| 摘要 |
PURPOSE: A gear train of automatic transmission for vehicles is provided to improve oil pressure control effectiveness by operating two friction elements at each transmission stage. CONSTITUTION: A first planetary gear set(PG1) comprises a first rotation element(N1) connected to a transmission housing(H), a second rotation element(N2) connected to the input shaft(IS), and a third rotation element(N3) operated as an output component. A second planet gear set(PG2) comprises fourth or eighth rotation elements. The fourth rotation element is connected to an input shaft(IS). A fifth rotation element is connected to the third rotation element. A sixth rotation element is connected to transmission housing. The seventh rotation element is connected to the fifth rotation element and the output gear(OG).
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