Abstract: A spring strut having a delayed bleed. The spring strut includes a non-return valve arranged parallel to the throttle such that the flow of oil can pass through the non-return valve from the low-pressure chamber in the direction of the pump cylinder.

Abstract: A torsional vibration damper for a lockup clutch of a hydrodynamic clutch device has a drive-side damper element which is in an operative connection with a turbine shell and a driven-side damper element which is connected with the drive-side damper element via a damping device having at least one energy accumulator acting in the circumferential direction and is in a working connection with a turbine hub. The drive-side damper element is constructed as a planetary carrier for at least one gear unit element of a planetary gear set, while the driven-side damper element acts as another gear unit element of the planetary gear set.

Abstract: A turbine wheel arrangement for a hydrodynamic torque converter comprises an outer shell connected with a turbine wheel hub for common rotation and a plurality of blades arranged successively along the circumferential direction at the outer shell. A side of the blades remote from the outer shell is connected to an inner shell so that fluid flow channels are formed between adjacent ones of the blades together with the outer shell and the inner shell. At least one of the blades has an outer blade area lying closer to the outer shell that has a blade contour adapted to a first operating state, especially a starting operation, of a torque converter and an inner blade area lying closer to the inner shell that has a blade contour adapted to a second operating state, especially a driving state, of the torque converter.

Abstract: A piston/cylinder unit includes a working cylinder, a piston attached to a piston rod and arranged so that it is axially movable in the working cylinder, and a fastening element threaded into a threaded bore of the piston rod. The bore in the piston rod includes a tapered surface which widens outward starting from the diameter of the thread and the fastening element has a corresponding diminishing tapered surface arranged on a collar which diminishes from the outside to the diameter of the thread.

Abstract: A hydrodynamic torque converter is constructed with a converter circuit which comprises at least an impeller wheel, a turbine wheel and a stator wheel. An inner wall connecting the individual blades is provided at both the impeller wheel and at the turbine wheel. The inner walls form an inner torus. The radially inner ends or the radially outer ends of the inner walls have extensions axially toward the other wheel. The extension of the front one of these walls, considered in the direction of flow, has a lengthening extending toward the other wheel, by which lengthening the extension overlaps the extension at the other wheel by a predetermined axial length with a predetermined radial offset in the direction of flow.

Abstract: The invention relates to a spring-and-damper unit with an external storage device for installation between a vehicle body and a wheel guidance part. To create the greatest possible supporting length for the piston rod in a given installation space, the storage device is preferably connected to a spring plate, on which rests a carrying spring embodied as a coil spring, while the spring plate is arranged in a pressure-tight fashion on the cylinder or a container surrounding the cylinder. The interior of the cylinder or the container is hydraulically connected to the storage device via a connecting channel in the spring plate.

Abstract: A housing component for a hydrodynamic clutch device, especially a hydrodynamic torque converter, possesses a friction surface region for a converter lock-up clutch of the clutch device on a first side which is positionable for facing the interior of the clutch device. This housing component is formed by, at least in the region of the friction surface region, the reshaping of a metal component. On a second side of the housing component lying opposite to the first side a surface structuring is formed in a region corresponding to the friction surface region by reshaping of the metal component to form the friction surface region.

Abstract: A hydropneumatic spring, which is preferably articulately arranged between a vehicle body and a wheel guiding part in motor vehicles, has a fluid-filled cylinder which is entered by an outwardly sealed piston rod having a piston connected at the internal end. For altering spring force-deflection progressivity characteristic, a first working chamber of the cylinder is in constant hydraulic connection with a first spring energy store device and a second working chamber of the cylinder is in constant hydraulic connection with a second spring energy store device via a second valve device via a first valve device. In a mid spring deflection range, a second spring energy store device is connected via a second valve device and a bypass to the first spring energy store device. The bypass includes an axially extending channel arranged between the first working chamber and the second working chamber.

Abstract: A drive arrangement for a motor vehicle includes an internal combustion engine with a crankshaft which is selectively connectable to an output drive shaft via an interposed clutch system. The clutch system has at least two flywheel masses which are rotatable relative to each other. A first flywheel mass comprises at least one primary flange which is permanently connected to the crankshaft. The clutch system also includes an electric machine which has a rotor with a rotor carrier, the electric machine being arranged in the clutch system so that the primary flange is part of the rotor carrier.

Abstract: A separating piston for a vibration damping system with a cylinder which is filled partly with damping fluid and partly with pressure gas and with a separating piston which is arranged in the cylinder and divides the pressure gas space from the fluid space in a sealing manner via a seal. The separating piston is guided in the cylinder by a guide, wherein the separating piston is provided with an additional guide between the seal and the end side facing the pressure gas space. A chamber which is open relative to the inner wall of the cylinder is arranged in the area between the seal and the additional guide.

Abstract: A lip seal for sealing cylindrical surfaces of a cylindrical housing and a axially movable piston within the housing includes an annularly arranged supporting bead on its outer diameter to improve its tilting behavior around a central axis running annularly through the center of the lip seal. A first sealing lip of the lip seal forms a seal on the cylindrical surface of the housing and a second sealing lip forms a seal on the cylindrical surface of the piston. The supporting bead, in the installed state, forms a contact seal in the cylindrical part of the housing. Together with the contact seals of the first sealing lip and the second sealing lip, the supporting bead lends stability against tilting to the lip seal. Advantageously, a good sealing quality of the lip seal is maintained during an increased number of load changes.

