| 摘要 |
The invention relates to a method to control a hybrid powertrain (3), in order to achieve a reverse drive, wherein the hybrid powertrain (3) comprises 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) and a first main shaft (34); a second planetary gear (12), connected to the first planetary gear (10) and a second main shaft (36); 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 main shaft (34) and the output shaft (20); and at least one gear pair (66, 78), connected with the second main shaft (36) 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 of: ensuring that moveable component parts (22, 26, 50) in the first planetary gear (10) are disconnected from each other and/or that moveable component parts (28, 32, 51) in the second planetary gear (12) are disconnected from each other; ensuring that an output shaft (97) in the internal combustion engine (4) is prevented from rotating; and controlling the first electrical machine (14) and/or the second electrical machine (16) in such a way that a negative torque is achieved in the output shaft (20) via the first main shaft (34) and/or the second main shaft (36). 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. |
