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 power of an engine, an output shaft configured to output shifted power, a first planetary gear set including first, second, and third rotation elements, a second planetary gear set including fourth, fifth, and sixth rotation elements, a third planetary gear set including seventh, eighth, and ninth rotation elements, a fourth planetary gear set including tenth, eleventh, and twelfth rotation elements, and six control elements which are disposed between the rotation elements, and disposed at portions where the rotation elements are selectively connected to a transmission housing.

主权项

1. A planetary gear train of an automatic transmission for a vehicle comprising:
an input shaft receiving power of an engine; an output shaft configured to output shifted power; a first planetary gear set including first, second, and third rotation elements; a second planetary gear set including fourth, fifth, and sixth rotation elements; a third planetary gear set including seventh, eighth, and ninth rotation elements; a fourth planetary gear set including tenth, eleventh, and twelfth rotation elements; and six control elements which are disposed between the rotation elements, and disposed at portions where the rotation elements are selectively connected to a transmission housing, wherein the input shaft is continuously connected with the first rotation element, the output shaft is continuously connected to the eleventh rotation element, the first rotation element is continuously connected to the fifth rotation element, the third rotation element is continuously connected to the eighth rotation element, the fourth rotation element is continuously connected to the ninth rotation element, the fourth rotation element is continuously connected to the tenth rotation element, the second rotation element is selectively connected to the transmission housing, and while three control elements of the six control elements are operated, at least nine forward speed stages and at least one reverse speed stage are implemented.