Automatic transmission with improved gear arrangement

摘要

The present disclosure provides an automatic transmission having an input adapted to couple to a torque-generating mechanism and an output coupled to the input. The transmission also includes a first rotating torque-transferring mechanism disposed along a first torque path and coupled to the input. A second rotating torque-transferring mechanism is disposed along a second torque path and is coupled to the input independent of the first torque-transferring mechanism. The transmission includes a plurality of stationary torque-transferring mechanisms, each of which is disposed between the input and output. The transmission includes a first planetary gearset, a second planetary gearset, a third planetary gearset, and a fourth planetary gearset, where each gearset includes a sun gear, a ring gear, and a carrier assembly. Moreover, the carrier assembly of the third planetary gearset is coupled to the output and the sun gear of the fourth planetary gearset.

主权项

1. An automatic transmission, comprising;
an input adapted to couple to a torque-generating mechanism; an output coupled to the input; a first rotating torque-transferring mechanism disposed along a first torque path, the first rotating torque-transferring mechanism being coupled to the input; a second rotating torque-transferring mechanism disposed along a second torque path, the second rotating torque-transferring mechanism being coupled to the input independent of the first torque-transferring mechanism; a first stationary torque-transferring mechanism, a second stationary torque-transferring mechanism, a third stationary torque-transferring mechanism, and a fourth stationary torque-transferring mechanism, each of the stationary torque-transferring mechanisms being disposed between the input and the output; and a first planetary gearset, a second planetary gearset, a third planetary gearset, and a fourth planetary gearset, where each gearset includes a sun gear, a ring gear, and a carrier assembly; wherein, the carrier assembly of the third planetary gearset is coupled to the output and to the ring gear of the fourth planetary gearset; wherein, the carrier assembly of the first planetary gearset is coupled to the ring gear of the second planetary gearset; wherein, the input is directly coupled to the first planetary gearset.