Abstract: A vibration damper with variable damping force, including a cylinder, in which a piston with a piston rod is arranged in axially movable fashion, whereby an adjustable damping valve is activated in dependence on the deflection distance and the activation of the adjustable damping valve is carried out via a stabilizer. The vibration damper has further damping valves, whose damping effects are independent of activation by the stabilizer. The adjustable damping valve, during equilateral deflection and rebound travel of the piston rod on a vehicle axle or unilateral rebound travel, has a damping force setting that is smaller than the damping force of the further damping valves of the vibration damper.

Abstract: A device for a clutch which is subject to wear brought about by friction, especially for motor vehicles, for signaling that a wear limit has been reached. The clutch has a pressure plate which is connected, via tangential leaf springs, with a clutch housing so as to be fixed with respect to rotation relative to it, but so as to be axially displaceable, and by way of which a clutch disk provided with friction linings can be pressed against a flywheel of an internal combustion engine. The device has two structural component parts which can be clamped against one another, one of which structural component parts is arranged so as to be movable in the radial direction. A clamping of the structural component parts can be canceled when the wear limit is reached, wherein a movable structural component part springs into another radial position and remains there.

Abstract: Self-pumping hydropneumatic shock strut with internal level regulation for motor vehicles with a work cylinder which is filled with oil and acted upon by pressure by at least one gas cushion arranged in a high-pressure chamber which acts as a spring. The work cylinder is divided into two work spaces by a work piston carried by a hollow piston rod. The work piston has a piston pump which is driven by the spring movements and delivers oil from a low-pressure chamber in the work space connected with the high-pressure chamber. The pump cylinder of the piston pump is formed by the hollow piston rod. A hollow pump rod which is fastened to the work cylinder and carries a suction valve at its front end penetrates into the piston rod and the bore of the hollow pump rod is connected with the low-pressure chamber.

Abstract: A pressure plate for a friction clutch has a friction-surface region which can be pressed against a friction-lining arrangement of a clutch disk or the like. The pressure plate, in the friction-surface region, is formed at least partially from a first material which provides rapid dissipation of heat generated by friction, and in a body region which adjoins the friction-surface region, is formed from a second material which has a high heat absorption capacity for the heat dissipated from the friction-surface region.

Abstract: A thrust plate assembly for a motor vehicle friction clutch with automatic wear compensation includes a housing fastened to a flywheel for common rotation about an axis of rotation. An axially displaceable pressure plate is connected with the housing so as to be substantially fixed with respect to rotation relative to it and has a friction face on a side facing the flywheel. An axially acting spring device presses the pressure plate toward the flywheel via an axially acting adjusting mechanism and accordingly can clamp a driven part arranged between the pressure plate and the flywheel. At least one play sensor is guided in the thrust plate assembly so as to be substantially axially displaceable against friction. A wear detection portion of the play sensor is axially displaceable in the thrust plate assembly in response to wear and an actuation portion of the play sensor cooperates with the adjusting mechanism for allowing an axial lengthening of the adjusting mechanism in response to wear.

Abstract: An actuating device for a friction clutch arranged in the drive train of an automobile between an internal combustion engine and a gear in a casing bell. The actuating device includes a disengagement bearing arrangement and a positioning servo arrangement, having a pressure-medium power cylinder arrangement, for the disengagement bearing arrangement, the positioning servo arrangement having a control valve connected to a pressure-medium source. The control valve includes a valve arrangement which can be changed over between at least two control states as a function of an actual value representing the axial position of the disengagement bearing arrangement and of a command variable representing a desired position of the disengagement bearing arrangement.

Abstract: Navigation of a vehicle in a traffic network is optimized by a terminal, a traffic information center and a computer-assisted navigation method for a vehicle equipped with a terminal in a traffic network, using a digital map of the traffic network, in which a user requests a desired destination from the terminal and in which a route to the destination is determined, taking into account previous driving habits.

Abstract: A friction clutch for motor vehicles has a casing which can be connected in a rotationally fixed manner to a driven flywheel mass. A pressure plate is arranged inside the casing with a pressure spring supported between the clutch casing and the pressure plate so that the pressure plate presses a clutch disk, which is provided with friction linings, onto the flywheel mass. The pressure spring, during engagement of the clutch, exerts a varying pressure force on the pressure plate. The friction clutch also having a device which acts on the pressure plate and varies essentially proportionally to the force of the pressure spring to force of the pressure plate.

Abstract: An adjustment ring of a motor-vehicle clutch is supported on bearing surfaces of supporting protrusions of a pressure plate by one of first and second supporting surfaces on the adjustment ring. The second supporting surface is axially closer to the pressure plate than the first supporting surface. The bearing surfaces and the first and second supporting surfaces are aligned parallel to the plane of rotation of the pressure plate. The first and second supporting surfaces are each connected via an oblique surface so that the adjustment ring is manually rotatable relative to the pressure plate between a first position where the first supporting surface bears on the bearing surface and a second position where the second supporting surface bears on the bearing surface.