Zf Friedrichshafen Ag

Torsten Buechner

Markus Maurer

Dominik Steinhauser

A transmission comprising a transmission () and a reduction stage. Sun of set (P) is connected to the input (), which can be releasably connected, via clutch (A), to shaft () connected to sun of set (P) and sun of set (P), and, via clutch (B), is connectable to shaft () connected to carrier of set (P) and ring of set (P). Shaft () is coupled to housing (G) via brake (F). Carrier of set (P) is connected to shaft () connected with ring of set (P) and is couplable, via brake (E), to housing (G). Ring of set (P) is connected to shaft () which is couplable, via brake (D), to housing (G). Output () is connected to carrier of set (P). Carrier of set (P) is connected to output (), ring of set (P) is couplable, via brake (H), to housing (G), and sun of set (P) is connected to the shaft ().

Multistage transmission

A transmission having basic and reversing transmissions. The basic transmission has planetary gearsets, shafts and shift elements. A sun of gearset (P) couples the drive shaft, which can couple shaft () and the suns of gearsets (P, P), and shaft () and the carrier and ring of gearsets (P, P) respectively. Carrier of gearset (P) couples shaft (), which couples the ring of gearset (P). The ring of gearset (P) couples shaft (). Shafts () can couple the housing. The output shaft couples the carrier of gearset (P). The reversing transmission has a minus planetary gearset with a sun which couples and is driven by the basic transmission output, and a carrier that can couple the housing via a locking element, and a ring that couples the reversing transmission output which can couple, via another locking element, the basic transmission output.

A multistage transmission in planetary design is proposed, comprising a basic transmission () and a group transmission () downstream of the basic transmission (), wherein the basic transmission () comprises three planetary gear set (P, P, P), at least six rotatable shafts () and at least five shift elements (A, B, D, E, F), the selected engagement of which results in different transmission ratios between the input drive and the output drive, wherein the group transmission () has a minus planetary gear set (P), the sun gear of which is connected to the output shaft () of the basic transmission (), the ring gear of which can be coupled to the housing (G) via a first shift element (K), and the carrier of which is connected to the output shaft () of the multistage transmission, which can be releasably connected to the ring gear via a second shift element (K), and wherein the basic transmission () and the group transmission () are disposed in a common housing (G).

Growing community of inventors

Friedrichshafen, Germany

Torsten Buechner