Transmission and drive system of a motor vehicle
A transmission ( 2 ) includes a first input shaft ( 7 ) for a first prime mover ( 3 ), a second input shaft ( 8 ) for a second prime mover ( 4 ), as well as a first output shaft ( 9 ) and a second output shaft ( 10 ), which are each coupleable to a drive output ( 11 ). A first sub-transmission ( 5 ) includes the first input shaft ( 7 ), and fixed gears ( 12, 13 ) are arranged on the first input shaft ( 7 ). Each of these fixed gears ( 12, 13 ) meshes with a respective idler gear ( 14, 15 ) on the first output shaft ( 9 ) and with a respective idler gear ( 16, 17 ) on the second output shaft ( 10 ). Shift elements (A, B, C, D) are associated with the output shafts ( 9, 10 ), depending on which the idler gears of the output shafts are coupleable to the particular output shaft in a rotationally fixed manner. A second sub-transmission ( 6 ) includes the second input shaft ( 8 ) and is designed as a planetary transmission. A ring gear ( 22 ) forms the second input shaft ( 8 ). A carrier ( 23 ) is coupled to one of the output shafts ( 9, 10 ). Shift elements (F, E) are associated with the planetary transmission, via which, depending on their shift position, the sun gear ( 24 ) is fixedly connectable to the housing or the planetary transmission is bringable into direct drive. The planetary transmission is arranged coaxially to the first input shaft ( 7 ). The carrier ( 23 ) of the planetary transmission is permanently coupled to one of the output shafts via a spur gear stage.
1. A transmission ( 2 ) for a motor vehicle, comprising:
a first input shaft ( 7 ) for a first prime mover ( 3 );
a second input shaft ( 8 ) for a second prime mover ( 4 );
a first output shaft ( 9 ) and a second output shaft ( 10 ), each of the first and second output shafts ( 9 , 10 ) coupleable to a drive output ( 11 );
a first sub-transmission ( 5 ) of the transmission ( 2 ) includes the first input shaft ( 7 ), a plurality of fixed gears ( 12 , 13 ) are arranged on the first input shaft ( 7 ), each of the fixed gears ( 12 , 13 ) of the first input shaft ( 7 ) meshing with a respective idler gear ( 14 , 15 ) arranged on the first output shaft ( 9 ) and with a respective idler gear ( 16 , 17 ) arranged on the second output shaft ( 10 ), each of the idler gears ( 14 , 15 , 16 , 17 ) of the first and second output shafts ( 9 , 10 ) coupleable to an associated one of the first and second output shafts ( 9 , 10 ) in a rotationally fixed manner via a first plurality of shift elements (A, B, C, D),
a second sub-transmission ( 6 ) of the transmission ( 2 ) includes the second input shaft ( 8 ), the second sub-transmission ( 6 ) configured as a planetary transmission with a sun gear ( 24 ), a ring gear ( 22 ), and a carrier ( 23 ), the ring gear ( 22 ) forming the second input shaft ( 8 ) of the second sub-transmission ( 6 ), the carrier ( 23 ) coupled to one of the output shafts ( 9 , 10 ), the sun gear ( 24 ) fixedly connectable to the housing or configured to bring the planetary transmission into direct drive via a second plurality of shift elements (F, E),
wherein the planetary transmission is arranged coaxially to the first input shaft ( 7 ), and
wherein the carrier ( 23 ) of the planetary transmission is permanently coupled to one of the output shafts ( 9 , 10 ) via a spur gear stage.
2. The transmission of claim 1 , wherein the carrier ( 23 ) of the planetary transmission is constantly coupled to a fixed gear ( 21 ) of one of the output shafts ( 9 , 10 ) via an idler gear ( 20 ) of the first input shaft ( 7 ).
3. The transmission of claim 1 , wherein the second prime mover ( 4 ) is directly coupleable to the second input shaft ( 8 ) of the second sub-transmission ( 6 ) such that the second prime mover ( 4 ) is directly operatively connected to the second input shaft ( 8 ) of the second sub-transmission ( 6 ).
4. The transmission of claim 1 , wherein the second prime mover ( 4 ) is indirectly coupleable to the second input shaft ( 8 ) of the second sub-transmission ( 6 ) such that the second prime mover ( 4 ) is indirectly operatively connected to the second input shaft ( 8 ) of the second sub-transmission ( 6 ).
5. The transmission of claim 1 , further comprising a further shift element (G) associated with the planetary transmission, the further shift element (G) operable for setting a speed superimposition mode at the planetary transmission for the first prime mover ( 3 ) and the second prime mover ( 4 ), the first prime mover ( 3 ) coupled to the sun gear ( 24 ) of the planetary transmission in the speed superimposition mode, the second prime mover ( 4 ) coupled to the ring gear ( 22 ) of the planetary transmission in the speed superimposition mode, the carrier ( 23 ) of the planetary transmission coupled to the output shaft ( 9 ) in the speed superimposition mode.
6. The transmission of claim 1 , further comprising a third prime mover ( 27 ) configured as an electric machine, the third prime mover ( 27 ) operatively connected to the first input shaft ( 7 ).
7. The transmission of claim 1 , further comprising a separating clutch (KO) associated with the first input shaft ( 7 ) for the selectively connecting the first prime mover ( 3 ) to the first input shaft ( 7 ).
8. The transmission of claim 7 , wherein separating clutch (KO) is configured as a form-locking separating clutch or as a friction-locking separating clutch.
9. A transmission system of a motor vehicle, comprising:
the transmission ( 2 ) of claim 1 ;
a first prime mover ( 3 ) coupled to the first input shaft ( 7 );
a second prime mover ( 4 ) coupled to the second input shaft ( 8 ); and
a drive output ( 11 ) coupled to the first output shaft ( 9 ) and to the second output shaft ( 10 ).