Abstract: The invention relates to a power transmission device (1.1) that comprises an input shaft (2) to be connected to a thermal engine (3) and an output shaft (4) to be connected to a wheel shaft (5). The device (1.1) includes first and second electric machines (6, 7) and a mechanical assembly (12) ensuring the mechanical link between the input shaft, the output shaft and the shafts (8, 9) of the machines (6, 7). According to the invention, in order to limit the use of the epicyclic gear trains, at least one of the electric machines (8, 9) comprises a rotor (6.1) and a stator (6.2) connected to the mechanical assembly (12).

Abstract: The invention relates to a method for optimising the power consumption of a hybrid and plug-in vehicle (1) comprising two traction modes, an electric (3) traction mode and a combustion (4) traction mode. Said method includes: determining the distance travelled between two consecutive recharges of the vehicle (1) by the mains; determining the electric energy available at a time “t” in an electric energy storage device (2); and determining a parameter “mu” according to the distance travelled between two consecutive recharges of the vehicle (1) by the mains and the electric energy available in the storage device (2).

Abstract: In a hybrid vehicle system comprising an electric power storage system and an electric motor, the method includes a first step of allowing the electric power storage system to be discharged: upon detecting a condition of a charge of the electric power storage system that is greater than a first threshold to optimize power consumption; and upon detecting a condition of the charge of the electric power storage system that is greater than a second threshold to increase performance.

Abstract: The invention relates to a power transmission device (1.1) that comprises an input shaft (2) to be connected to a thermal engine (3) and an output shaft (4) to be connected to a wheel shaft (5). The device (1.1) includes first and second electric machines (6, 7) and a mechanical assembly (12) ensuring the mechanical link between the input shaft, the output shaft and the shafts (8, 9) of the machines (6, 7). According to the invention, in order to limit the use of the epicyclic gear trains, at least one of the electric machines (8, 9) comprises a rotor (6.1) and a stator (6.2) connected to the mechanical assembly (12).

Abstract: The invention relates to a method for controlling a hybrid vehicle that comprises a traction chain with a propulsion unit (10) including a thermal engine (18) coupled to the vehicle wheels (14, 16) via a gearbox (22), an electric machine ME (40) that can be configured either as an electric motor for providing a traction torque to the vehicle or as a generator for supplying an electric current to an electric-energy storage means (50) via an electric network (52) of the vehicle, a coupling device (42) positioned between the electric machine and a driving shaft (48) coupled to the vehicle wheels (34, 36), and comprising a control input Ec so as to be switched either into a so-called coupling position providing a mechanical coupling between the electric machine (40) and the driving shaft (48), or into an uncoupling position interrupting the mechanical coupling between said electric machine and the driving shaft, at least one sensor (64, 66) supplying a value of a parameter (Vt, Dc) characteristic of the vehicle m

Abstract: The invention concerns a power transmission method using a transmission device receiving mechanical power from several sources, comprising at least first and second electrical machines, and delivering the power to an output shaft. The method consists in decoupling the first electrical machine from a first input point of the device, then in coupling the first electrical machine to a second input point of the device. The method is characterized in that it consists in, when the first electrical machine is being decoupled, compensating the power (P7) transmitted by the first electrical machine prior to its being decoupled by modifying the power (P6) transmitted by the second electrical machine (6) of the sources such that the power (P4) delivered by the device remains linear.