Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg

Andreas Schaefer

Tobias Kalisch

Reinhard Schaarschmidt

Oliver Ottinger

Joachim Buerkle

Mathias Himmelsbach

Roland Pfister

Uwe Leibbrand

Raphael Ahne

Martin Poeschl

Martin Burgbacher

A method for controlling shift process in dual-clutch gearbox having dual-clutch gearbox input shaft connected to a drive engine, having two friction clutches and two partial gearboxes, comprising detecting demand for a shift from source gear into target gear, the source gear and target gear assigned to first partial gearbox; opening friction clutch assigned to first partial gearbox and closing friction clutch assigned to other partial gearbox to transmit drive power via intermediate gear of other partial gearbox; disengaging source gear and temporarily conducting a pressure-exertion process in friction clutch assigned to the first partial gearbox before engagement of target gear, with rotational speed of first partial gearbox being reduced due to the pressure-exerting operation according to drag torque, opening friction clutch assigned to other partial gearbox and closing friction clutch assigned to first partial gearbox to transfer drive power to the target gear without an interruption in tractive force.

Method for controlling an upshift process in a dual-clutch gearbox

A shift device for an inline transmission, comprising a shift shaft which is rotated during selection movements and is offset axially during shift movements, a plurality of shift members each of which being mounted movable or pivotably in the axial direction, for the actuation of at least one assigned shift clutch, a plurality of shift fingers which are secured to the shift shaft and extend in each case towards one side, each shift finger being assigned to one of the shift members and being arranged in such a way that, in a defined rotary selection position of the shift shaft, the shift finger is coupled axially to its assigned shift member, in order to drive the shift member during an axial movement of the shift shaft, and a blocking device for preventing two or more gears of the transmission from being shifted simultaneously, the blocking device having a plurality of individual blocking elements mounted fixedly with respect to the casing. Further, the blocking elements each act between an assigned shift member and a blocking member connected fixedly to the shift shaft.

Shift device for manual field transmission

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Abstatt, Germany

Andreas Schaefer