Power-dividing gear train assembly for motor vehicles
First Claim
1. A power-dividing gear train assembly for motor vehicles, comprising:
- a differential having at least one input shaft and at least first and second output shafts,a superimposing gear train comprising a plurality of epicyclic gear trains drivingly connected indirectly or directly with at least one of the first and second output shafts and a drive motor drivingly coupled to the epicyclic gear trains, the superimposing gear train being arranged and constructed to change output torque at the first and second output shafts, wherein the superimposing gear train has a transmission ratio that is set such that the drive motor is still when the first and second output shafts are rotating synchronously, andat least one torque-reducing epicyclic gear train having three shafts, wherein two of said shafts are respectively connected to two shafts of the differential and the at least one torque-reducing epicyclic gear train is connected upstream of the superimposing gear train.
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Accused Products
Abstract
A power-dividing gear train assembly for motor vehicles includes a differential that outputs torque to two output shafts. The output torque applied to the output shafts is changeable by using a superimposing gear train, which comprises a plurality of epicyclic gear trains and is drivingly connected indirectly or directly with the output shafts. A drive motor is drivingly coupled to the superimposing gear train and the transmission ratio of the superimposing gear train is set such that an output shaft of the drive motor is still when the output shafts are rotating synchronously. To achieve a more precise and quicker-reacting redistribution of the drive torques, at least one epicyclic gear train, which reduces torque and cooperates with the differential, is connected upstream of the superimposing gear train.
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Citations
20 Claims
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1. A power-dividing gear train assembly for motor vehicles, comprising:
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a differential having at least one input shaft and at least first and second output shafts, a superimposing gear train comprising a plurality of epicyclic gear trains drivingly connected indirectly or directly with at least one of the first and second output shafts and a drive motor drivingly coupled to the epicyclic gear trains, the superimposing gear train being arranged and constructed to change output torque at the first and second output shafts, wherein the superimposing gear train has a transmission ratio that is set such that the drive motor is still when the first and second output shafts are rotating synchronously, and at least one torque-reducing epicyclic gear train having three shafts, wherein two of said shafts are respectively connected to two shafts of the differential and the at least one torque-reducing epicyclic gear train is connected upstream of the superimposing gear train. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification