| 摘要 |
The present invention relates to a method to control a hybrid powertrain (3), comprising a combustion engine (4); a gearbox with an input shaft (8) and an output shaft (20), which combustion engine is connected to the input shaft (8); a first planetary gear (10), which is 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 (G1, 60, 72), connected with the first planetary gear (10) and the output shaft (20); and at least one gear pair (G2, 66, 78), connected with the second planetary gear (12) and the output shaft (20). The method comprises the steps: a) engaging gears in the gearbox (2), corresponding to the at least one gear pair (G1, 60, 72), which is connected with the first planetary gear (10), and to the gear pair (G2, 66, 78), which is connected with the second planetary gear (12) and the output shaft (20); and b) connecting a second sun wheel (32), arranged in the second planetary gear (12), and a second planetary wheel carrier (51) with each other, with the use of a second coupling device (58). The invention also relates to a vehicle (1) with a hybrid powertrain (3), which vehicle (1) comprises a gearbox (2), which is controlled according to the method. The invention also relates to 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. |
