A drive assembly for a work vehicle has a drive housing including at least one housing element forming a reaction member, a drive shaft rotatable about a drive axis, and a planetary gear set coupled to the drive shaft and configured to selectively rotate an output element. The drive assembly also includes at least one clutch arrangement having at least one clutch ring configured to selectively interact with the planetary gear set to effect a rotation speed of the output element. At least one actuator is configured to axially drive the clutch ring along the drive axis. A retention mechanism is configured to retain the clutch ring at an axial position along the drive axis. The retention mechanism includes a detent ball, a detent groove and a resilient member configured to urge the detent ball into the detent groove to retain the clutch ring at the axial position.

A vehicle transmission using a gearset. Multi-mode clutches selectively couple components of the gearset. The transmission operates in and shifts between a first forward gear and a second forward gear using a change in input rotation. An electric motor coupled to the input may be used to change the input rotation direction.

An electric vehicle transmission has a first driveshaft configured to be coupled to a first electric machine, and a main drive output shaft configured to be coupled to at least one drive axle. At least one gear-shifting element is provided, which when respectively actuated enables the first driveshaft and the main drive output shaft to be coupled to one another by way of a gear. The transmission can be provided in an electric vehicle in which electric machines can be integrated to provide drive power and to operate an auxiliary drive output. In addition, a second driveshaft serves to be coupled to a second electric machine and which can be coupled to an auxiliary driveshaft. In this case a shifting element is present, which when actuated couples the second driveshaft with the main drive output shaft. A method of operating an electric utility vehicle drive system is also disclosed.

Methods and systems are provided for a dual motor electric transmission configured with two dual synchronizers to reduce torque interruption during gear shifting. In one example, a method may include dropping torque of a first electric motor, allowing a first synchronizer to shift from a first gear arrangement to a second gear arrangement, and compensating for dropped torque with a second electric motor. The method may be repeated to shift a second synchronizer from the first gear arrangement to the second gear arrangement, allowing uninterrupted torque supply during gear shifting.

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.

An electric drive axle of a vehicle includes an electric motor having an output shaft. An idler assembly is drivingly coupled to the electric motor and a differential. The idler assembly includes a first gear-clutch assembly to facilitate a first gear ratio and a second gear-clutch assembly to facilitate a second gear ratio.

An electric powertrain for a vehicle provides electric propulsion to the vehicle. The electric powertrain includes a first electric motor linked to a first gear module through a motor shaft, said first gear module including a primary shaft on which are arranged a first primary gear and a second primary gear, a second gear module including a secondary shaft on which are arranged a first secondary gear that is meshing with the second primary gear, at least one countershaft on which are arranged a first quaternary gear and a second quaternary gear, a coupling member arranged at the first extremity of the primary shaft.

A two-stage speed-change output device includes a main axle, on which a motor assembly and first and second speed-change assemblies are mounted. The first and second speed-change assemblies are mounted inside an output shell by first and second one-way clutching elements, both operating in a forward direction. The motor assembly is operable to rotate backward to drive the first one-way clutching element to drive the output shell to rotate in the forward direction, while the second one-way clutching element idles. The motor assembly is also operable to rotate forward to drive the second one-way clutching element to drive the output shell to rotate in the forward direction, while the first one-way clutching element idles. The device realizes speed change for two stages to drive the output shell in the same direction with forward and backward rotations of the motor assembly.

Motor driven systems with optimized performance and efficiency are provided. A drive system includes a motor and a gear system coupled with the motor by a shaft. The gear system includes a pair of input gears disposed on the shaft, and a pair of transfer shafts including transfer gears meshing with the input gears. The gear system is configured to cancel axial, radial and/or tangential forces for minimized net force at the shaft.

A vehicle powertrain comprising a first and second electric machines, and a transmission arranged to transmit torque from said electric machines to a driving axle, the transmission comprising: first and second input shafts arranged to be driven by the machines, respectively, a common output shaft, a first gear set comprising:
first and second input gears via which torque is transmittable from the respective input shafts, to the output shaft; a second gear set comprising:
third and fourth input gears via which torque is transmittable from the respective input shafts to the output shaft; means for disconnecting each machine from each other and from the output shaft; an intermediate shaft drivable by the first and/or the second input gear; and an auxiliary gear set having two gear ratios arranged between the intermediate and common output shafts, at least the first gear set being arranged to drive the output shaft via the intermediate shaft and the auxiliary gear set.