摘要 |
A multi step transmission comprises planetary gearsets (P1, P2, P3, P4), shafts, and shift elements. The sun gear of gearset (P1) couples shaft (4) which couples housing (G) via brake (04), the carrier of gearset (P1) couples shaft (3) which couples housing (G) via brake (03), the drive shaft via clutch (13), and shaft (5) via clutch (35). Shaft (5) couples the ring gear of gearset (P2) and the sun gear of gearset (P4). Shaft (1) couples the sun gear of gearset (P2) and operatively couples the carrier of gearset (P3). Shaft (6) couples the ring gear and carrier of gearsets (P1, P2) respectively, and operatively couples the sun gear of gearset (P3). The ring gear of gearset (P4) couples housing (G) and output shaft (2) couples the ring gear of gearset (P3), and detachably couples, via clutch (28), shaft (8) which couples the carrier of gearset (P4).
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