Multi-speed transmission

Details Multi-speed transmission Multi-speed transmission

2007-02-09

2009-10-06

Wright, Dirk (Department: 3655)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

Reexamination Certificate

active

07597645

ABSTRACT:
The transmission with one reverse and seven forward gears has input and output shafts, three planetary gear sets (P1,P2,P3), six shafts, and six shifting elements. The input shaft couples the ring gear of set (P1) and detachably couples shaft (5), which couples the spider of set (P3) and detachably couples the output shaft, which couples the ring gear of set (P2). Shaft (3) couples the ring gear of the set (P3) and the carrier of set (P2) and detachably couples the housing (G). Shaft (4) couples the sun gear of set (P2), and detachably couples the housing (G) and shaft (6), which couples the carrier of set (P1) and the sun gear of set (P3). The sun gear of set (P1) is fixed to the housing (G). Either the output shaft detachably couples shaft (3), shaft (5) detachably couples shaft (4), or shaft (3) detachably couples shaft (4).

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