| 摘要 |
An automatic transmission used in a vehicle for producing one of four forward speeds or a backward speed, which includes a torque converter with an impeller, turbine and stator for changing the torque speed of the power of the engine; a first planetary gear unit having a first sun gear, first planetary gear, a first planetary carrier and first ring gear; a second planetary gear unit having a second sun gear, second planetary gear, a second planetary carrier and second ring gear; a first transfer gear connected to the first planetary carrier for transferring the torque of the first planetary gear to the second ring gear; a second transfer gear connected to the second planetary carrier for transferring the torque of the second planetary gear to aid first ring gear; a first transfer shaft for transferring the torque of the turbine to the first planetary gear unit, the first planetary gear unit and first transfer gear being mounted on the first transfer shaft; a second transfer shaft for transferring the torque received from the first planetary gear unit and first transfer gear to a final gear unit connected to a differential gear; and a main reduction gear unit for making a suitable combination of the gears of the first and second planetary gear units, transfer gears, and the first and second shafts to produce one of the four forward speeds or the backward speed. |
