Zf Friedrichshafen Ag

Hans-Jorg Domian

Ralf Dreibholz

Gerhard Gumpoltsberger

Walter Kuhn

Gerd Frotscher

Thomas Schober

Jurgen Wafzig

Bernhard Drerup

Bülent Korkmaz

The invention concerns a transmission () with automatic shifting capabilities and with three spider supported planetary sets (), three brakes (), and two clutches () for the shifting of six forward moving gears and one reverse gear and having an input shaft () and an output shaft (). In this way, the input shaft () is in continual connection with the sun gear () of the second planetary set () and the input shaft () is connectable to the sun gear () of the first planetary set () by means of the first clutch () and/or by means of the second clutch () is also connectable with the spider () of the first planetary set (). Further, the sun gear () of the first planetary set () by means of the first brake () and or the spider () of the first planetary set () by means of the second brake () and/or the sun gear () of the third planetary set () by means of the third brake, are all connectable with the housing of the transmission.

Automatic transmission for motor vehicles

The method for changing the gears of a manually shiftable change gear unit for commercial vehicles which has a main gear unit and fitted downstream thereof a combination of splitter gear unit and range gear unit wherein when shifting the individual gear units from the coupling position (1) to the neutral position (0), in time are first shifted the main gear unit, then the splitter gear unit and finally the range gear unit and conversely, when shifting form the neutral position (0) to the coupling position (1), in time first the range gear unit, then the splitter gear unit and finally the main gear unit are shifted.

Method for changing gears of a multiple gear manually shiftable change

Transmission control system for reducing thermal load on engaging

Process for controlling an automatic transmission

Growing community of inventors

Immenstaad, Germany

Hans-Jorg Domian