The drive train has an engine, a gearbox and at least one gearbox input shaft with a coupling unit (103) connected between them for torque transfer, whereby the coupling unit contains at least one friction clutch (171,172). The coupling unit is supported o...

A drive train in which the input and output are uncoupled in the force-free condition and is engaged by a hydraulic connection comprising a linked (13,14) master and slave cylinder. There is a pressure release unit (1a) between the cylinders to relieve the...

Time control is used as an activation criterion for testing whether a clutch slips during a time period to be determined and whether an accelerator pedal is being operated. Four to six seconds are chosen as a value for the time period. A clutch temperature...

The hydraulic system, containing master and slave cylinders, has a pressure pipe between them made from two or more segments having different wall thicknesses. The pipe can be made from a plastic material in one piece, partly from plastic and partly from m...

The automatic transmission includes a control unit that controls the operation of the transmission brake (70). Braking torque is provided to the transmission when the motor torque is negative, vehicle speed is above a predetermined value, gear change downw...

A measuring torque is increased until a desired clutch target torque is reached. A creeping torque is adapted from a controlling torque characteristic curve as an additional point. A clutch torque corresponding to the point of engagement is adapted by mean...