INFINITELY VARIABLE TRANSMISSION WITH POWER DIVIDER TRAIN HAVING THREE OPERATING MODES AND METHOD OF OPERATING THE SAME

摘要

Infinitely variable power transmission with epicyclic power splitter (30) which mechanically connects a heat engine and two electrical machines (50, 60) exchanging electrical power with each other, transmission in which the mechanical power of the heat engine is introduced into the train (30). ) is distributed at one element (33) of the train between a first power channel where it is taken by a first electrical machine (50), and a second power channel where it is connected to the mechanical power of the second electrical machine (60) and is grouped on an output element of the train, from where it is transmitted to the wheels of the vehicle on a variable transmission ratio according to the electrical power exchanged between the two electrical machines, characterized in that it comprises a coupling unit (40) between the first electrical machine (50) and one of the two other motor sources for rotating block transmission on a fixed ratio.