Planetary gear train of automatic transmission
A planetary gear train is described for an automatic transmission having input and output shafts, comprising: a first planetary gear unit including a first sun gear, a first internal gear and a first pinion carrier; a second planetary gear unit including a second sun gear, a second internal gear and a second pinion carrier, the first internal gear and the second pinion carrier being constantly connected to the output shaft; a first brake unit capable of braking the first and second sun gears which are connected to each other to rotate together; a clutch through which the first pinion carrier is connectable to the input shaft; a second brake unit capable of braking the first pinion carrier; a third brake unit capable of braking the second internal gear; and first and second groups of one-way means which are parallelly interposed between the input shaft and the first sun gear and arranged in a mutually reversed relationship so that the power transmission from the input shaft to the first sun gear and that from the first sun gear to the input shaft are respectively carried out by the first and second groups of one-way means.
- Assignee:
- Nissan Motor Co., Ltd., Yokohama
- Patent Number(s):
- US 4653347
- OSTI ID:
- 6607897
- Country of Publication:
- United States
- Language:
- English
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Planetary gear train for automatic transmission
Planetary gear train for automatic transmission