Abstract: A device for damping vibrations may comprise a hollow damper tube, a piston rod with a piston fastened thereto, at least one spring plate, and at least one securing element. The piston may be disposed within the damper tube, and the spring plate may be disposed outside the damper tube. To achieve a reliable connection between the spring plate and the damper tube in a cost-effective manner, the spring plate may be connected to the damper tube in both a force-fitting manner and a form-fitting manner. The present disclosure further concerns motor vehicles that employ such devices, as well as methods for fastening spring plates to damper tubes.

Abstract: A method for operating a controllable shock absorber may involve damping movement of a valve body by loading the valve body with a back pressure on an outflow side. Further, the controllable shock absorber may include a cylinder tube, a piston within the cylinder tube that divides the cylinder tube into two working spaces and includes a couple fluid leadthroughs connecting the working spaces, and first and second valve assemblies for damping piston movement in first and second actuating directions that are disposed on the leadthroughs. Each valve assembly may have a pilot control chamber and a valve plate that is either seated on or spaced apart from a valve seat in closed and open valve positions. Each valve plate can be prestressed closed by pressure loading the pilot control chamber. The pressures of the pilot control chambers can be set by a pilot control valve that comprises a movable valve body. As a result, an outflow cross section between the pilot control chambers and the working spaces can be set.

Abstract: A piston/damper tube assembly may include a damper tube with damping fluid, a movable piston rod, a working piston, a controllable 4-way bottom valve with a control member, and a compensation space. Two flow passage ways of the bottom valve connect the working space remote from the piston rod via the control member to the compensation space. Two control ways of the bottom valve load the control member on a first side with a pressure of the piston rod-side working space and on a second side with a pressure of the compensation space. The control member may control the flow passage ways in a manner dependent on the pressure of the piston-rod-side working space that prevails on the control member on the first side via a fluidic connection, and on the pressure of the compensation space that prevails on the control member on the second side via an opening.

Abstract: An air spring connecting device for mounting an air spring strut on a vehicle may include an air spring support bearing having a head bearing receiver, a head bearing having at least one cylindrical outer surface, and a piston rod that is axially guided through the head bearing and is sealed in an airtight manner relative to the head bearing. The head bearing may be positioned in the head bearing receiver of the air spring support bearing positioned coaxially relative to the piston rod. An airtight connection may be formed between the head bearing receiver and the head bearing. A press connection element may be positioned in direct contact with the head bearing receiver and the head bearing. A sealing element may be positioned in a region of the head bearing receiver between the air spring support bearing and the head bearing.

Abstract: A spring plate for supporting a vehicle suspension spring, with a surface facing toward the vehicle suspension spring and with at least one support point, wherein the spring plate has a region which extends from the surface in the direction of the vehicle suspension spring and forms the support point, and wherein a sheet-metal element acting as a corrosion protection element is fastened to the extended region and is in contact with the vehicle suspension spring in all operating states.

Abstract: A vibration damper may include an external tube and at least one internal tube. The external and internal tubes may be disposed in a coaxial manner relative to one another. An annular gap may exist between the external tube and the internal tube, and the annular gap may be fluidically connected to the internal tube. The annular gap may form a balance chamber for receiving damper oil and damper gas for preloading of the damper oil in the balance chamber. The vibration damper may further include a separating element disposed in the balance chamber. The separating element may be axially displaceable and may separate the damper oil from the damper gas in a fluid-tight manner.

Abstract: An adjustable vibration damper for a vehicle may include an outer tube, an intermediate tube, and an inner tube arranged coaxially. A concentric compensation chamber between the outer tube and the intermediate tube may receive a hydraulic fluid and a gas. A piston rod may include a piston disposed movably in the inner tube and dividing an interior of the inner tube into first and second working chambers. The adjustable vibration damper may also include first and second damper valves arranged on an outer wall. The first working chamber may be fluidically connected to the compensation chamber by the first damper valve for adjustment of a pressure stage, and the second working chamber may be fluidically connected to the compensation chamber by the second damper valve for adjustment of a traction stage.

