| 摘要 |
A gear train of automatic transmission for vehicles is provided to improve control efficiency of the oil pump by using two friction elements. The first planetary gear set(PG1) comprises the first rotation element directly connected to the transmission housing(H), and the second rotation element forming the intermediate output pathway and the third rotation element forming the input path. The second planet gear set(PG2) comprises the fourth rotation element forming the first in-between input path the fifth rotation element connected to the output axis, and the sixth rotation element forming the first variable pressure pathway and the seventh rotation element changeably connected to the transmission housing. A plurality of friction members connects the rotation elements of the first and second planet gear sets.
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