A powertrain assembly includes one or several electric motors, a gearbox comprising a gearbox housing, an axle comprising: an axle housing, movable parts inside axle housing, comprising a shaft for a wheel, a lubricating system comprising an axle lubricating device comprising an axle oil sump and a gearbox lubricating device comprising a gearbox oil sump inside the gearbox housing which is a dry sump having an oil storage area which is separate from said gearbox oil sump, a scavenge pump and a first duct configured to retrieve oil from gear box oil sump and to convey the retrieved oil up to the oil storage area, and a main pump and a second duct configured to convey oil from the storage oil area to lubricate the gears of the gearbox.

Methods and systems for an electric drive axle of a vehicle are provided. A gear train in an electric drive axle system includes, in one example, an input shaft configured to rotationally couple to an electric motor-generator and including a first gear and an intermediate shaft including a second gear rotationally coupled to the first gear and a third gear and a fourth gear each configured to rotationally couple to a separate gear on an output shaft. In this example, the second gear, the third gear, and the fourth gear have different sizes, the third gear includes an axial extension having at outer surface, and an interior surface of the second gear circumferentially surrounds at least a portion of the outer surface of the axial extension.

A power train for an electric vehicle may include an input shaft to which a motor is fixedly connected; an output shaft mounted in parallel to the input shaft; a first driving gear and a first driven gear mounted on the input shaft and the output shaft, respectively, to be gear-engaged with each other; a second driving gear and a second driven gear mounted on the input shaft and the output shaft, respectively, to be gear-engaged with each other; a one-way clutch mounted in a first path where power is transmitted from the input shaft to the output shaft through the first driving gear and the first driven gear; a restraining mechanism mounted to selectively restrain the one-way clutch from freely rotating; and a friction clutch mounted to regulate a second path where power is transmitted from the input shaft to the output shaft through the second driving gear and the second driven gear.

A powertrain for an electric vehicle, may include: an input shaft and an output shaft mounted in parallel to each other; first and second power transmission mechanisms provided to transmit power from the input shaft to the output shaft at two gear ratios different from each other; a one-way clutch included in the first power transmission mechanism; a friction clutch included in the second power transmission mechanism; and a bypass mechanism provided to form a power transmission path that bypasses the one-way clutch and a power transmission path that bypasses the friction clutch.

An axle assembly having a housing assembly, an electric motor module, and a transmission module. A first lubricant passage may route lubricant from the housing assembly to the transmission housing cavity of the transmission module. The first lubricant passage may extend through a motor housing, a motor cover, and a first transmission housing.

Methods and systems for an electric drive axle of a vehicle are provided. A gear train in an electric drive axle system includes, in one example, an input shaft configured to rotationally couple to an electric motor-generator and including a first gear and an intermediate shaft including a second gear rotationally coupled to the first gear and a third gear and a fourth gear each configured to rotationally couple to a separate gear on an output shaft. In this example, the second gear, the third gear, and the fourth gear have different sizes, the third gear includes an axial extension having at outer surface, and an interior surface of the second gear circumferentially surrounds at least a portion of the outer surface of the axial extension.

Methods and systems for an electric drive axle of a vehicle are provided. A gear train in an electric drive axle system includes, in one example, an input shaft configured to rotationally couple to an electric motor-generator and including a first gear and an intermediate shaft including a second gear rotationally coupled to the first gear and a third gear and a fourth gear each configured to rotationally couple to a separate gear on an output shaft. In this example, the second gear, the third gear, and the fourth gear have different sizes, the third gear includes an axial extension having at outer surface, and an interior surface of the second gear circumferentially surrounds at least a portion of the outer surface of the axial extension.

A gear transmission having a speed changing section includes a speed changing gear for setting a speed stage and a shift gear slidably mounted on a rotation support shaft and operated to engage and disengage with the speed changing gear, the speed changing section configured to speed-change inputted power and to output the resultant power via the rotation support shaft. An arrangement is provided for facilitating engagement of the shift gear with the speed changing gear even when respective end faces of the shift gear and the speed changing gear hit each other. A transmission mechanism (20B) is provided for outputting power of a rotation support shaft (24) to a traveling device. The transmission mechanism (20B) has a transmission flexibility portion (80) which allows free rotation of the rotation support shaft (24) by a set rotation angle.

A power train for an electric vehicle may include an input shaft to which a motor is fixedly connected; an output shaft mounted in parallel to the input shaft; a first driving gear and a first driven gear mounted on the input shaft and the output shaft, respectively, to be gear-engaged with each other; a second driving gear and a second driven gear mounted on the input shaft and the output shaft, respectively, to be gear-engaged with each other; a one-way clutch mounted in a first path where power is transmitted from the input shaft to the output shaft through the first driving gear and the first driven gear; a restraining mechanism mounted to selectively restrain the one-way clutch from freely rotating; and a friction clutch mounted to regulate a second path where power is transmitted from the input shaft to the output shaft through the second driving gear and the second driven gear.

An axle assembly having a drive pinion, a transmission, and a shift collar. The transmission may include a set of drive pinion gears. The shift collar may be rotatable about an axis with the drive pinion and may be moveable along the axis with respect to the drive pinion to selectively connect a member of the set of drive pinion gears to the drive pinion.