Abstract: A method and apparatus for damping torque output from a torque converter turbine to input to a transmission. The damper includes: (a) an input device for connection to an engine; (b) a first spring set having drive springs; (c) a second spring set having secondary springs; (d) a third spring set having parallel springs; (e) a floating apparatus; and (f) an output device. Springs of the first spring set are compressible in a forward direction toward the output device as a result of torque applied to the input device and compressible in a reverse direction toward the input device as a result of torque applied by the output device. The first and second spring sets are in series between the input device and output device during a first forward compression of the first spring set, and the series is in parallel with the third spring set between the input apparatus and output device during a second compression of the first spring set.

Abstract: In a method for operating a drive train for a motor vehicle, a torque is produced by means of an internal combustion engine as a function of an available torque set value signal and transmitted to drive wheels by means of a clutch. With the help of an electric motor, a closing force is applied, with which the clutch is held in a closed position against a restoring force. The electric motor is energized in such a way that a high current is used in the case of a high torque and a lower current is used in the case of a lower torque. The thermal load of the electric motor is determined and a load signal corresponding to the thermal load is produced. The load signal is compared with a load limit signal assigned to a permissible load range. If the load signal deviates from the load-limit signal, the torque of the internal combustion engine is limited.

Abstract: A plate link chain for a motor vehicle drive system. A number of link plates are hingedly connected by pairs of rocker members that extend transversely to the longitudinal direction of the chain. Curved contact surfaces are located on each of the rocker members and link plates, along which contact surfaces the rocker members and link plates contact each other to transmit power. The rocker members also include curved pitch surfaces along which rocker member pairs roll against each other to transmit power. The rocker members are shaped asymmetrically in the height direction and about a cross section plane extending in the longitudinal direction of the chain. Contact surfaces are provided on each of the upper and lower contact surface areas in the height direction of the rocker members.

Abstract: An hydraulic pressure reservoir having at least one pressure chamber with a fluid connection to a hydraulic circuit. The pressure chamber is formed between a movable partition member carried in a housing and having a pressure limiting valve, and a fixed partition. The movable partition member is in the form of a diaphragm spring.

Abstract: A device for hydraulic control of gas exchange valves of a reciprocating internal combustion engine which has slave cylinders, in operative connection with one or more gas exchange valves and, master actuators, in operative connection with at least one cam provided with a basic and cam profile of a camshaft that is rotatatly driven by the engine and can be hydraulically connected to the slave cylinders. The device also has a control device controlled by an actuating member, the device controlling the volume of hydraulic liquid fed to the slave cylinders, and at least one feed line, via which low pressure liquid from a pressure source can be fed to the device by means of at least one non-return valve. The actuators have displaceable vanes, a component carrying the vanes, and cells limited by walls. The vanes are in operative connection with the basic and cam profile of the cam.

Abstract: A process for testing models to see whether or not these models satisfy the modeling standard.

Abstract: The present invention relates to a torque transmission device in the drive train of a motor vehicle for torque transmission between a drive unit, in particular an internal combustion engine, a gearbox, and with a hydrodynamic torque converter. The torque converter lockup clutch comprises outer lamellae which work together with inner lamellae to connect to a driver plate which is connected to a torsional vibration damper. In order to provide a torque transmission device which has a long service life and can be produced economically, a coupling is fastened to the inner lamella carrier in such a manner that it cannot be turned, and to the radially inner edge area of the driver plate which bounds an annular space in which the radially inner edge area of the driver plate can be moved in the axial direction.

Abstract: A torque transmission device having a torque converter which is accommodated in the drivetrain of a motor vehicle, for transmitting torque between a drive unit and a transmission, has a converter housing that is rotationally mounted about an axis of rotation and is nonrotatably connected to the drive unit. The torsionally fixed connection between the drive unit and the converter housing includes a tubular connecting element that is located coaxially to the axis of rotation of the converter housing.

Abstract: The invention relates to a method for producing a friction lining. Said friction lining is wound in three layers with different winding ratios.

Abstract: A method for producing a friction lining. The friction lining is wound in three layers with different winding ratios.

