Drive-train with an automated group-transmission
First Claim
1. A drivetrain of a motor vehicle with a hybrid drive, the drivetrain comprising:
- an internal combustion engine (VM),an electric machine (EM); and
a semi-automatic group transmission (CT);
the semi-automatic group transmission (CT) comprising at least a main transmission (HG) and a downstream group (GP) that is in drive connection downstream of the main transmission (HG);
an input shaft (WGE) of the semi-automatic group transmission (CT) being connected, via a controllable starting clutch (AK), to the internal combustion engine (VM) of the hybrid drive;
an output shaft (WGA) of the semi-automatic group transmission (CT) being connected to an axle drive (AB); and
at least one shifting element (S1, S2) which couples the electric machine (EM) into either a force flow or a torque flow of the drivetrain,in one shift position of the at least one shifting element, the electric machine is coupled into either the force flow or the torque flow between the main transmission (HG) and the downstream group (GP) of a countershaft design andin another shift position of the at least one shifting element, the electric machine is exclusively coupled into either the force flow or the torque flow between the downstream group (GP) of the countershaft design and the axle drive (AB).
1 Assignment
0 Petitions
Accused Products
Abstract
A drivetrain of a motor vehicle, with a hybrid drive, comprising an internal combustion engine and an electric machine and a semi-automatic group transmission. The semi-automatic group transmission comprises at least a main transmission and a downstream group in drive connection downstream with the main transmission. An input shaft of the semi-automatic group transmission is connected, via a controllable starting clutch, to the internal combustion engine of the hybrid drive and an output shaft of the semi-automatic group transmission is connected to an axle drive. Depending on the shift position of at least one shifting element, the electric machine can be coupled to the force flow or the torque flow of the drivetrain between the main transmission and the downstream group of countershaft design and/or between the downstream group of a countershaft design and the axle drive.
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Citations
17 Claims
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1. A drivetrain of a motor vehicle with a hybrid drive, the drivetrain comprising:
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an internal combustion engine (VM), an electric machine (EM); and a semi-automatic group transmission (CT); the semi-automatic group transmission (CT) comprising at least a main transmission (HG) and a downstream group (GP) that is in drive connection downstream of the main transmission (HG); an input shaft (WGE) of the semi-automatic group transmission (CT) being connected, via a controllable starting clutch (AK), to the internal combustion engine (VM) of the hybrid drive; an output shaft (WGA) of the semi-automatic group transmission (CT) being connected to an axle drive (AB); and at least one shifting element (S1, S2) which couples the electric machine (EM) into either a force flow or a torque flow of the drivetrain, in one shift position of the at least one shifting element, the electric machine is coupled into either the force flow or the torque flow between the main transmission (HG) and the downstream group (GP) of a countershaft design and in another shift position of the at least one shifting element, the electric machine is exclusively coupled into either the force flow or the torque flow between the downstream group (GP) of the countershaft design and the axle drive (AB). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for operating a drivetrain comprising an internal combustion engine (VM), an electric machine (EM) and a semi-automatic group transmission (CT), the semi-automatic group transmission (CT) comprising at least a main transmission (HG) and a downstream group (GP) that is in drive connection downstream from the main transmission (HG), an input shaft (WGE) of the semi-automatic group transmission (CT) is connected, via a controllable starting clutch (AK), to the internal combustion engine (VM) of the hybrid drive and an output shaft (WGA) of the semi-automatic group transmission (CT) is connected to an axle drive (AB), at least one shifting element (S1, S2) which couples the electric machine (EM) into either a force flow or a torque flow of the drivetrain, in one shift position of the at least one shifting element, the electric machine is coupled into the force flow or the torque flow between the main transmission (HG) and the downstream group (GP) of a countershaft design and in another shift position of the at least one shifting element, the electric machine is exclusively coupled into the force flow or the torque flow between the downstream group (GP) of the countershaft design and the axle drive (AB), the method comprising the steps of:
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carrying out a gearshift in the main transmission (HG); and one of compensating or counteracting an interruption of traction force at the axle drive (AB) by operation of the electric machine (EM) of the hybrid drive. - View Dependent Claims (11, 12, 13)
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14. A drivetrain of a motor vehicle having a hybrid drive, the drivetrain comprising:
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an internal combustion engine (VM), an electric machine (EM), and an automated group transmission (CT), the automated group transmission (CT) comprising at least a main transmission (HG) and a downstream group (GP), the downstream group (GP) being drivingly connected with and located downstream from the main transmission (HG) with respect to a flow of force in the drivetrain, and the downstream group (GP) having at least one countershaft; the internal combustion engine (VM) of the hybrid drive being connectable to an input shaft (WGE) of the automated group transmission (CT) by a controllable starting clutch (AK); an output shaft (WGA) of the automated group transmission (CT) being connected to an axle drive (AB); and at least one shifting element (S1, S2) being shiftable between a plurality of shift positions, in a first shift position of the at least one shifting element, the electric machine (EM) is coupled to the flow of force in the drivetrain between the main transmission (HG) and the downstream group (GP), in a second shift position of the at least one shifting element, the electric machine (EM) is disengaged from the flow of force in the drivetrain between the main transmission (HG) and the downstream group (GP) and is coupled in the flow of force in the drivetrain between the downstream group (GP) and the axle drive (AB). - View Dependent Claims (15, 16, 17)
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Specification