A combination engine starter and electric power generator device for a work vehicle has an electric machine and a gear set mounted to the electric machine. The gear set is configured to receive rotational input from the electric machine and from the work vehicle engine. The gear set mechanically couples the electric machine and the engine in first and second power flow directions in which in the first power flow direction the gear set effects a first gear ratio and in the second power flow direction the gear set effects a second gear ratio.

A vehicle transfer case is provided including input and output shafts mounted within a housing, a secondary shaft selectively driven by the output shaft, a first hub having an inner diameter splined section having a first extreme neutral position with exclusive torsional engagement with the output shaft, and in a second intermediate high position having torsional engagement with the output shaft and input shafts, and in a third extreme low position having exclusive torsional engagement with the input shaft. A second hub is provided, rotatably mounted on the first hub and axially fixed therewith. The second hub is torsionally fixed to the output shaft, and a shift fork is provided to translate the second hub. A planetary gear set is provided, having a ring gear, a plurality of planet gears connected to each other by a carrier and a sun gear; and wherein in the extreme neutral position the output shaft is disengaged from the input shaft, and in the second intermediate position the input shaft is directly connected to the output shaft without rotating the planetary gear set, and in the extreme third position the first hub torsionally connects the input shaft to the sun gear, and the second hub is connected with the carrier.

A transfer case includes primary and secondary output shafts, along with a secondary torque transfer mechanism and a locking mechanism, which are configured to selectively couple the primary and secondary output shafts. The secondary torque transfer mechanism comprises a sprocket coupled to the secondary output shaft, and a plate clutch coupled to the sprocket to selectively form a friction coupling with the primary output shaft. The locking mechanism selectively couples the primary output shaft to the sprocket, and includes a locking sleeve and an actuator that moves the locking sleeve between a first position and a second position. In the first position, the locking sleeve forms a first splined connection with the primary output shaft and forms a second splined connection with the sprocket. In the second position, the locking sleeve forms the first splined connection with the primary output shaft and forms a second splined connection with the sprocket.

An electric powertrain includes a first electric motor that has an uninterrupted connection with a drive shaft of a vehicle. The electric powertrain further includes a second electric motor that has an interruptible connection with the drive shaft. In one form, this interruptible connection includes a clutch. The electric powertrain further includes a first gear train in the form of a first planetary gear and a second gear train in the form of a second planetary gear. The clutch in one variation includes a positive clutch in the form of a dog clutch. The dog clutch has a clutch suspension configured to deflect a clutch collar when gearing is misaligned during shifting.

An electric vehicle transmission mechanism which is applied to drive a chain wheel of an electric vehicle is provided. The electric vehicle transmission mechanism includes a transmission shaft, an output shaft, a lower bearing and an upper bearing. The transmission shaft is connected to the chain wheel and has a transmission axial direction, and the transmission shaft includes a transmission portion. The output shaft includes an output portion engaged with the transmission portion, and the output shaft has an output axial direction substantially perpendicular to the transmission axial direction. The lower bearing is sleeved on the output shaft. The upper bearing is sleeved on the output shaft and located between the lower bearing and the output portion.

An electric vehicle transmission mechanism which is applied to drive a chain wheel of an electric vehicle is provided. The electric vehicle transmission mechanism includes a transmission shaft, an output shaft, a lower bearing and an upper bearing. The transmission shaft is connected to the chain wheel and has a transmission axial direction, and the transmission shaft includes a transmission portion. The output shaft includes an output portion engaged with the transmission portion, and the output shaft has an output axial direction substantially perpendicular to the transmission axial direction. The lower bearing is sleeved on the output shaft. The upper bearing is sleeved on the output shaft and located between the lower bearing and the output portion.

A transmission case includes: a main transmission input shaft to which the driving force is transmitted from the engine; and a main transmission output shaft fit on the main transmission input shaft in a relatively rotatable manner. The main transmission input shaft is provided with a hydraulic pump unit, a cylinder block, and a fixed capacity hydraulic motor unit, forming a hydraulic mechanical transmission, arranged in series. Shifted driving force is transmitted to the main transmission output shaft via the fixed capacity hydraulic motor unit. The transmission case includes a planetary gear mechanism and a transmission shaft with which the shifted driving force via the main transmission output shaft and the combined driving force via the planetary gear mechanism can be transmitted.

A transmission case includes: a main transmission input shaft to which the driving force is transmitted from the engine; and a main transmission output shaft fit on the main transmission input shaft in a relatively rotatable manner. The main transmission input shaft is provided with a hydraulic pump unit, a cylinder block, and a fixed capacity hydraulic motor unit, forming a hydraulic mechanical transmission, arranged in series. Shifted driving force is transmitted to the main transmission output shaft via the fixed capacity hydraulic motor unit. The transmission case includes a planetary gear mechanism and a transmission shaft with which the shifted driving force via the main transmission output shaft and the combined driving force via the planetary gear mechanism can be transmitted.

A drive assembly receives rotational power from an input shaft rotatable about a rotation axis. The drive assembly includes a drive housing to which is mounted a wheel bearing support of a wheel mount that is configured to rotate about the rotation axis on a wheel bearing assembly. A planetary set is coupled between the input shaft and the wheel mount to selectably cause rotation of the wheel mount. The planetary set substantially fits within axial borders of the wheel bearing support and within an inner radial dimension of the wheel bearing support.

A drive assembly receives rotational power from an input shaft rotatable about a rotation axis. The drive assembly includes a drive housing to which is mounted a wheel bearing support of a wheel mount that is configured to rotate about the rotation axis on a wheel bearing assembly. A planetary set is coupled between the input shaft and the wheel mount to selectably cause rotation of the wheel mount. The planetary set substantially fits within axial borders of the wheel bearing support and within an inner radial dimension of the wheel bearing support.