An axle assembly may have at least one electric motor/generator. The motor/generator may be connected to a first sun gear. A first gear of a first planet carrier may be meshed with the first sun gear. A first ring gear may be meshed with a second gear of the first planet carrier. A second ring gear, a second sun gear and a second planet carrier may be provided. A selector sleeve may selectively connect a selector spline connected to the first ring gear and a ground for a low output speed, the selector sleeve may selectively connect the first and second ring gears with the first planet carrier for a high output speed and selector sleeve selectively connect to only the first ring gear for neutral.

An axle assembly may have at least one electric motor/generator. The motor/generator may be connected to a first sun gear. A first gear of a first planet carrier may be meshed with the first sun gear. A first ring gear may be meshed with a second gear of the first planet carrier. A second ring gear, a second sun gear and a second planet carrier may be provided. A selector sleeve may selectively connect a selector spline connected to the first ring gear and a ground for a low output speed, the selector sleeve may selectively connect the first and second ring gears with the first planet carrier for a high output speed and selector sleeve selectively connect to only the first ring gear for neutral.

The present invention discloses a method for switching modes of an electromechanical transmission system which includes a clutch CL0, a motor A, a clutch CL1, a brake B1, a motor B and three planet rows K1, K2 and K3. The electromechanical transmission system according to the present invention achieves two different structural modes of EVT1 and EVT2 by changing states of the clutch CL0 and the brake B1. The EVT1 mode is mainly a system running state at a low vehicle speed under a high driving torque demand, and the EVT2 mode is mainly a system driving state at a high vehicle speed under a low driving torque demand. Mode switching without speed difference and power interruption can be achieved by switching vehicle speed selection and reasonable adjustment of engine and motor torque.

The present invention discloses a method for switching modes of an electromechanical transmission system which includes a clutch CL0, a motor A, a clutch CL1, a brake B1, a motor B and three planet rows K1, K2 and K3. The electromechanical transmission system according to the present invention achieves two different structural modes of EVT1 and EVT2 by changing states of the clutch CL0 and the brake B1. The EVT1 mode is mainly a system running state at a low vehicle speed under a high driving torque demand, and the EVT2 mode is mainly a system driving state at a high vehicle speed under a low driving torque demand. Mode switching without speed difference and power interruption can be achieved by switching vehicle speed selection and reasonable adjustment of engine and motor torque.

An epicyclic gear system, a fluid directing ring, and a method of directing a fluid to at least one fluid passage of a carrier in an epicyclic gear system are provided. The system includes a sun gear, a plurality of planet gears disposed around the sun gear, a carrier configured for rotation relative to the sun gear and having at least one fluid passage having a fluid passage inlet for supplying a fluid to at least one of the plurality of planet gears, and a plurality of fluid directors fixed for rotation with the carrier and disposed radially inward from the fluid passage inlet. Each of the plurality of fluid directors has a directing surface configured to receive the fluid conveyed radially outwardly and direct the fluid in a direction of rotation of the carrier.

An epicyclic gear system, a fluid directing ring, and a method of directing a fluid to at least one fluid passage of a carrier in an epicyclic gear system are provided. The system includes a sun gear, a plurality of planet gears disposed around the sun gear, a carrier configured for rotation relative to the sun gear and having at least one fluid passage having a fluid passage inlet for supplying a fluid to at least one of the plurality of planet gears, and a plurality of fluid directors fixed for rotation with the carrier and disposed radially inward from the fluid passage inlet. Each of the plurality of fluid directors has a directing surface configured to receive the fluid conveyed radially outwardly and direct the fluid in a direction of rotation of the carrier.

A transmission for an electric vehicle may include a first planetary gear set; a first motor configured to input power to a first rotation element of the first planetary gear set; a differential configured to receive power output from a second rotation element of the first planetary gear set; a second motor configured to selectively provide power to a third rotation element of the first planetary gear set; a second planetary gear set including a first rotation element which is directly connected to the differential, and a second rotation element which is configured to selectively receive power from the second motor; and a third planetary gear set including a third rotation element which is directly connected to a third rotation element of the second planetary gear set, a second rotation element which is fixed, and a first rotation element which is directly connected to a selected output shaft of the differential.

A transmission (G) for a motor vehicle which has a transmission input (GW1-A), a transmission output (GW2-A), five planetary gear sets (P1, P2, P3, P4, P5) and six shifting elements (B1, B2, K1, K2, K3, B3). By selectively actuating the six shifting elements (B1, B2, K1, K2, K3, B3), ten forward gears and one reverse gear can be selected between the transmission input (GW1-A) and the transmission output (GW2-A). Further, the drive train is typically incorporated into a motor vehicle.

A transmission (G) for a motor vehicle which has a transmission input (GW1-A), a transmission output (GW2-A), five planetary gear sets (P1, P2, P3, P4, P5) and six shifting elements (B1, B2, K1, K2, K3, B3). By selectively actuating the six shifting elements (B1, B2, K1, K2, K3, B3), ten forward gears and one reverse gear can be selected between the transmission input (GW1-A) and the transmission output (GW2-A). Further, the drive train is typically incorporated into a motor vehicle.

A planetary carrier includes a plurality of pinion gears, a plurality of pinion shafts that are each inserted in the corresponding pinion gear, a first supporting plate that supports one end of each of the pinion shafts, a second supporting plate that supports the other end of each of the pinion shafts, and a plurality of bridge plates, one end of each of which is joined to the first supporting plate via a welding portion and the other end of each of which is joined to the second supporting plate via a welding portion and which connects the first and second supporting plates.