Abstract: A self-pumping hydropneumatic spring strut with internal leveling is provided for use in motor vehicles having an oil filled working cylinder, which is under the pressure of at least one gas cushion arranged in a high pressure chamber and acting as a spring. The high pressure chamber is connected to a working space, wherein a bleed opening forms a flow connection between the working space and the low pressure chamber. The bleed opening can be closed as a function of the position of the working piston in the working cylinder. The spring strut is assigned an actuator which displaces the spring strut in the vertical direction. The actuator can displace the motor vehicle to a plurality of displacement distances without requiring any electrical or electronic control, complex external leveling devices, or displacement detection systems.

Abstract: A friction clutch, in particular for a motor vehicle, has a wear state indicating arrangement for indicating a state of wear of friction linings of the friction clutch.

Abstract: The invention is directed to a multiple-clutch device, such as a double-clutch device, for arranging in a drivetrain of a motor vehicle between a drive unit and a transmission, wherein the clutch device has a first clutch arrangement associated with a first transmission input shaft of the transmission and a second clutch arrangement associated with a second transmission input shaft of the transmission for transmitting torque between the drive unit and the transmission. According to one aspect of the invention, it is suggested that a bearing arrangement is associated with at least one of the clutch arrangements, wherein the latter is supported or can be supported so as to be relatively rotatable by means of the bearing arrangement on at least one of the transmission input shafts, at least one of which is constructed as a hollow shaft and a shaft constructed as a hollow shaft encloses the other shaft, preferably at least at the radial outer transmission input shaft which is constructed as a hollow shaft.

Abstract: A winding body has a winding area for receiving a winding, which winding area is formed by a winding carrier and two legs which define the winding area in axial direction and are connected with the winding carrier. A temperature sensor for measuring the temperature in the winding is arranged in the area of the winding carrier.

Abstract: An electromagneto-mechanical converter has winding teeth composed of a material which is suitable for carrying a magnetic flux of a magnetic circuit. The winding teeth each have a winding support element for accommodating a winding, an attachment region for attaching the winding tooth to a yoke of the electromagneto-mechanical energy converter, and a transition element which tapers from the winding supporting element to the attachment region and is immediately adjacent to the yoke of the electromagneto-mechanical converter. The attachment region has a magnetic reluctance which is greater than that of the winding supporting element and the transitional element owing to a change in the grain structure of the material, so that the magnetic flux which enters the transitional element from the winding supporting element is substantially passed from the transitional element into the yoke, and the attachment region is substantially free of magnetic flux.

Abstract: A suspension system for motor vehicles with level regulation for adjusting a predetermined height of the vehicle body includes at least one piston-cylinder unit with a work cylinder, a piston rod and a damping piston having damping valves. A pump is connected between an oil reservoir and the piston cylinder unit via corresponding inlet and outlet lines. The pump is driven by a drive unit and the level height is detected by a sensor which acts on the drive unit or on a regulating valve via evaluating electronics.

Abstract: Protective tube for a piston-cylinder assembly of the type including a piston rod located with freedom of axial movement in a cylinder, the rod also having a section which extends outside the cylinder. A retaining element for the protective tube is attached to the piston rod, which retaining element includes a multi-part connecting ring, the parts of which are installed in the radial direction toward the piston rod and are operatively connected to it. The protective tube is connected to the connecting ring parts so that these parts come together to form a connecting ring which is braced at least in the radial direction.

Abstract: An actuating device for a friction clutch arranged in the drive train of a motor vehicle. The actuating device has a positioning servo arrangement with a pressure-medium power cylinder arrangement which acts on a disengagement bearing arrangement. There is provision, for assigning to a pressure-medium subsystem, made up of the pressure-medium power cylinder arrangement and a control valve of the positioning servo arrangement, a pressure compensating orifice which, at least when the positioning servo arrangement is in a holding state, permits a defined pressure-medium pressure compensating flow, in order to influence at least one positioning behavior of the positioning servo arrangement.

Abstract: A hydrodynamic coupling device having a housing which is, or can be, filled with hydraulic fluid, a turbine wheel which is rotatably arranged in the housing and is, or can be, connected to an output shaft for joint rotation, and a sliding bearing arrangement which the turbine wheel is rotatably mounted relative to the housing, and which has a hydraulic fluid channel arrangement for the passage of hydraulic fluid from radially outside to radially inside relative to the region of the output shaft, or vice versa.

Abstract: A multiple-clutch device, possibly a double-clutch device, for arranging in a drivetrain of a motor vehicle between a drive unit and a transmission. the clutch device has a first clutch arrangement associated with a first transmission input shaft of the transmission and a second clutch arrangement associated with a second transmission input shaft of the transmission for transmitting torque between the drive unit and the transmission. The clutch arrangements are constructed as plate clutch arrangements, one of which has a greater effective friction radius than the other.

