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 essentially relates to a method for blocking wheels of a vehicle when stopped in which a transmission device (1) is placed between an output (2) of a heat engine (3) and a wheel (5) axle shaft (4). This device (1) comprises an input shaft (13) connected to the output (2) of the engine (3), an output shaft (31) connected to the wheel axle shaft (4), and at least one electrical machine (6, 7). The device also comprises a mechanical assembly (12) interconnecting the input shaft (13), the output shaft (31) and the shaft (8, 9) of the machine. This assembly (12) is connected to a bridge (15) that, in turn, is connected to the wheel (5) axle shaft (4). The invention provides that, in order to block the wheels when the vehicle is stopped and to limit an observable torque on the elements of the assembly (12), the wheel axle shaft is blocked by the mechanical assembly.

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 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 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.

Abstract: A power transmission device (1) between a shaft (2) of a thermal engine (3) and a shaft (4) of wheels comprises a first and a second electric machine (6, 7), as well as a mechanical assembly (9). In a first mode of operation, the first machine (6) is connected to an element (27) of the assembly (9) and the second machine (7) is connected to a shaft (4) of the wheels (5). In a second mode of operation, the first machine (6) is connected to the element (27) of the assembly (9) and the second machine (7) is connected to another element (26) of the ensemble (9). In a third mode of operation, the shaft (10) of the first machine (6) is connected to the shaft (4) of the wheels (5) and the shaft (11) of the second machine (7) is connected to the other element (26).

Abstract: The present invention concerns essentially a power transmission device (1) between a shaft (2) of a thermal engine (3) and a shaft (4) of wheels (5). This transmission device (1) comprises a first and a second electric machine (6, 7), as well as a mechanical assembly (9). In a first mode of operation, the first machine (6) is connected to an element (27) of the assembly (9) and the second machine (7) is connected to a shaft (4) of the wheels (5). In a second mode of operation, the first machine (6) is connected to the element (27) of the assembly (9) and the second machine (7) is connected to another element (26) of the ensemble (9). In a third mode of operation, the shaft (10) of the first machine (6) is connected to the shaft (4) of the wheels (5) and the shaft (11) of the second machine (7) is connected to the other element (26).

Abstract: The present invention concerns a device (1) for power transmission between an output (2) of a heat engine (3) and an axle (5) shaft (4) and a related power transmission method. Said device comprises an input shaft (10) connected to the output (2), an output shaft (14) connected to the axle shaft (4), first and second electrical machines (6, 7), and a mechanical assembly (12) assembling the input shaft (10), the output shaft (14) and the shafts (8, 9) of the two machines. In order to limit the dimension of the device, the assembly (12) consists of two planetary trains (65, 66) comprising common planet pinion cage (18) which drives axles (23-26) in contact with the planet pinion cage (18) and the planet pinions (19, 21) of said trains. Moreover, a first switching device (30) connects the shaft (8) of the first machine (6) either to the input shaft (10) or to an element (22) of one of the trains (65, 66) of the mechanical assembly (12).

Abstract: The invention essentially relates to a method for blocking wheels of a vehicle when stopped in which a transmission device (1) is placed between an output (2) of a heat engine (3) and a wheel (5) axle shaft (4). This device (1) comprises an input shaft (13) connected to the output (2) of the engine (3), an output shaft (31) connected to the wheel axle shaft (4), and at least one electrical machine (6, 7). The device also comprises a mechanical assembly (12) interconnecting the input shaft (13), the output shaft (31) and the shaft (8, 9) of the machine. This assembly (12) is connected to a bridge (15) that, in turn, is connected to the wheel (5) axle shaft (4). The invention provides that, in order to block the wheels when the vehicle is stopped and to limit an observable torque on the elements of the assembly (12), the wheel axle shaft is blocked by the mechanical assembly.

Abstract: The invention essentially relates to a method of controlling a device (1) for the transmission of power between a shaft (2) of a heat engine (3) and an axle shaft (4). The inventive method involves the use of two electric machines (6, 7), namely a first machine having a rotation speed WA and a torque CA and a second machine having a rotation speed WB and a torque CB. A coupling device (11) comprises an electric controller (27) which produces set point signals RefCA and RefCB for controlling the inverters (12, 13). According to the invention, in order to produce set point signals RefCA and RefCB, an electric reference signal RefELEC corresponding to CA*WA+CB*WB and a mechanical reference signal RefMECA corresponding to CA*WB?CB*W A are applied at the inputs of the control device.