Abstract: The invention relates to a device (1) for the transmission of power between a shaft (2) of a heat engine (3) and a wheel (5) axle shaft (4) of a motor vehicle. The inventive device (1) comprises at least one electrical machine (6, 7) comprising a machine shaft (8, 9) and a mechanical pump (11) comprising a pump shaft (55). The shaft (2) of the engine (3) and the machine shaft (8, 9) are connected to the pump shaft (55) by means of a mechanism (12) comprising two free wheels. The connection between the pump (11) and the shafts (8, 9) of the transmission device is such that the pump (11) can be driven in any vehicle operating mode.

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 present invention essentially concerns a method for a motor vehicle speed ratio shift. Said method uses a power transmission device (1.1) comprising a traction chain consisting of a heat engine (2), a clutch (3), an electrical machine (4), a gearbox (5), and wheels (6). The invention is characterized in that, upon shifting, the heat engine (2) is started before, during or after the torque (CMEL) observable on the shaft (11) of the electrical machine (4) is canceled, by means of a starter system (7) mechanically independent of the electrical machine (4).

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 relates to a device (1) for the transmission of power between a shaft (2) of a heat engine (3) and a wheel (5) axle shaft (4) of a motor vehicle. The inventive device (1) comprises at least one electrical machine (6, 7) comprising a machine shaft (8, 9) and a mechanical pump (11) comprising a pump shaft (55). The shaft (2) of the engine (3) and the machine shaft (8, 9) are connected to the pump shaft (55) by means of a mechanism (12) comprising two free wheels. The connection between the pump (11) and the shafts (8, 9) of the transmission device is such that the pump (11) can be driven in any vehicle operating mode.

Abstract: The present invention essentially concerns a method for a motor vehicle speed ratio shift. Said method uses a power transmission device (1.1) comprising a traction chain consisting of a heat engine (2), a clutch (3), an electrical machine (4), a gearbox (5), and wheels (6). The invention is characterized in that, upon shifting, the heat engine (2) is started before, during or after the torque (CMEL) observable on the shaft (11) of the electrical machine (4) is canceled, by means of a starter system (7) mechanically independent of the electrical machine (4).

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.