Abstract: A high speed gear box including ribs, gears with holes, and oil channels configured to divide and distribute lubricating oil and contacting the lubricating oil with a high speed gear box housing wall. The high speed gear box housing and gear box cover have lubricating oil channel which supply lubricants to bearings. Output gears have holes which circulate oil throughout the high speed gear box. As lubricating oil is continuously circulated at locations which may create friction, the thermal energy, which is generated by high speed rotation of gears, shafts, and bearings is absorbed by cooling oil and transferred to housings, latent heat is dissipated to atmosphere through housing wall. This solves the overheating problem of electric high speed gear box.

Abstract: Systems are provided for a limited slip differential (LSD). The LSD comprises a two-piece differential case, an intermediate floating piece positioned in an interior of the two-piece differential case and configured to slide axially therein. The LSD, further comprises a first side gear and a second side gear meshed with gears of the intermediate floating piece, a first disc spring mounted on the first side gear and a second disc spring mounted on the second side gear, a first clutch pack mounted on the first side gear and positioned between the first disc spring and a lip of the first side gear, and a second clutch pack mounted on the second side gear and positioned between the second disc spring and a lip of the second side gear, and a shim mounted on the second side gear and positioned axially between the second disc spring and the two-piece differential case.

Abstract: The description discloses an electric drive train of an off-highway vehicle. The drive train comprising: a drive axle; a gearbox connected to the drive axle, where the gearbox comprises a gear train, where the gear train comprises an input gear, an intermediate gear, a PTO output gear, and a disconnect clutch configured to selectively couple the intermediate gear to the drive axle; an electric motor, where the electric motor is mounted on the gearbox in a longitudinal direction of a vehicle and coupled to the input gear; and a PTO device mounted on the gearbox alongside the electric motor and coupled to the PTO output gear. The off-highway vehicle has one or more auxiliary devices driven by the PTO device. The PTO device may drive the auxiliary devices.

Abstract: A high speed gear box including ribs, gears with holes, and oil channels configured to divide and distribute lubricating oil and contacting the lubricating oil with a high speed gear box housing wall. The high speed gear box housing and gear box cover have lubricating oil channel which supply lubricants to bearings. Output gears have holes which circulate oil throughout the high speed gear box. As lubricating oil is continuously circulated at locations which may create friction, the thermal energy, which is generated by high speed rotation of gears, shafts, and bearings is absorbed by cooling oil and transferred to housings, latent heat is dissipated to atmosphere through housing wall. This solves the overheating problem of electric high speed gear box.

Abstract: An electric drive system is herein provided. In one example, an electric drive system comprises an electric motor rotationally coupled to a high-speed reduction gear set (HSRU) and a parking brake assembly also coupled to the HSRU. The HSRU rotationally couples to a differential assembly via a pinion gear assembly including a pinion shaft and a bevel pinion gear pair.

Abstract: The description discloses an electric drive train of an off-highway vehicle. The drive train comprising: a drive axle; a gearbox connected to the drive axle, where the gearbox comprises a gear train, where the gear train comprises an input gear, an intermediate gear, a PTO output gear, and a disconnect clutch configured to selectively couple the intermediate gear to the drive axle; an electric motor, where the electric motor is mounted on the gearbox in a longitudinal direction of a vehicle and coupled to the input gear; and a PTO device mounted on the gearbox alongside the electric motor and coupled to the PTO output gear. The off-highway vehicle has one or more auxiliary devices driven by the PTO device. The PTO device may drive the auxiliary devices.

Abstract: Systems are provided electric drivetrains. An electric driveline may include a planetary gear set comprising a ring gear, a sun gear, a planet carrier coupled to the ring gear and the sun gear, a first motor comprising a first output shaft coupled to the ring gear, a second motor comprising a second output shaft coupled to the sun gear, and a controller with instructions stored in memory thereof that when executed cause the controller to adjust an operational state of the first motor and selectively couple the ring gear to a static housing via a clutch based on a speed of the planet carrier.

Abstract: An electric driveline includes a planetary gear set comprising a ring gear, a sun gear, a planet carrier coupled to the ring gear and the sun gear, a first motor including a first output shaft coupled to the ring gear, a second motor including a second output shaft coupled to the sun gear, and a controller with instructions stored in memory thereof that when executed cause the controller to adjust an operational state of the first motor and selectively couple the ring gear to a static housing via a clutch based on a speed of the planet carrier.

