| 摘要 |
Disclosed is a planetary gear train of an automatic transmission for a vehicle. The planetary gear train of an automatic transmission for a vehicle according to one embodiment of the present invention comprises an input axis for transmitting the power of an engine; an output axis for outputting gearshifted rotational power; a first planetary gear set maintaining first, second and third rotational elements arranged on the input axis, and having two rotational elements variably connected to the input axis; a second planetary gear set maintaining fourth, fifth and sixth rotational elements arrange on the output axis, having two rotational elements variably connected to the input axis, having two rotational elements variably connected to the two rotational elements of the first planetary gear set, and having one rotational element directly connected to the output axis; four transfer gears for selectively connecting, with external gears, the fourth, fifth and sixth rotational elements of the second planetary gear set to the input axis and the two rotational elements of the first planetary gear set; and six friction members composed of four clutches for variably connecting the two rotational elements of each of the first and second planetary gear sets to the input axis, and two brakes for variably connecting a rotational element selected from the rotational elements to a transmission housing. |
