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AssigneeScania CV AB
InventorsMikael BERGQUIST, Mathias BJÖRKMAN, Johan LINDSTRÖM, Niklas PETTERSSON
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A method is provided to control a hybrid powertrain comprising an internal combustion engine; a gearbox with input and output shafts; a range gearbox, connected to the output shaft; a first planetary gear, connected to the input shaft; a second planetary gear, connected to the first planetary gear; a first electrical machine, connected to the first planetary gear; a second electrical machine, connected to the second planetary gear; at least one gear pair, connected with the first planetary gear and the output shaft; and at least one gear pair, connected with the second planetary gear and the output shaft, wherein the internal combustion engine is connected with the first planetary gear via the input shaft. The method comprises the steps: a) engaging a gear by way of connecting two rotatable components in the first planetary gear; b) connecting the at least one gear pair, connected with the second planetary gear and the output shaft; c) connecting a sixth gear pair, arranged between a countershaft and the range gearbox with the countershaft, so that the countershaft is connected with the output shaft via the range gearbox; d) controlling the range gearbox from a low range position to a neutral state, in which no torque transmission occurs through the range gearbox; e) controlling two rotatable components in the range gearbox towards achieving a synchronized rotational speed with the assistance of the first electrical machine; f) connecting the rotatable components with the use of a shiftable third clutch device; and g) engaging a gear by way of connecting two rotatable components in the second planetary gear.
A method to control a hybrid powertrain, in order to achieve a shifting from a low range position to a high range position, wherein the hybrid powertrain comprises an internal combustion engine;
A vehicle with a hybrid powertrain, comprising an internal combustion engine;
(canceled)
A computer program product comprising program code stored in a non-transitory computer-readable medium readable by a computer, said computer program product used to achieve a shifting from a low range position to a high range position, wherein the hybrid powertrain comprises an internal combustion engine;
Dependencies are inferred from the claim text.