Planetary gear train for automatic transmission
A planetary gear train is described for an automatic transmission, the planetary gear train having gear ratios including a first forward gear ratio and a reverse, the planetary gear train comprising: an input shaft; a basic planetary gearing including a first rotary element which is to be held stationary when the first gear ratio is established and also when the reverse is established, and a second rotary element which is to serve as an output member of the basic planetary gearing; an output planetary gear set including a ring gear, a sun gear and a pinion carrier; change speed means for establishing any desired one of the gear ratios; a clutch means for establishing a connection between the other one of the ring gear and the sun gear of the output planetary gear set and the first rotary element of the basic planetary gearing during operation with the first gear ratio and also during operation with the reverse, and a brake means for anchoring the other one of the ring gear and the sun gear of the output planetary gear set during operation with the reverse; and an output shaft connected to the pinion carrier of the output planetary gear set.
- Assignee:
- Nissan Motor Co., Ltd., Yokohama, JP
- Patent Number(s):
- US 4660439
- OSTI ID:
- 6492447
- Resource Relation:
- Patent File Date: Filed date 7 Sep 1984
- Country of Publication:
- United States
- Language:
- English
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Planetary gear train of automatic transmission