Abstract: A vibration damper, which can be utilized in a chassis of a vehicle, may comprise a damper tube and a working piston that is guided in a longitudinal axis over an inner side of the damper tube. The vibration damper may also include a reinforcing sleeve that is positioned on an outer side of the damper tube. A receptive fork for attachment to the chassis can be arranged on the reinforcing sleeve. The reinforcing sleeve may be delimited in a direction of the longitudinal axis by a peripheral edge. In a region of the peripheral edge, a sealing element enclosing the outer side of the damper tube may be accommodated in the reinforcing sleeve. The peripheral edge may have a plastically deformed reshaping section that engages around the sealing element.

Abstract: A controllable vibration damper may include a cylinder tube with hydraulic fluid, a piston movable axially within the cylinder tube along an axis and that divides the cylinder tube into two working spaces, a piston rod parallel to the cylinder tube axis and connected at one end to the piston, fluid passages from one working space into another working space, a first valve subassembly on a first fluid passage for damping piston movement in a first direction, and a second valve subassembly on a second fluid passage for damping piston movement in a second direction. Each valve subassembly may include a valve disk seated on a valve seat in a closed position and spaced apart from the valve seat in an open position, as well as a pilot chamber containing an adjustable pressure that pushes the valve disk into the closed position.

Abstract: A controllable shock absorber may include a cylinder tube with hydraulic fluid, a movable piston that divides the cylinder tube into two working spaces, and a piston rod connected to the piston. Two fluid leadthroughs in the piston may connect the two working spaces. Valve assemblies for damping piston movement in actuating directions may be arranged on the leadthroughs. Each valve assembly may have a pilot control chamber and a valve plate movable between open and closed positions. The valve plate can be prestressed into the closed position by pressure loading the pilot control chamber. Pressures in the pilot control chambers can be set by a pilot control valve having a valve body that is movable between open and closed positions. An outflow cross section between the pilot control chambers and the working spaces is settable.

Abstract: A stilt part may be utilized for a suspension damper strut of the wheel suspension of a vehicle. The stilt part may comprise a shank portion extending along a longitudinal axis of the stilt part and a connecting portion adjoining an end of the shank portion. The connecting portion may be configured to connect a lower link of the wheel suspension. The shank portion may include a convex region that is bent away from the longitudinal axis. The convex region may provide clearance for a drive shaft of a wheel. The shank portion may be formed from at least two shell elements that are connected, in some cases welded, together along at least one longitudinal seam.

Abstract: A decoupling bearing for a suspension strut or a pneumatic suspension strut may include a suspension strut cup and a connecting element that can be connected to a vehicle body. A damping element may be arranged between the suspension strut cup and the connecting element. The suspension strut cup may be connected to the connecting element by the damping element. Further, the damping element may be adhesively bonded to the connecting element and the suspension strut cup in a force-transmitting manner, and/or the damping element may be adhesively bonded to the connecting element and an intermediate element in a force-transmitting manner. The intermediate element may be connected to the suspension strut cup.

Abstract: A vibration damper for a motor vehicle may comprise a damper outer tube, a damper inner tube having a lateral surface of the damper inner tube and arranged coaxially in the damper outer tube, a separating plate arranged coaxially in a region of the lateral surface of the damper inner tube, and a sealing element arranged coaxially circumferentially on the damper inner tube on the separating plate. In a region of the separating plate arranged coaxially on the lateral surface of the damper inner tube, a groove for the separating plate may be formed on the lateral surface of the damper inner tube. The separating plate may be arranged in the groove, and the connection between the groove and the separating plate may be press fit, at least in the radial direction.