Abstract: A method for preventing spinning of at least one drive wheel in a motor vehicle that has a dual clutch transmission, including the process steps of: a vehicle placed in a first gear unit of the dual clutch transmission; placement of a higher gear for the vehicle in a second gear unit of the dual clutch transmission; detecting whether the at least one drive wheel is spinning; disengaging the clutch that is assigned to the first gear unit, depending on whether spinning was detected; and engaging the clutch that is assigned to the second gear unit, depending on whether spinning was detected.

Abstract: A cutting punch sleeve including a bore with a first diameter at a first end and a second diameter, larger than the first diameter, at a second end, opposite the first end, and an outer surface with an indent. The bore is for receiving a cutting punch, the sleeve is locatable in a ball-lock assembly, and the indent is for engaging a ball in a ball-lock assembly to fix the sleeve in the ball-lock assembly. In one embodiment, at least a portion of the outer surface is matingly engageable with a surface for a recess in the ball-lock assembly. In another embodiment, a portion of the bore proximate the second end is shaped to matingly engage a head for the cutting punch.

Abstract: A twin clutch system for a transmission, particularly for a twin clutch transmission, including at least two clutches each having a clutch cover to which at least one disengaging system that actuates the clutches is fastened. According to the invention, a fastening element is provided that couples both coupling covers.

Abstract: A hydraulic arrangement for controlling a twin-clutch transmission of a motor vehicle. The hydraulic arrangement has a hydraulic energy source for supplying the hydraulic arrangement with hydraulic energy with a hydraulic medium; a pressure accumulator for storing the hydraulic energy; and a clutch cooling device for cooling clutches of the twin-clutch transmission with the hydraulic medium. A transmission lubrication process and/or a transmission cooling process for cooling and/or lubricating a transmission of the twin-clutch transmission with the hydraulic medium is/are carried out, in addition to a prioritization process for prioritizing the supply of the pressure accumulator before the clutch cooling, and the clutch cooling before the transmission lubrication and/or transmission cooling by means of the hydraulic medium.

Abstract: A force transmission device having a hydrodynamic component, disposed between an input and an output, comprising at least a pump shell and a turbine shell, forming an operating cavity in combination, with an actuatable clutch device for at least partially bridging the hydrodynamic component, comprising a clutch component for at least partially bridging the hydrodynamic component, comprising a first clutch component connected with the input and a second clutch component at least indirectly connected to the output, which can be brought into operative engagement with one another through an actuation device, with a vibration absorber disposed in the force flow at least subsequent to the actuatable clutch device, with a housing coupled with the input or with an element coupled non-rotatably to the input and coupled with the pump shell.

Abstract: A clutch unit including a housing fixed to a flywheel, in which two axially displaceable pressure plates are housed fixed to the housing to form a first and a second clutch, each provided with a clutch disk, whereby the clutches may be independently operated by means of lever arrangements, mounted to pivot on the housing, whereby each lever arrangement is connected to a pressure plate for opening and closing the corresponding clutch.

Abstract: A drive lug for a torque converter cover, including: a central portion including first and second substantially opposite sides, first and second substantially opposite ends, a threaded opening for receiving a fastener, and a first width between the first and second sides; and first and second wing sections extending length-wise from the first and second ends, respectively. The first and second wing sections have second and third widths, respectively. Respective minimum extents of the second and third widths are less than a minimum extent of the first width. In one embodiment, respective maximum extents of the second and third widths are less than a maximum extent of the first width.

Abstract: A device for creating a large transmission ratio for actuating drives the device comprising a first shaft supported rotatably about a first rotation axis, an eccentric supported by the first shaft, a transmission part, which is provided with a gear rim including a first gear tooth system, and a gear wheel, which is supported rotatably about a second rotation axis and which is provided with a second gear tooth system, wherein the eccentric is in driving connection with this transmission part, wherein the first gear tooth system of the gear rim engages in the second gear tooth system of the gear wheel and wherein additionally the second rotation axis is at a distance from the first rotation axis.

Abstract: A torque converter in which the output height of the output openings of the stator is higher than the input height of the input openings, producing a stator with a diffuser effect.

Abstract: The invention relates to a process for controlling a drive train with an internal combustion engine, a transmission and an automatically actuated brake system. In the event of a defect of the transmission, retardation is effected by means of the automatically actuated brake system in order to avoid impermissibly high speeds in the drive train.