Patent ID: 11885395
Assignee: ZF FRIEDRICHSHAFEN AG
Field: Transport (Mechanical engineering)
Classification: CPC B  F  Y | IPC B  F

Claim 0:
1. An electric transmission (10) for a motor vehicle drive train (12) with a first electric prime mover (14) and a second electric prime mover (18), comprising:
a first transmission input shaft (30) having a first transmission connection configured for drivingly connecting the electric transmission to the first electric prime mover;
a second transmission input shaft (32) having a second transmission connection configured for drivingly connecting the electric transmission to the second electric prime mover;
a countershaft (36);
gearwheel pairs of idler gears (42, 44, 50, 52, 62) and fixed gears (46, 48, 54, 65, 64) for forming gear steps, the gearwheel pairs arranged in multiple gear set planes, the gearwheel pairs consisting of two gearwheel pairs;
a plurality of shift elements (38, 40) for engaging the gear steps, the plurality of shift elements consisting of three shift elements (38, 40), a first gearwheel pair (42, 48) of the two gearwheel pairs drivingly connectable to the first transmission input shaft (30) by a first shift element of the three shift elements (38, 40) and drivingly connectable to the third transmission input shaft (34) by a second shift element of the three shift elements (38, 40), a second gearwheel pair (44, 46) of the two gearwheel pairs drivingly connectable to the third transmission input shaft (34) by a third shift element of the three shift elements (38, 40);
a planetary gear set (22) comprising a sun gear (24), a planet gear carrier, and a ring gear (28); and
a third transmission input shaft (34) drivingly connected to the planet gear carrier of the planetary gear set,
wherein the first transmission input shaft (30) is drivingly connected to the ring gear of the planetary gear set, and the second transmission input shaft (32) is drivingly connected to the sun gear of the planetary gear set, and
wherein all of the gear steps are shiftable without an interruption of tractive force.