| 摘要 |
The invention relates to a torque overlay device for use in a hybrid drive system (1) for motor vehicles, and particularly for use in passenger vehicles, said hybrid drive system (1) comprising an internal combustion engine (VM), an electric motor (EM) and the torque overlay device, and a torque of the internal combustion engine (VM) and a torque of the electric motor (EM) being able to be overlaid using said torque overlay device. The torque overlay device is connected, on the output side, to a driven element (9) of the vehicle, and comprises a first and a second torque input (3, 4) and a torque output (5), as well as a first transmission device (12) and a second transmission device (13). Said electric motor (EM) can be coupled to the first torque input (3) in a torque-resistant manner, and the internal combustion engine (VM) can be coupled to the second torque input (4) in a torque-resistant manner, said first torque input (3) being connected to the first transmission device (12) and the second torque input (4) being connected to the second transmission device (13), both in a torque-resistant manner, and said transmission devices (12, 13) each being coupled, on the driven side, to the torque output (5) of the torque overlay device in a torque-resistant manner. The first transmission device (12) comprises at least two alternately selectable transmission stages (EM1, EM2) and the second transmission device (13) comprises at least one alternately selectable transmission stage (VM3, VM4), said first transmission device (12) comprising at least one planetary gear set (15) to implement the at least two alternately selectable transmission stages (EM1, EM2), and the second transmission device (13) comprising at least one spur gear set (27, 28) to implement the at least one selectable transmission stage (VM3, VM4). The invention also relates to a hybrid drive system (1) comprising a torque overlay device of the aforementioned type, as well as to a method for operating such a hybrid drive system (1) in a motor vehicle. |
