Patent ID: 7004868
Filing Date: 2006-02-28
Classification: B60K,F16H,H02K,Y02T

Abstract:
1. A drivetrain for transmitting driving force from an output shaft of an engine to a drive shaft of a vehicle, comprising: a composite planetary gear mechanism including a single-pinion planetary gear train and a double-pinion planetary gear train, the single pinion planetary gear train having a sun gear, pinions, a carrier and a ring gear connected to the output shaft of the engine, the double pinion planetary gear having a sun gear, inner pinions, outer pinions and a ring gear connected to the drive shaft, the two planetary gear trains sharing carriers and sharing pinions of the single-pinion planetary gear train and inner pin ions of the double-pinion planetary gear train to construct a two-freedom-degree, five-element differential mechanism, a first motor-generator connected to the sun gear of the single-pinion planetary gear train, a second motor-generator connected to the sun gear of the double-pinion planetary gear train, and a brake which brakes the carrier of the two planetary gear train.