Multi-speed transmission

Details Multi-speed transmission Multi-speed transmission

2007-02-09

2009-08-18

Pang, Roger (Department: 3655)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

C475S290000

Reexamination Certificate

active

07575533

ABSTRACT:
A multi-speed transmission with nine forward gears and one reverse gear, four planetary gear sets, seven shafts and six shifting elements. The input shaft is coupled to gear sets (P2,P3); shaft (3) is coupled to the carrier of gear set (P2) and the ring of gear set (P1) and is coupleable to the housing (G); shaft (4) is coupled to the ring of gear set (P3), the carrier of gear set (P4) and is coupleable to the housing; shaft (5) couples with gear set (P4) and the ring of gear set (P2) couples the housing (G), and via clutch (57) to shaft (7), which is coupled to the carrier of gear set (P1); shaft (6) is coupled to the carrier of gear set (P3) and coupleable via clutch (26) to output shaft which couples the ring of gear set (P4); the sun of gear set (P1) couples the housing.

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