Patent ID: 8579748
Filing Date: 2013-11-12
Classification: B60H,B60K,F16H,Y02T,Y10T

Abstract:
1. A power transmission apparatus for a vehicle comprising: an electric rotating machine which produces power; and a power transmission mechanism including three or more power split rotors which work to rotate in conjunction with each other to split the power as torque between a driven wheel of a vehicle and an auxiliary machine mounted in the vehicle, wherein a first rotor that is one of the power split rotors of said power transmission mechanism is coupled mechanically to the driven wheel of the vehicle, and a second rotor that is another of the power split rotors provides the torque to the auxiliary machine, wherein the power transmission mechanism is so designed that when a speed of the first rotor is zero (0), a speed of the second rotor has a value other than zero (0), wherein when the speed of the first rotor is zero (0), the speed of the second rotor is controllable by controlling a rotational speed of said electric rotating machine, wherein at least two of the power split rotors are connected mechanically to said electric rotating machine, wherein said power transmission mechanism includes a first planetary gear set and a second planetary gear set each of which is equipped with three rotors: a sun gear, a carrier, and a ring gear that are three of said power split rotors, two of said power split rotors of the first planetary gear set being coupled mechanically to two of said power split rotors of the second planetary gear set, and wherein four of the six rotors of the first and second planetary gear sets each rotate at different speeds relative to each other to split the power from the electric rotating machine between the driven wheel and the auxiliary machine.