| 主权项 |
1. A method to control a hybrid powertrain to optimize fuel consumption, wherein such hybrid driveline comprises a combustion engine; a gearbox with an input shaft and an output shaft; a first planetary gear, connected to the input shaft and a first main shaft; a second planetary gear, connected to the first planetary gear and a second main shaft; a first electrical machine, connected to the first planetary gear; a second electrical machine, connected to the second planetary gear (12); at least one gear pair connected with the first main shaft, and therefore the first planetary gear and the output shaft; and at least one gear pair connected with the second main shaft, and therefore with the second planetary gear and the output shaft, wherein the combustion engine is connected with a first planetary wheel carrier, arranged in the first planetary gear via the input shaft of the gearbox, and wherein the second main shaft is connected with a planetary wheel carrier, arranged in the second planetary gear, said method comprising the steps:
a) ensuring that the moveable parts of the first planetary gear are disconnected from each other, and that the moveable parts of the second planetary gear are disconnected from each other; b) bringing the combustion engine to a predetermined engine speed (nice); and c) controlling the first and the second electrical machine in such a way that a desired torque (TDrv) is achieved in the output shaft. |
