| 摘要 |
A gear train of an automatic transmission for vehicle is provided to reduce capacity of an oil pump and to enhance oil pressure control efficiency by performing a shift operation with two frictional elements at each of shift stages. A first planetary gear set(PG1) includes a first rotation element, a second rotation element, and a third operation element. The first rotation element is directly connected to an input shaft in order to form an input path. The second rotation element is used for forming a first intermediate output path(MOP1). The third operation element is used for forming a second intermediate output path(MOP2). A second planetary gear set(PG2) is a complex planetary gear set including 4 rotation elements. The four rotation elements are composed of a fourth rotation element for forming an intermediate input path, a fifth rotation element for forming a variable intermediate input path(MAIP), a sixth rotation element for forming a final output path by being connected with an output shaft(OS), and a seventh rotation element connected variably to a transmission housing(H).
|
