the crosslink valve between the open and closed positions in response to an input.

An air suspension system includes an air supply system block including one or more air spring valves, where the one or more air spring valves are disposed within the air supply system block, the air supply system block having a valve block housing. The system further includes the air supply system block pneumatically coupled with one or more air springs, and at least one reservoir coupled with the air supply system block, at least one motor and pump disposed within the air supply system block. The air suspension further includes fast down leveling valves disposed within the air supply system block.