PLANETARY GEAR TRAIN OF AUTOMATIC TRANSMISSION FOR VEHICLES

摘要

A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving torque, an output shaft disposed in parallel with and apart from the input shaft, a planetary gear set including a first sun gear, a second sun gear, a common planet, and a common ring gear engaged, a first rotation shaft directly connected to the first sun gear and selectively connected to the input shaft, a second rotation shaft directly connected to the common planet carrier and directly connected to the output shaft, a third rotation shaft directly connected to the common ring gear and selectively connected to the input shaft or to a transmission housing, and a fourth rotation shaft directly connected to the second sun gear and selectively connected to the input shaft through first and second paths or to the transmission housing.

主权项

1. A planetary gear train of an automatic transmission for a vehicle comprising:
an input shaft receiving torque; an output shaft disposed in parallel with and apart from the input shaft; a planetary gear set including a first sun gear engaged with a long pinion, a second sun gear engaged with a short pinion, a common planet carrier rotatably supporting the short pinion and the long pinion, and a common ring gear engaged with the long pinion as rotation elements thereof; a first rotation shaft directly connected to the first sun gear and selectively connected to the input shaft; a second rotation shaft directly connected to the common planet carrier and directly connected to the output shaft; a third rotation shaft directly connected to the common ring gear and selectively connected to the input shaft or to a transmission housing; and a fourth rotation shaft directly connected to the second sun gear and selectively connected to the input shaft through first and second paths or to the transmission housing.