A transmission assembly for a motor vehicle drive train may include a first input element, a second input element, a first sub-transmission associated with the first input element and including a first plurality of engageable gear-step gear sets, and a second sub-transmission associated with the second input element and including a second plurality of engageable gear-step gear sets. The transmission assembly may further include a first electric machine connected to the second input element and a second electric machine. Moreover, the transmission assembly may include a first clutch, the first input element being connectable to the second input element via the first clutch. Additionally, the transmission assembly may include a second clutch, the second electric machine being connectable to the first input element via the second clutch.

A transmission arrangement for a motor vehicle drive train (10) includes a first input shaft (12), a second input shaft (24), a countershaft (40), a first sub-transmission (26), which includes a first plurality of engageable gear sets (30, 32) for establishing a number of gear steps, a second sub-transmission (28), which includes a second plurality of engageable gear sets (34, 36) for establishing a number of gear steps, and a bridge clutch (S3), which is configured for coupling the first sub-transmission (26) and the second sub-transmission (28) in order to establish at least one winding-path gear step (V1, V6).

A system for a driveline is provided. In one example a driveline may include a first and a second input shaft gear disposed on an input shaft. In one example, the first input shaft gear may selectively drivingly engage with the input shaft via a first clutch and the second input shaft gear may selectively drivingly engage with the input shaft via a second clutch. In another example, a first and a second counter shaft gear may be disposed on a countershaft and drivingly engage with the countershaft, wherein the first input shaft gear drivingly engages with the first countershaft gear and the second input shaft gear is drivingly engages with the second countershaft gear via an idler gear.

A hybrid transmission assembly for a motor vehicle powertrain may include an input shaft arrangement including a first input shaft of a first sub-transmission and a second input shaft of a second sub-transmission. The assembly may further include a first electric machine axially parallel and connected to the first input shaft, and a second electric machine axially parallel and connected to the second input shaft. The input shaft arrangement, viewed axially, is in a center of four quadrants. An axis of the first electric machine is in the first quadrant and, or alternatively, an axis of the second electric machine is in the fourth quadrant.

A shifting mechanism in which an inclination of a sleeve with respect to a shift fork is reduced while maintaining a clearance between the shift fork and the sleeve. In the shifting mechanism, an engagement groove is formed entirely around a shift sleeve, and a cutout is formed on the engagement groove. A first diameter of the shift sleeve between predetermined sites of the bottom of the engagement groove within the cutouts is shorter than a second diameter of the shift sleeve between predetermined sites of the bottom of the engagement groove. A straight-line distance between the engagement ridges formed on both ends of the shift fork is longer than the first diameter but shorter than the second diameter.

The invention relates to a hybrid transmission device (3) with two electric motors (EM1, EM2), a first transmission input shaft (7) and a second transmission input shaft (9) mounted on the first transmission input shaft (7), wherein at least one gearwheel (10, 12, 14, 16, 18) for forming a forward gear (V1, V2, V3, V4, V5, E1, E2, E3, E4, E5) is arranged on each of the transmission input shafts (7, 9), characterized in that the first electric motor (EMI) is connected to a gearwheel (18) on the first transmission input shaft (7) and the second electric motor (EM2) is connected to a gearwheel (10) on the second transmission input shaft.

The invention also relates to a motor vehicle.

A vehicle transmission includes a shaft; speed-changing gears; switching mechanisms; and a shifting mechanism. The shifting mechanism is provided with a double-meshing preventing mechanism configured to switch between a one-way state in which the switching mechanisms are hindered from moving in a downshift direction and allowed to move in an upshift direction and a free state in which the switching mechanisms are allowed to move in both the downshift direction and the upshift direction.

A fork guide groove of a drum member guides a shift fork so that a shifter member is in a reference position not engaged with first and second speed change members when the drum member is placed in a neutral position, is movable between a first speed-change position engaged with the first speed-change member and the reference position when the drum member is placed in a first operational position, and is movable between a second speed-change position engaged with the second speed-change member and the reference position when the drum member is placed in a second operational position. A slider guide groove of the drum member guides a slider member supported by a fork shaft in an axially movable manner so as not to obstruct movement of the shifter member between the reference position and the first speed-change position when the drum member is placed in the first operational position.

A propulsion system for an electric vehicle includes a first electric propulsion motor including a stator and a rotor that has a first and second output shafts that are axially opposed and define first and second torque outputs of the first electric motor. The system also includes a second electric propulsion motor including a stator and a rotor having a second output shaft with a torque output. Further, the system includes a first reduction gearbox to receive the torque supplied on the first torque output of the first electric motor where appropriate via a first selective or non-selective coupling system, a second reduction gearbox to receive the torque supplied by the second electric motor where appropriate via a second selective or non-selective coupling system, and a third coupling system for coupling the second torque output of the first electric motor to the torque output of the second electric motor.

A hybrid transmission of a countershaft design for a motor vehicle powertrain having an internal combustion engine, a first electric prime mover, and a second electric prime mover has a transmission drive shaft drivingly connected to the second electric prime mover, a first sub-transmission having a first transmission input shaft, and a second sub-transmission having a second transmission input shaft, the second transmission input shaft being drivingly connected to the first electric prime mover. The transmission further has a first coupling element, the transmission drive shaft being connectable to the internal combustion engine via the first coupling element. Moreover, the transmission has a second coupling element, the first transmission input shaft being connectable to the second transmission input shaft via the second coupling element. Additionally, the transmission has a third coupling element, the transmission drive shaft being connectable to the first transmission input shaft via the third coupling element.