| 摘要 |
The present invention relates to a method in order to control a hybrid powertrain (3) to achieve reverse drive, comprising an internal combustion engine (4), a gearbox (2) with an input shaft (8) and an output shaft (20); a first planetary gear (10) connected to the input shaft (8); a second planetary gear (12), connected to the first planetary gear (10); a first electrical machine (14), connected to the first planetary gear (10); a second electrical machine (16), connected to the second planetary gear (12); at least one gear pair (60, 72), connected with the first planetary gear (10) and the output shaft (20); and at least one gear pair (66, 78), connected with the second planetary gear (12) and the output shaft (20), wherein the internal combustion engine (4) is connected with the first planetary gear (10) via the input shaft (8). The method comprises the steps: a) ensuring that the moveable component parts (22, 26, 50) in the first planetary gear (10) are connected with each other and that the moveable component parts (28, 32, 51) in the second planetary gear (12) are disconnected from each other; b) ensuring that the gear pair (66, 78) connected with the second planetary gear (12) and the output shaft (20) are connected, and ensuring that the gear pair (60, 72) connected with the first planetary gear (10) and the output shaft (20) are disconnected; and c) controlling of the second electrical machine (16) in such a manner that a negative torque is achieved in the output shaft (20). The invention also relates to a vehicle (1) comprising a hybrid powertrain (3), a computer program (P) to control a hybrid powertrain (3) and a computer program product comprising program code for an electronic control device (48) or another computer (53) to implement the method according to the invention. |
