Luk Getriebe-systeme Gmbh

Luk Lamellen Und Kupplungsbau Beteiligungs Kg

Luk Lamellen Und Kupplungsbau Gmbh

Rainer Eidloth

Bernhard Walter

Carsten Weinhold

Anton Fritzer

Franz Bitzer

Benjamin Kemmner

Jochen Schmid

Kurt Graef

Roland H&ouml;lz

Thomas Frietsch

Martin Vornehm

Hans-J&uuml;rgen Renk

A torque transfer system of a motor vehicle has a clutch, a transmission, a control device, and a traction load detecting device. The traction load is the variable resistance that a vehicle has to overcome to start or to keep moving, e.g., going uphill or downhill, with a heavy or light load, with or without a trailer or a roof load. The control device controls the torque transfer system, in particular the clutch, dependent on input signals received from the traction load detecting device.

Torque transfer system for a motor vehicle

An infinitely variable transmission has a pair of driving conical flanges arranged on a first shaft and a pair of driven conical flanges arranged on a second shaft. Each pair has one axially movable conical flange and one axially fixed conical flange. The transmission is equipped with a locking device which when necessary can frictionally lock at least one driving conical flange to a driven conical flange.

Infinitely variable transmission with a locking device

A continuously variable transmission wherein each of two parallel shafts carries a pulley having a fixed flange and a second flange movable axially of the shaft toward and away from the respective fixed flange. An endless torque transmitting chain or belt is trained over the two pulleys. At least one flange of at least one of the pulleys is assembled of two or more parts which consist of sheet metal and are welded and/or otherwise affixed to each other.

Transmission

The pressure of hydraulic fluid which is supplied to the continuously variable transmission in the power train of a motor vehicle is regulated by an apparatus wherein an adjustable pilot valve can receive fluid from a pilot conduit leading to a pressure reducing valve. The pilot conduit normally receives fluid from a further conduit, wherein the pressure of fluid is at least substantially constant, by way of a flow restrictor. A branch conduit serves to evacuate fluid from the pilot conduit into the pilot valve when the latter is at least partially open. The fluid-discharging end of the flow restrictor confronts the inlet of the branch conduit, and such inlet is narrowed to reduce the likelihood of turbulence developing in the fluid stream flowing from the pilot conduit, across the further conduit and into the inlet of the pilot valve.

Pressure regulating method

A continuously variable belt-drive transmission for a motor vehicle with two pairs of conical discs ( ) has a compact layout arrangement where the torque flows from a prime mover through an input shaft ( ), start-up element ( ), torque sensor ( ), first conical-disc pair ( ), chain-belt ( ), second conical-disc pair ( ), direction-reversing element ( ), and output shaft ( ) to the wheels of the vehicle.

Continuously variable cone-pulley-belt transmission

A continuously variable chain-belt transmission has two cone-disk pulleys (pairs of conical disks) (,), a chain belt (,) as well as a noise-damping device (,) for damping the noise generated by the chain-belt running over the cone-disk pulleys. The noise-damping device is arranged at the bearings of the conical disks (,) and prevents sound waves from being transmitted through material portions of the transmission from the conical disks to adjacent parts.

Continuously variable chain-belt transmission

Pressure regulating method and apparatus

An infinitely variable transmission has a first pair of conical flanges arranged on a first shaft and a second pair of conical flanges arranged on a second shaft, where each pair has an axially movable flange and an axially fixed flange. A torque-transmitting means is disposed between the pairs of conical flanges. Piston/cylinder units and plenum chambers comprising circular ring-shaped elements serve to apply pressure to and effect axial movement of the movable conical flanges. The ring-shaped elements have radially inner portions with openings to receive the shafts. The radially inner portion of at least one of the ring-shaped elements has a welded seam connecting the ring-shaped element to the shaft received by its opening.

Infinitely variable transmission with two pairs of conical flanges

In a transmission having shaft-mounted components operated by a pressurized medium or fluid, the fluid is supplied to the components using an at least partially hollow shaft. A hollow tube within the bore of the shaft carries the fluid. The tube may be divided into separate passageways so as to control flow of fluid to selected components and isolate components from each other. The fluid pressure in the components may be torque-dependently modulated by a torque sensor.

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Bamberg, Germany

Rainer Eidloth