Abstract: Methods and systems for an electric vehicle (EV). The EV system includes an electric drive axle that includes a first electric motor configured to transfer mechanical power to a first drive wheel, a second electric motor configured to transfer mechanical power to a second drive wheel, and a motor coupling clutch configured to selectively rotationally couple the first electric motor to the second electric motor. The EV system further includes a controller configured to selectively rotationally couple the first electric motor to the second electric motor via operation of the motor coupling clutch based on vehicle load.

Abstract: Methods and systems for a drive axle. The drive axle includes a central portion including a differential assembly, the differential assembly including axle shaft side gears with a plurality of fins in contact with lubricant of an axle housing, and an arm portion including axle shafts, the arm portion including an inner inclined surface to guide oil toward the central portion and a plurality of holes distributed axially.

Abstract: Systems are provided for a limited slip differential (LSD). The LSD comprises a two-piece differential case, an intermediate floating piece positioned in an interior of the two-piece differential case and configured to slide axially therein. The LSD, further comprises a first side gear and a second side gear meshed with gears of the intermediate floating piece, a first disc spring mounted on the first side gear and a second disc spring mounted on the second side gear, a first clutch pack mounted on the first side gear and positioned between the first disc spring and a lip of the first side gear, and a second clutch pack mounted on the second side gear and positioned between the second disc spring and a lip of the second side gear, and a shim mounted on the second side gear and positioned axially between the second disc spring and the two-piece differential case.

Abstract: Methods and systems for an electric vehicle (EV). The EV system, in one example, includes a first electric drive axle and a second electric drive axle that each include a pair of electric motors and a motor coupling clutch. The EV system further includes a controller configured to selectively engage one or both of the motor coupling clutches based on vehicle load.

Abstract: Systems are provided for a steering system. In one example, a steering system includes a hydraulic cylinder configured to adjust a steering angle of wheels coupled to an axle, and a pair of hydraulic ports, each including an inboard section in scaling engagement with an outer circumference of a cylinder tube.

Abstract: Methods and systems for an electric vehicle (EV). The EV system, in one example, includes a first electric drive axle and a second electric drive axle that each include a pair of electric motors and a motor coupling clutch. The EV system further includes a controller configured to selectively engage one or both of the motor coupling clutches based on vehicle load.

Abstract: Methods and systems for an electric vehicle (EV). The EV system includes an electric drive axle that includes a first electric motor configured to transfer mechanical power to a first drive wheel, a second electric motor configured to transfer mechanical power to a second drive wheel, and a motor coupling clutch configured to selectively rotationally couple the first electric motor to the second electric motor. The EV system further includes a controller configured to selectively rotationally couple the first electric motor to the second electric motor via operation of the motor coupling clutch based on vehicle load.

Abstract: A method for operating an off-highway vehicle, comprising: receiving a torque request; rotating a first wheel at a first speed via a first side motor based on the torque request, wherein the first side motor is positioned coaxially with respect to the first wheel; and rotating a second wheel at a second speed via a second side motor based on the torque request, wherein the second side motor is positioned coaxially with respect to the second wheel.

Abstract: A method for operating an off-highway vehicle, comprising: receiving a torque request; rotating a first wheel at a first speed via a first side motor based on the torque request, wherein the first side motor is positioned coaxially with respect to the first wheel; and rotating a second wheel at a second speed via a second side motor based on the torque request, wherein the second side motor is positioned coaxially with respect to the second wheel.

Abstract: An electric driveline for an electric vehicle, comprising: a battery unit, a motor unit and a motor control unit which are fixed to a vehicle chassis. A drive axle unit supporting the vehicle chassis. The motor unit placed in a cradle member, and directly coupled to the drive axle unit by means of a coupling member. The electric driveline allowing for a transmission to be eliminated from vehicles, thereby simplifying the production process of the vehicles and reducing manufacturing costs of the vehicles.

Abstract: A high speed gear box including ribs, gears with holes, and oil channels configured to divide and distribute lubricating oil and contacting the lubricating oil with a high speed gear box housing wall. The high speed gear box housing and gear box cover have lubricating oil channel which supply lubricants to bearings. Output gears have holes which circulate oil throughout the high speed gear box. As lubricating oil is continuously circulated at locations which may create friction, the thermal energy, which is generated by high speed rotation of gears, shafts, and bearings is absorbed by cooling oil and transferred to housings, latent heat is dissipated to atmosphere through housing wall. This solves the overheating problem of electric high speed gear box.

Abstract: A method for operating an off-highway vehicle, comprising: receiving a torque request; rotating a first wheel at a first speed via a first side motor based on the torque request, wherein the first side motor is positioned coaxially with respect to the first wheel; and rotating a second wheel at a second speed via a second side motor based on the torque request, wherein the second side motor is positioned coaxially with respect to the second wheel.