| 摘要 |
PROBLEM TO BE SOLVED: To provide a planetary gear train of an automatic transmission for a vehicle capable of improving mountability and power transmission performance.SOLUTION: A planetary gear train of an automatic transmission for a vehicle includes: a first shaft receiving transmission of power of an engine; a second shaft disposed in parallel with the first shaft; a first planetary gear set including a first rotary element disposed on the first shaft, a second rotary element directly connected to the first shaft, and a third rotary element; a composite planetary gear set composed of a second planetary gear set and a third planetary gear set, and including a forth rotary element selectively connected to the second and third rotary elements through a circumscribing gear, a fifth rotary element connected to an output gear and constantly operated as an output element, a sixth rotary element selectively connected to the first rotary element through a circumscribing gear, and a seventh rotary element selectively connected to the third rotary element through a circumscribing gear; three transfer gears forming the circumscribing gear; and a frictional element. |
