Seven-speed transmission

Details Seven-speed transmission Seven-speed transmission

2006-03-28

2006-03-28

Ho, Ha (Department: 3681)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

C475S284000

Reexamination Certificate

active

07018318

ABSTRACT:
A seven-speed transmission includes an input shaft, an output shaft, and three planetary gear sets. An interconnecting member continuously connects members of the second and third planetary gear sets. Six torque-transmitting mechanisms are provided between the planetary gear sets and a transmission housing. The six torque-transmitting mechanisms are engaged in combinations of two to establish seven forward speed ratios and a reverse speed ratio between the input shaft and the output shaft. A unique engagement sequence is provided for the torque-transmitting mechanisms to minimize sun gear loading.

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