| 摘要 |
The invention relates to the process of an overdrive operation of planetary gear set power transmission to increase both speed and torque output. The new invention can be used in mechanical transportation, vehicle, power plant, electric power generator, machinery, engine and transmission, gearbox, electric motor and other mechanical equipment with moving or rotating mechanical shaft. The power transmission has a main planetary gear set that performs the new process of an overdrive operation without any component being held. The sun gear runs in reverse direction driving by a second planetary gear set running in reverse drive operation with or without an external motor, or without the second planetary gear set just an external motor. And further include a powe r source or power input to drive the planetary carrier or holder of main planetary gear set.
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