Abstract: Filling valve for a gas bag installed in a space bounded by rigid walls, where the forces of a liquid medium, which is under pressure and which flows into and out of this space, act on this space. The gas bag serves as a compensation space, is filled with gas, and can be filled through a filling valve, which has an access channel aligned with an opening in the rigid wall. The access channel is located in a connector part connected to the gas bag, the connector part also being connected to a guide part resting against the inside surface of the rigid wall, the access channel being in effective connection with the opening in the rigid wall via this guide part.

Abstract: An electrical machine with a cooling system for the removal of waste heat includes a stator laminated core having a plurality of first sheet metal laminations stacked to form a first core part having a plurality of axial passages arranged on a reference circle which is concentric to a central axis, and a plurality of second sheet metal laminations stacked to form a second core part having a plurality of axial recesses which are also on the reference circle. The second core part abuts the first core part so that the passages are axially aligned with the recesses. Each passage receives a cooling duct which is connected to an adjacent cooling duct by a return element having radially extending legs received in respective axial recesses, the legs being connected by a peripherally extending center section. Where the stator laminated core is located centrally of a rotor hand has a concentric internal space, the center section of each return element is located in the internal space.

Abstract: A hub for a motor vehicle clutch includes a driver and a ring element arranged on the driver and constructed as a sheet metal part with a profile that receives torque to be conducted into a driven shaft by friction facings via the driver. The driver is also made from a sheet metal part. A radial outer area of the driver has a shape corresponding to the ring element. The hub has a low weight and is produced economically.

Abstract: Pressure vessel which is filled with at least one medium which is pre-stressed by a mass of gas enclosed in a deformable enveloping body, in particular for the volume equalization in a vibration damper, comprising a wall in which a pressurized gas is enclosed. The wall is at least partially formed from a gas-tight barrier layer and the enveloping body has sections which are aligned at an angle to one another in the circumferential direction, the wall having an impressed transition between the sections, which are aligned at an angle to one another. The wall may additionally be designed with an expansion profile.

Abstract: The invention is directed to a multiple-clutch device, such as a double-clutch device, for arranging in a drivetrain of a motor vehicle between a drive unit and a transmission, wherein the clutch device has a first clutch arrangement associated with a first transmission input shaft of the transmission and a second clutch arrangement associated with a second transmission input shaft of the transmission for transmitting torque between the drive unit and the transmission. It is suggested that a bearing arrangement is associated with at least one of the clutch arrangements, wherein the latter is supported or can be supported so as to be relatively rotatable by means of the bearing arrangement on at least one of the transmission input shafts, at least one of which is constructed as a hollow shaft and a shaft constructed as a hollow shaft encloses the other shaft, preferably at least at the radial outer transmission input shaft which is constructed as a hollow shaft.

Abstract: A first clutch area produces a first torque-transmitting connection between a drive element and a first driven element, and a second clutch area produces a second torque-transmitting connection between the drive element and a second driven element. A common engaging/disengaging mechanism actuates the first clutch area and the second clutch area to produce and to nullify the first and second torque-transmitting connections.

Abstract: A first clutch area produces a first torque-transmitting connection between a drive element and a first driven element, and a second clutch area produces a second torque-transmitting connection between the drive element and a second driven element. A common engaging/disengaging mechanism actuates the first clutch area and the second clutch area to produce and to nullify the first and second torque-transmitting connections.

Abstract: An elastomeric seal seals a pipe which is held in a push-in part of a plug-in coupling relative to a cylindrical interior surface of a housing of the plug-in coupling, into which the push-in part is pushed together with the pipe. The seal is in prestressed contact with the interior surface of the housing via an outward-facing annular lip and with the pipe via a radially inward-facing annular lip. The elastomeric seal is connectable by positive fitting to the push-in part, this positive fit being lockable by the assembly of the pipe to form a non-releasable connection, the pipe having a cylindrical and uninterrupted exterior circumference in the region of the seal. The joint between the seal and the push-in part is simple to assemble and is lockable by the insertion of the pipe. The connection of the seal to the push-in part may be additionally secured, with certain changes of diameter, by compression of the web-shaped connection between them.

Abstract: A cooling arrangement for an electrical machine—for example, a permanent-field synchronous machine of a vehicle. The electrical machine is connected to the engine block of the vehicle. In order to ensure cost-effective cooling of the electrical machine, the electrical machine includes a support element, and the engine block includes a cooling element. At least a region of the electrical machine is connected via the support element to the cooling element of the engine block such that the heat generated during operation of the electrical machine dissipates thermally into the engine block.

Abstract: The invention is directed to a multiple-clutch device, such as a double-clutch device, for arranging in a drivetrain of a motor vehicle between a drive unit and a transmission, wherein the clutch device has a first clutch arrangement associated with a first transmission input shaft of the transmission and a second clutch arrangement associated with a second transmission input shaft of the transmission for transmitting torque between the drive unit and the transmission. According to one aspect of the invention, it is suggested that at least one of the clutch arrangements has an actuating piston defining a pressure chamber for actuation, preferably for engagement of the clutch arrangement by means of a pressure medium, preferably a hydraulic medium, wherein the actuating piston divides the pressure chamber from an associated centrifugal force pressure compensation chamber which receives a pressure compensation medium.