Abstract: The invention relates to a starting unit for use in drive systems, especially of motor vehicles, which comprises a hydrodynamic speed/torque converter including at least one pump wheel, one turbine wheel and one stator, and comprises a torque converter lockup clutch. The output ends of the torque converter lockup clutch and of the speed/torque converter are interconnected in a rotationally fixed manner. In addition, a device for damping vibrations is provided which comprises at least one torsional vibration damper with hydraulic damping.

Abstract: The invention relates to a hydrodynamic-mechanical multi-speed compound transmission comprising a transmission input shaft (E) and an output. Said transmission contains a hydrodynamic transmission part (2) having a hydrodynamic speed/torque converter (3), and contains a mechanical transmission part (4) connected downstream from said hydrodynamic transmission part (2) in a spatial manner relative to the transmission input shaft (E). The inventive transmission also comprises at least one speed/torque converter device (5).

Abstract: An internal geared machine capable of forward and reverse operation in a closed circuit having a pinion and an internal toothed ring gear meshing with the pinion and disposed in a housing. A filling comprising two identical filler pieces fills a sickle-shaped space between the pinion and ring gear and a single stop pin mounted in the housing supports both of the filler pieces by their front ends. A pair of axial discs are seated on the pinion shaft on respective sides of the pinion and axial pressure fields and control fields provide opposing pressures against the axial discs.

Abstract: A process for the assembling of a gear component having a gear housing which has a substantially cylindrical interior space for the reception of individual gear elements; at least two bar-form guide elements which, as viewed in an axial direction, extend over and are adjacent to at least a part of the axial extent of the cylindrical interior space and on which there are mounted a gear element. The bar-form guide elements are adjacent to the cylindrical interior space and outside of the zone having the greatest dimensions of the cylindrical interior space in the height direction. The individual gear elements are threaded successively from one housing end onto the guide elements and are slid into their installation position in the gear housing.

Abstract: A method for filing a retarder with an operating fluid through a valve connected to a fluid reservoir having air pressure Pv and conveying an operating fluid with an actuating pressure Py in the retarder. The method comprises: after starting the retarder during a first time interval T1, an overshoot actuating pressure Py(U) lying above nominal pressure PyNENN for the nominal braking torque to be regulated is adjusted. In a second time interval T2, overshoot actuating pressure Py(U) is reduced to a nominal pressure PyNENN.

Abstract: A motor-pump unit including an electric motor and a pump. The pump is concentrically surrounded by the rotor/stator of the motor. The rotor of the electric motor is U-shaped, viewed in an axial section. The cross-piece of the “U”, in the region of the common axis, is provided with an interior toothing. The shaft of the pump includes a pinion that meshes with the interior toothing of the cross-piece of the “U”.

Abstract: The invention relates to a thrust ring, in particular an axial bearing thrust ring, for forming a running surface for rolling elements, for use in bearing systems for universal joints of cardan shafts. The ring has a first planar end side and a second end side, having two surface regions on the second end side which have been machined symmetrically with respect to a first axis of symmetry SD of the thrust ring, and also in terms of its profile in the circumferential direction as seen starting from the first axis of symmetry, in the circumferential direction, to a further, second axis of symmetry SSD which runs at right angles to the first axis of symmetry SD.

Abstract: The invention related to a hydrodynamic-mechanical multi-speed compound transmission has at least four speeds. The transmission includes a transmission input shaft and a transmission output shaft as well as a hydrodynamic transmission part. The hydrodynamic and the mechanical transmission parts are connected in series when seen from the power flow direction. Mechanisms are provided for by-passing the hydrodynamic transmission part during power transmission. The hydrodynamic transmission part includes at least one hydrodynamic speed-torque converter. The mechanical transmission part includes a mechanical speed-torque converting device with at least two planetary gear sets. The mechanical transmission part is designed in such a way that transmission ratios in the individual gear steps cause gear step jumps of phi ≦1.45 between two successive gear steps of the individual speeds.

Abstract: A drive unit includes a motor, a hydrodynamic retarder, at least one pump, at least one feed line for feeding operating medium to the retarder, and at least one bypass line which conveys operating medium past the retarder. A device for directing the flow of operating medium is arranged upstream of the retarder in the direction of flow. The device can feed the operating medium through the retarder via the feed line, feed the operating medium past the retarder via a bypass line, or divide the total flow of operating medium into at least two predetermined parts. A first predetermined part of the operating medium is fed through the retarder via the feed line. A second predetermined part of the operating medium is conveyed past the retarder via the bypass line.

Abstract: The invention relates to a method and a device for increasing the use of the braking moment of a retarder in an automobile. According to this method, the heat produced by the retarder during braking is dissipated using a coolant. The method is characterized in that at least one auxiliary consumer and/or at least one of the following devices of the cooling system—a connected fan, a connected thermostat, a coolant pump, a bypass-valve—is controlled in dependence on the mode of the operation of the retarder.

Abstract: The invention is relative to a series of gear motors for differing output volumes with at least two gear motors. Each gear motor has at least two intermeshing displacing elements, a first displacing element and a second displacing element in the form of gears. The individual gear motors of the series comprise substantially identical dimensions for the axial interval between the theoretical axes and between the theoretical axes of rotation of the two displacing elements, and a substantially identical gearing width in the form of a substantially identical axial extension of the gearing elements. The individual gear motors differ from each other at least as regards the size of the tip circle diameter of at least one of the two displacing elements.

