Method for controlling a hybrid driveline for reducing electrical losses
First Claim
1. A method to control a hybrid powertrain, comprising a combustion engine;
- a gearbox with an input shaft and an output shaft, which combustion engine is connected to the input shaft;
a first planetary gear, which is 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 same method comprising the steps;
a) engaging a gear corresponding to the at least one gear pair, which is connected with the first planetary gear, in the gearbox or corresponding to the at least one gear pair, connected with the second planetary gear and the output shaft;
b) selecting a gear by connecting two rotatable components in the first planetary gear with each other, with the use of a first coupling device;
or by connecting two rotatable components in the second planetary gear with each other, with the use of a second coupling device; and
c) controlling a switch, connected to the first and the second electrical machines, in such a way that the first electrical machine is set into a waiting state, if the second coupling device connects the two rotatable components of the second planetary gear with each other, and in such a way that the second electrical machine is set into a waiting state, if the first coupling device connects the two rotatable components of the first planetary gear with each other.
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Accused Products
Abstract
A method is provided to control a hybrid powertrain, comprising: a) engaging a gear corresponding to either a gear pair connected with a first planetary gear in the gearbox or corresponding to a gear pair connected with a second planetary gear and an output shaft; b) selecting a gear by connecting two rotatable components in the first planetary gear with each other, via a first coupling device and/or connecting two rotatable components in the second planetary gear with each other, via a second coupling device; and c) controlling a switch such that a first electrical machine is set into a waiting state, if the second coupling device connects the two rotatable components of the second planetary gear with each other, and such that a second electrical machine is set into a waiting state, if the first coupling device connects the two rotatable components of the first planetary gear with each other.
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Citations
12 Claims
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1. A method to control a hybrid powertrain, comprising a combustion engine;
- a gearbox with an input shaft and an output shaft, which combustion engine is connected to the input shaft;
a first planetary gear, which is 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 same method comprising the steps;a) engaging a gear corresponding to the at least one gear pair, which is connected with the first planetary gear, in the gearbox or corresponding to the at least one gear pair, connected with the second planetary gear and the output shaft; b) selecting a gear by connecting two rotatable components in the first planetary gear with each other, with the use of a first coupling device;
or by connecting two rotatable components in the second planetary gear with each other, with the use of a second coupling device; andc) controlling a switch, connected to the first and the second electrical machines, in such a way that the first electrical machine is set into a waiting state, if the second coupling device connects the two rotatable components of the second planetary gear with each other, and in such a way that the second electrical machine is set into a waiting state, if the first coupling device connects the two rotatable components of the first planetary gear with each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- a gearbox with an input shaft and an output shaft, which combustion engine is connected to the input shaft;
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11. A vehicle with a hybrid drive line, said hybrid drive line comprising:
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a combustion engine; a gearbox with an input shaft and an output shaft, which combustion engine is connected to the input shaft; a first planetary gear which is 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; at least one gear pair, connected with the second planetary gear and the output shaft; and an electronic control device set up to control the gearbox, said electronic control device configured for; a) engaging a gear corresponding to the at least one gear pair, which is connected with the first planetary gear, in the gearbox, or corresponding to the at least one gear pair, connected with the second planetary gear and the output shaft; b) selecting a gear by connecting two rotatable components in the first planetary gear with each other, with the use of a first coupling device;
or by connecting two rotatable components in the second planetary gear with each other, with the use of a second coupling device; andc) controlling a switch, connected to the first and the second electrical machines, in such a way that the first electrical machine is set into a waiting state, if the second coupling device connects the two rotatable components of the second planetary gear with each other, and in such a way that the second electrical machine is set into a waiting state, if the first coupling device connects the two rotatable components of the first planetary gear with each other.
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12. A computer program product comprising computer program code stored on a non-transitory computer readable medium readable by a computer, said computer program product used to control a hybrid powertrain, comprising a combustion engine;
- a gearbox with an input shaft and an output shaft, which combustion engine is connected to the input shaft;
a first planetary gear, which is 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,said computer program code comprising computer instructions to cause one or more computer processors to perform the operations of; a) engaging a gear corresponding to the at least one gear pair, which is connected with the first planetary gear, in the gearbox, or corresponding to the at least one gear pair, connected with the second planetary gear and the output shaft; b) selecting a gear by connecting two rotatable components in the first planetary gear with each other, with the use of a first coupling device;
or by connecting two rotatable components in the second planetary gear with each other, with the use of a second coupling device; andc) controlling a switch, connected to the first and the second electrical machines, in such a way that the first electrical machine is set into a waiting state, if the second coupling device connects the two rotatable components of the second planetary gear with each other, and in such a way that the second electrical machine is set into a waiting state, if the first coupling device connects the two rotatable components of the first planetary gear with each other.
- a gearbox with an input shaft and an output shaft, which combustion engine is connected to the input shaft;
Specification