| 摘要 |
A differential gearing unit with controllable torque and rotational speed distribution, composed of a housing ( 1 ), a differential gearing ( 6 ), a superposition gearing ( 7 ) and an auxiliary drive ( 8 ), with the differential gearing ( 6 ) comprising an input member ( 11 ) which is driven by the vehicle engine, and two output members ( 15, 16 ) with output shafts ( 3, 4 ), and with the superposition gearing ( 7 ) being a planetary gear set which is connected to two members ( 15, 16 ) of the differential gearing ( 6 ) and to the auxiliary drive ( 8 ). In order to provide precise control with a low-power auxiliary drive, the superposition gearing ( 7 ) comprises a first ( 22 ) and a second ( 27 ) sun gear, a first ( 20 ) and a second ( 25 ) ring gear and first ( 21 ) and second ( 26 ) planet gears on a common planet carrier ( 28 ), with the first ( 21 ) and second ( 26 ) planet gears meshing in each case with the first ( 22 ) and second sun gear ( 27 ) respectively and with the first ( 20 ) and second ring gear ( 25 ) respectively, and with a ring gear being rotationally fixedly connected to an output shaft.
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