Abstract: A flange yoke for a universal joint, two joint fork halves, each comprising a base component and a bearing component. The joint fork halves can be connected in a form-locking manner to one another in the region of their base component to form a flange. The base components have mutually complementary toothing in the region of the outer circumference on their coupling face, wherein the extension of a tooth trace of the toothing on the coupling face forms an angle of from >0 degrees to <180 degrees with a plane formed by the pin axis of a pin supported in a joint fork half and a joint fork axis coinciding with an axis of rotation of the joint fork. A second set of toothing is formed in the region of the joint fork axis on the mutually facing coupling faces of the base components. Extensions of these tooth traces are arranged at an angle of between 70 degrees and 110 degrees inclusive to the extension of a tooth trace of the first set of toothing.

Abstract: The invention is relative to a multi-speed gearbox comprising a gearbox input shaft and a gearbox output shaft, a first mechanical gearbox portion, means for coupling this first mechanical part to the gearbox input shaft, and a starting element. The invention further comprises a second mechanical gearbox portion comprising at least one planetary gear set. A first gearbox element of the second mechanical gearbox portion is coupled to the first mechanical gearbox portion and the second gearbox outlet shaft. The starting element is designed as a brake device and associated with a second gearbox element of the second mechanical gearbox portion. The first mechanical gearbox portion has means for carrying out the individual gear steps, which can be controlled in such a manner that the transmissions in first gear and in reverse gear can be determined by the second mechanical gearbox portion.

Abstract: A drive system for a vehicle, especially a non-guided vehicle, comprising at least one internal combustion engine, at least one generator, at least one electric drive motor and at least one torque converter, the torque converter being positioned between the drive motor and an output shaft leading to the vehicle axes. The drive system is characterized in that the drive motor is coupled with the converter in order to increase the torque conveyed to the vehicle axes by the drive motor via the output shaft at particular speeds or accelerations.

Abstract: The invention relates to a hydrodynamic clutch (1) comprising at least two impellers, as outer wheel (3), and an inner wheel (3). The inner wheel is equipped with an integrated synchronizer clutch (2) and is enclosed by a clutch shell (4) that is coupled to said outer wheel. The invention is characterized in that the clutch elements (6.1, 6.2) are formed by the inner wheel and by the clutch shell. Said inner wheel comprises at least two segments (8.1, 8.2, 8.3) that are displaceably mounted in a radial direction.

Abstract: The invention relates to a device for oscillation damping in rotating constructional elements, comprising two oscillating masses, a primary and a secondary mass, that can be rotated in a limited manner in relation to each other in the peripheral direction. The primary and the secondary masses can be coupled to each other by means of a damping and spring coupling. The device comprises means for accomplishing spring coupling including at least one spring device. The invention is characterized by the following features: each spring device comprises at least two spring elements; the spring element of the spring device are pretensioned; the spring element of a spring device are allocated to the primary and the secondary masses in such a way that the spring elements are supported against each other.

Abstract: A drive unit includes a motor, a hydrodynamic retarder, at least one pump, at least one feed line for feeding operating medium to the retarder, and at least one bypass line which conveys operating medium past the retarder. A device for directing the flow of operating medium is arranged upstream of the retarder in the direction of flow. The device can feed the operating medium through the retarder via the feed line, feed the operating medium past the retarder via a bypass line, or divide the total flow of operating medium into at least two predetermined parts. A first predetermined part of the operating medium is fed through the retarder via the feed line. A second predetermined part of the operating medium is conveyed past the retarder via the bypass line.

Abstract: A process for the control of switching or shifting processes in automatic gears with an allocatable control device for use in drivelines of vehicles with at least one drive motor, especially in the form of an internal combustion engine. In a first process step the actual values of certain travel-dynamics magnitudes for a given time point to are detected or calculated; in a second process step there is determined from the actual values a theoretically achievable connection speed of the drive motor, especially the internal combustion engine, in the actually shifted-in gear for each time step; in a third process step the ascertained connection speed is compared with limit speeds that can be stipulated in a characteristic field of the drive motor, in which in dependence on the comparison results in no switching process, or an upshift- or downshift- switching process is initiated by governing of the setting members actuatable for the carrying-out of a gear change.

Abstract: The invention relates to hydrodynamic machine, especially a hydrodynamic retarder, comprising a housing, components of the hydrodynamic machine being disposed within the housing, and a balancing element. The housing being constructed of a housing material having a coefficient of thermal expansion, which may be greater than a coefficient of thermal expansion at least one of the components. The balancing element having a coefficient of thermal expansion, which may be about that or greater than the coefficient of thermal expansion of the housing material. Also, the balancing element may be axially adjustable with respect to the housing to engage at least one of the components so as to equalize a gap during heating of the hydrodynamic machine.

Abstract: A gear constructional unit with a gear housing is provided. In order to make the effective diameter of the inner gear elements greater, as well as to ensure a simple assembly and exchangeability of the individual gear elements, for example coupling arrangements and planetary wheel sets, there are provided at least two bar-form guide elements, which extend, as viewed in an axial direction, over at least a part of the axial extent of the cylindrical inner space, on which a large number of gear elements are mounted in fixed position with respect to the housing. The bar-form guide elements are located adjacent to the cylindrical inner space, outside of a zone having the greatest dimension of the cylindrical inner space relative to the gear housing dimension, and are arranged in recesses in the gear housing which are connected with the inner space.