Abstract: An electrical axle drive device includes at least one first electrical machine, which has a stator and a rotor rotatable around a machine axis of rotation relative to the stator. A gear unit is drivable by the first electrical machine having at least one first planetary gear stage drivable by the first electrical machine and at least one first spur gear stage drivable by the first electrical machine. The device also includes at least one drive wheel of the motor vehicle being able to be rotated around a wheel axis of rotation running parallel to the machine axis of rotation and being drivable by the first electrical machine via the gear unit.

Abstract: A clutch assembly includes a clutch hub, a clutch drum disposed about the clutch hub, a first gear connected to the clutch drum, the first gear configured to be coupled with a first shaft, the clutch hub configured to be coupled with a second shaft, a clutch pack disposed between the clutch hub and the clutch drum, and an air-actuated piston assembly for selective actuation of the clutch pack to connect or disconnect two drive axles in a tandem axle assembly. The clutch assembly includes a plurality of lever arms disposed between the piston assembly and the clutch pack. Each lever arm extending to engage the piston and the clutch pack. Each lever arm may be pivotally mounted to a lever carrier plate or to a fixed portion of the piston housing.

Abstract: An electrical axle drive device includes at least one first electrical machine, which has a stator and a rotor rotatable around a machine axis of rotation relative to the stator. A gear unit is drivable by the first electrical machine having at least one first planetary gear stage drivable by the first electrical machine and at least one first spur gear stage drivable by the first electrical machine. The device also includes at least one drive wheel of the motor vehicle being able to be rotated around a wheel axis of rotation running parallel to the machine axis of rotation and being drivable by the first electrical machine via the gear unit.

Abstract: A clutch assembly includes a clutch hub, a clutch drum disposed about the clutch hub, a first gear connected to the clutch drum, the first gear configured to be coupled with a first shaft, the clutch hub configured to be coupled with a second shaft, a clutch pack disposed between the clutch hub and the clutch drum, and an air-actuated piston assembly for selective actuation of the clutch pack to connect or disconnect two drive axles in a tandem axle assembly. The clutch assembly includes a plurality of lever arms disposed between the piston assembly and the clutch pack. Each lever arm extending to engage the piston and the clutch pack. Each lever arm may be pivotally mounted to a lever carrier plate or to a fixed portion of the piston housing.

Abstract: In a motor vehicle drive train arrangement with at least one main drive train for driving a main drive axle, and at least one auxiliary drive train which is driven via the main drive train and connected to a secondary drive axle which can be driven via the auxiliary drive train, the secondary drive axle is linked to the auxiliary drive train without an axle differential and the secondary drive axle includes controllable couplers for selectively coupling the secondary drive axle wheels to the auxiliary drive train.

Abstract: A motor vehicle differential gear has at least one housing part as a first gear part, and a crown wheel as a second gear part. The first and second gear parts are connected via respective first connection surfaces running in the axial direction by a press fit, and via respective second connection surfaces running at an angle to the axial direction, forming a welding seam. One of the gear parts is formed from a steel and the other gear part from a cast iron material, as well as such a differential gear in which the second connection surfaces connect directly to the first connection surfaces.

Abstract: In a motor vehicle drive arrangement having a main drive train for driving a main axle and an auxiliary drive train for driving an auxiliary drive axle, with a power shift clutch for connecting the auxiliary drive train to the main drive train, the auxiliary drive train comprises at least one switching unit for engaging the power shift clutch which is arranged in the power flow in series with the switching unit without a differential speed.

Abstract: A motor vehicle differential gear has at least one housing part as a first gear part, and a crown wheel as a second gear part. The first and second gear parts are connected via respective first connection surfaces running in the axial direction by a press fit, and via respective second connection surfaces running at an angle to the axial direction, forming a welding seam. One of the gear parts is formed from a steel and the other gear part from a cast iron material, as well as such a differential gear in which the second connection surfaces connect directly to the first connection surfaces.

Abstract: In a motor vehicle drive train device with a transmission output shaft, a main drive train driven by the transmission output shaft, which has an axle drive for driving a main drive axle, an auxiliary drive train driven by the transmission output shaft, which has an axle drive for driving an auxiliary drive axle, a clutch unit for the switchable connection of the axle drive to the transmission output shaft, the axle drive of the main drive train and the axle drive of the auxiliary drive train have different transmission ratios and a transmission gearing for adapting a drive transmission ratio of the auxiliary drive train to a drive transmission ratio of the main drive train is adapted to compensate for the different transmission ratios of the main and the auxiliary drive axles.

Abstract: In a motor vehicle drive train arrangement with at least one main drive train for driving a main drive axle, and at least one auxiliary drive train which is driven via the main drive train and connected to a secondary drive axle which can be driven via the auxiliary drive train, the secondary drive axle is linked to the auxiliary drive train without an axle differential and the secondary drive axle includes controllable couplers for selectively coupling the secondary drive axle wheels to the auxiliary drive train.

Abstract: In a motor vehicle drive arrangement having a main drive train for driving a main axle and an auxiliary drive train for driving an auxiliary drive axle, with a power shift clutch for connecting the auxiliary drive train to the main drive train, the auxiliary drive train comprises at least one switching unit for engaging the power shift clutch which is arranged in the power flow in series with the switching unit without a differential speed.

Abstract: In a motor vehicle drive train device with a transmission output shaft, a main drive train driven by the transmission output shaft, which has an axle drive for driving a main drive axle, an auxiliary drive train driven by the transmission output shaft, which has an axle drive for driving an auxiliary drive axle, a clutch unit for the switchable connection of the axle drive to the transmission output shaft, the axle drive of the main drive train and the axle drive of the auxiliary drive train have different transmission ratios and a transmission gearing for adapting a drive transmission ratio of the auxiliary drive train to a drive transmission ratio of the main drive train is provided.