Powertrain with double planetary gear train for hybrid motor vehicles

摘要

The present invention is a powertrain for a hybrid type motor vehicle comprising an electric machine (22), a thermal engine (10), a speed variation device (14) including an engine epicyclic gear train (26) with a sun gear (36) and a crown (50), each connected to shaft (12) of thermal engine (10) by a controlled clutch (28, 30) and to a fixed portion (48) of the vehicle by a one-way coupling (32, 34), and a motion transmission track (120, 122) for motion transmission to a drive axle (16). The powertrain comprises another epicyclic gear train (96) connecting engine epicyclic gear train (26) to said motion transmission track (120, 122).