OPTIMIZED POWERTRAIN FOR DRIVING A MOTOR VEHICLE, ESPECIALLY FOR A HYBRID VEHICLE

摘要

The present invention relates to a power unit of a motor vehicle comprising a heat engine (10) with a shaft (12), a speed variation device (14) comprising an epicyclic motor train with a sun gear (34a) and a ring gear (48a). ) each connected to the shaft (12) of the heat engine (10) by a controlled-controlled coupling (68a, 70a) and a fixed part of the vehicle by a unidirectional automatic bearing (30, 32), and a driving axle ( 16). According to the invention, the controlled-controlled coupling (70a) of the ring gear (48a) is located on the motor shaft (12) on the thermal motor side (10), and the controlled-order coupling (68a) of the sun gear ( 34a) is located on the drive shaft (12) on the opposite end side of the engine.