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1. (WO2013124082) MULTI-RATIO TRANSMISSION

Pub. No.:    WO/2013/124082    International Application No.:    PCT/EP2013/050352
Publication Date: Fri Aug 30 01:59:59 CEST 2013 International Filing Date: Fri Jan 11 00:59:59 CET 2013
IPC: F16H 3/66
Applicants: ZF FRIEDRICHSHAFEN AG
Inventors: BECK, Stefan
SIBLA, Christian
RIEGER, Wolfgang
Title: MULTI-RATIO TRANSMISSION
Abstract:
The invention relates to a multi-ratio transmission having nine forward gears and one reverse gear, comprising four planetary gear sets (P1, P2, P3, P4), eight rotatable shafts (1, 2, 3, 4, 5, 6, 7, 8) and six shift elements (03, 04, 05, 14, 17, 18), wherein the sun gear of the first planetary gear set (P1) is connected to the fifth shaft (5), which is connected to the sun gear of the third planetary gear set (P3) and can be coupled to the housing (G) via a third brake (05). The drive shaft (1) can be detachably connected to the fourth shaft (4) via a first clutch (14), which is connected to the web of the third planetary gear set (P3) and to the sun gear of the second planetary gear set (P2) and can be coupled to the housing (G) via a second brake (04). The drive shaft (1) can be detachably connected to the seventh shaft (7) which is connected to the internal gear of the third planetary gear set (P3) via a second clutch (17), and can be detachably connected to the eighth shaft (8) which is connected to the internal gear of the fourth planetary gear set (P4) and to the web of the second planetary gear set (P2) via a third clutch (18), the sixth shaft (6) is connected to the internal gear of the second planetary gear set (P2) and to the web of the first planetary gear set (P1), the third shaft (3) is connected to the sun gear of the fourth planetary gear set (P4) and can be coupled to the housing (G) via a first brake (03). The output shaft (3) is connected to the web of the fourth planetary gear set (P4) and to the internal gear of the first planetary gear set (P1).