Abstract: The invention relates to an air spring (1) for a vehicle, comprising an air-spring module (2) having an air-spring module connection element (3) as connecting part with the load to be suspended, and air-spring module bellows (4), wherein the air-spring module bellows (4) are connected, on the side facing the air-spring module connection element (3), to the air-spring module connection element (3) at least in an airtight manner, a rolling piston (8), wherein the air-spring module (2) has at least one connecting element (5) for at least airtight connection of the air-spring module (2) to the rolling piston (8), wherein the air-spring module bellows (4) are arranged in an airtight connecting manner between the air-spring module connection element (3) and the connecting element (5), wherein the connecting element (5) is arranged directly adjacent to the rolling piston (8) at least in certain sections and the connecting element (5) is placed onto the rolling piston (8), and wherein one or more guide rib(s) (7

Abstract: A vibration damper may be used in connection with a motor vehicle. The vibration damper may include a hydraulic device for damping vibrations. The vibration damper may also include at least one shut-off valve connected fluidically to the hydraulic device at the vibration damper. The shut-off valve may be capable of being connected fluidically to at least one of a pump or a filling apparatus for filling the vibration damper with hydraulic fluid. The shut-off valve may comprise a valve housing with a first connector for the pump, a second connector for the filling apparatus, and a third connector for the hydraulic device.

Abstract: A suspension strut for a wheel suspension of a vehicle may have a vibration damper, a supporting spring that partially surrounds an outer tube of the vibration damper and is supported by a spring collar, and a lifting device for height adjustment of the vehicle. The lifting device may comprise a hollow piston and a cylinder that are arranged concentrically around the outer tube. The hollow piston may be guided axially between the outer tube and the cylinder and is connected to the spring collar to adjust a base point of the supporting spring. The hollow piston may comprise a stripping and sealing element that lies against the vibration damper.

Abstract: A hydraulic vibration damper, in particular for a vehicle chassis, includes a cylinder tube for receiving a hydraulic fluid. A piston is axially movable within the cylinder tube along a cylinder tube axis and subdivides the cylinder tube into two working chambers. A piston rod is oriented parallel to the cylinder tube axis and is connected to the piston. At least one valve assembly for damping the piston movement in a direction of actuation is arranged at a fluid leadthrough. A bypass duct includes a sub-duct provided in addition to the fluid leadthrough between the two working chambers. A valve arrangement with continuously adjustable damping force is provided which regulates the throughflow through the fluid leadthrough and the sub-duct. The sub-duct includes a throttling mechanism, having a throttle, and a non-return valve. The throttle and the non-return valve of the sub-duct are arranged in series.

Abstract: A regulable vibration damper, which may be utilized in a vehicle chassis, for example, may comprise a cylinder barrel that contains hydraulic fluid in sealed-off fashion, a piston that is axially movable within the cylinder barrel along a cylinder barrel axis and that divides the cylinder barrel into two working chambers, and a piston rod oriented parallel to the cylinder barrel axis and that is connected to the piston. The piston may comprise at least two fluid leadthroughs that connect the working chambers. A first valve assembly for damping piston movement in a first actuation direction may be arranged at a first fluid leadthrough, and a second valve assembly for damping piston movement in a second actuation direction may be arranged at a second fluid leadthrough. In the piston, one or more bypass ducts with throughflow cross sections of different size for the two throughflow directions may form fluidic connections between the two working chambers that bypass the vestibules.

Abstract: A vibration damper for a motor vehicle may include a damper tube, a piston rod that moves in the damper tube, a working piston attached to the piston rod that divides the damper tube into two working spaces, and first and second damping valves each with an adjustable damping force. Damping liquid may pass through the first damping valve as the piston rod retracts and through the second damping valve as the piston rod extends. Each damping valve may include a valve body that can be moved by a separate, controllable drive device between a closed position and an open position to set a throughflow cross section of each respective damping valve. The valve bodies may be loaded by restoring means counter to an actuating force of the drive device. A first of the restoring means may load a first of the valve bodies into its open position, and a second of the restoring means may load a second of the valve bodies into its closed position.

Abstract: A receiving arrangement may be utilized by a lower end of a carrier spring on a damper tube of a shock absorber of a suspension strut, in particular for a vehicle. The receiving arrangement may include a bearing unit by way of which the damper tube can twist relative to the carrier spring about a longitudinal axis of the suspension strut. The bearing unit may include an upper bearing ring and a lower bearing ring, which bearing rings may be configured so they can slide on each other to form an axial bearing and a radial bearing between the carrier spring and the damper tube.