DRIVE TRAIN HAVING AN AUTOMATED AUXILIARY TRANSMISSION
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Accused Products
Abstract
A drive train of a motor vehicle, having a hybrid drive comprising an internal combustion engine and an electric machine, and an automatic group transmission connected between the hybrid drive and an axle drive. The group transmission has at least a main gearing in a countershaft design, having a main shaft and at least one countershaft, a front-mounted group, particularly implemented as a splitter group, upstream in terms of drive technology of the main gearing, and/or a rear-mounted group, particularly implemented as a range group, downstream in terms of drive technology of the main gearing. An input shaft of the group transmission is connected, via a controllable startup clutch, to the internal combustion engine, and an output shaft of the group transmission is connected to the axle drive, and the electric machine of the hybrid drive is connected to the at least one countershaft.
62 Citations
29 Claims
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1-14. -14. (canceled)
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15. A drive train of a motor vehicle comprising:
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a hybrid drive comprising an internal combustion engine (VM) and an electric machine (EM), and an automatic group transmission (CT) connected between the hybrid drive and an axle drive (AB), the automatic group transmission (CT) having at least one main gearing (HG) in a countershaft design having a main shaft (WH) and at least one countershaft (WVG1, WVG2), at least one of a front-mounted group (GV) being located upstream, in terms of drive technology, of the main gearing (HG) and designed as a splitter group, a rear-mounted group (GP) being located downstream, in terms of drive technology, of the main gearing (HG) and designed as a range group, an input shaft (WGE) of the automatic group transmission (CT) being connected, via a controllable startup clutch (AK), to the internal combustion engine (VM) of the hybrid drive, an output shaft (WGA) of the automatic group transmission (CT) being connected to the axle drive (AB), and the electric machine (EM) of the hybrid drive being connected to the at least one countershaft (WVG1, WVG2). - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A method of operating a drive train of a motor vehicle, having a hybrid drive comprising an internal combustion engine (VM) and an electric machine (EM), and an automatic group transmission (CT) connected between the hybrid drive and an axle drive (AB), the automatic group transmission (CT) having at least one main gearing (HG) in a countershaft design having a main shaft (WH) and at least one countershaft (WVG1, WVG2), at least one of a front-mounted group (GV) being located upstream, in terms of drive technology, of the main gearing (HG) and designed as a splitter group, and a rear-mounted group (GP) being located downstream, in terms of drive technology, of the main gearing (HG) and designed as a range group, an input shaft (WGE) of the automatic group transmission (CT) being connected, via a controllable startup clutch (AK), to the internal combustion engine (VM) of the hybrid drive, and an output shaft (WGA) of the automatic group transmission (CT) being connected to the axle drive (AB), the electric machine (EM) of the hybrid drive being connected to the at least one countershaft (WVG1, WVG2), the method comprising the steps of:
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supplying an electric consumer with energy, by driving the electric consumer with the internal combustion engine (VM), when the motor vehicle is at a standstill; shifting the group transmission (CT) to form a drive connection between the internal combustion engine (VM) and the electric consumer; disconnecting a drive connection between the internal combustion engine (VM) and the axle drive (AB); shifting the group transmission (CT), when the motor vehicle is traveling, to form a drive connection between the internal combustion engine (VM) and the electric consumer, and the internal combustion engine (VM) being drivingly connected to the axle drive (AB). - View Dependent Claims (23, 24, 25, 26, 27, 28)
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29. A drive train of a motor vehicle, the drive train comprising:
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a hybrid drive comprising an internal combustion engine and an electric machine; an automatic group transmission comprising a main gearing group, a splitter group being located upstream from the main gearing group with respect to a flow of drive through the automatic group transmission, and a range group being located downstream from the main gearing group with respect to the flow of drive through the automatic group transmission, the main gearing group having a main shaft and at least one countershaft; an input shaft of the automatic group transmission being connected, via a controllable startup clutch, to the internal combustion engine and an output shaft of the automatic group transmission being continuously connected to the axle drive; and the electric machine of the hybrid drive is connected to the at least one countershaft such that the flow of drive from the electric machine to the at least one countershaft bypasses the input shaft of the automatic group transmission and the flow of drive from the internal combustion engine only passes into the automatic group transmission via the input shaft.
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Specification