| 摘要 |
<p>Disclosed is a planetary gear train of an automatic transmission for a vehicle. The planetary gear train of the automatic transmission for a vehicle according to an embodiment of the present invention comprises an input shaft which receives power of an engine; an output shaft; a first planetary gear set disposed on the input shaft while including a first linear gear, a first planetary carrier, and a first ring gear; a second planetary gear set which is disposed on the rear side of the first planetary gear set while including a second linear gear, a second planetary carrier, and a second ring gear; a third planetary gear set disposed on the rear side of the second planetary gear set while including a third linear gear, a third planetary carrier, and a third ring gear; a fourth planetary gear set disposed on the rear side of the third planetary gear set while including a fourth linear gear, a fourth planetary carrier, and a fourth ring gear; a first rotary shaft including the first linear gear; a second rotary shaft including the first planetary carrier and directly connected to the input shaft; a third rotary shaft including the first ring gear and the third and fourth linear gears; a fourth rotary shaft including the second linear gear; a fifth rotary shaft including the second planetary carrier; a sixth rotary shaft including the second ring gear and the third planetary carrier; a seventh rotary shaft including the third ring gear and the fourth planetary carrier and directly connected to the output shaft; an eighth rotary shaft including the fourth ring gear; a first clutch; a second clutch; a third clutch; a fourth clutch variably connecting the fifth rotary shaft and the eighth rotary shaft; a first brake; and a second brake, thereby performing multi-stage gearshift.</p> |
