A differential drive system includes an electric motor for generating an electric motor torque and an input planetary gear-set operatively connected to the electric motor to receive the electric motor torque. The input planetary gear-set has first, second, and third members. The first member receives the electric motor torque, the second member provides a first input torque in a first rotational direction in response to the electric motor torque, and the third member provides a second input torque in a second rotational direction, opposite the first direction, in response to the electric motor torque. The system also includes a first output gear-set operatively connected to the input planetary gear-set, and providing a first output torque in response to the first input torque. The system additionally includes a second output gear-set operatively connected to the input planetary gear-set and providing a second output torque in response to the second input torque.

A centralized full-time electric four-wheel drive system, including: a housing; a central differential; a main drive unit, whose power output gear meshes with the ring gear of the central differential; a dual-rotor motor having a first and a second output gear at either end; a rear-axle differential; a first planetary gearset (PG), whose sun gear and ring gear connect to the carrier of the central differential and the housing respectively; a second PG with common carrier of the first PG, whose sun gear connects to the sun gear of the central differential and ring gear meshes with the first output gear; a third PG, whose sun gear and ring gear connect to the semi-axle of the rear-axle differential and the housing respectively; a forth PG with common carrier of the third PG, whose sun gear connects to the rear-axle differential cage and ring gear meshes with the second output gear.

A differential drive system includes an electric motor for generating an electric motor torque and an input planetary gear-set operatively connected to the electric motor to receive the electric motor torque. The input planetary gear-set has first, second, and third members. The first member receives the electric motor torque, the second member provides a first input torque in a first rotational direction in response to the electric motor torque, and the third member provides a second input torque in a second rotational direction, opposite the first direction, in response to the electric motor torque. The system also includes a first output gear-set operatively connected to the input planetary gear-set, and providing a first output torque in response to the first input torque. The system additionally includes a second output gear-set operatively connected to the input planetary gear-set and providing a second output torque in response to the second input torque.

An electric differential with a torque vectoring function. The electric differential includes: a main drive mechanism; a bevel gear differential; a TV control drive mechanism used for outputting control power; a first single-row planetary gear train, of which a first sun gear is coaxially and fixedly connected with a first half shaft and a first planet carrier is connected with a control output end; a second single-row planetary gear train, of which a second planet carrier is fixed to a drive axle housing, a second gear ring is fixedly connected with a first gear ring and a second sun gear is supported on the first half shaft through a bearing.

A centralized full-time electric four-wheel drive system, including: a housing; a central differential; a main drive unit, whose power output gear meshes with the ring gear of the central differential; a dual-rotor motor having a first and a second output gear at either end; a rear-axle differential; a first planetary gearset (PG), whose sun gear and ring gear connect to the carrier of the central differential and the housing respectively; a second PG with common carrier of the first PG, whose sun gear connects to the sun gear of the central differential and ring gear meshes with the first output gear; a third PG, whose sun gear and ring gear connect to the semi-axle of the rear-axle differential and the housing respectively; a forth PG with common carrier of the third PG, whose sun gear connects to the rear-axle differential cage and ring gear meshes with the second output gear.

The driving apparatus comprising a first motor, a first gear mechanism having a first input shaft and a first output shaft connected to the first motor, a second motor, and a second gear mechanism having a second input shaft and a second output shaft connected to the second motor. The first gear mechanism is configured such that the first input shaft and the first output shaft are in an intersecting or twisted position, and the second gear mechanism is configured such that the second input shaft and the second output shaft are in an intersecting or twisted position.

A two-speed transfer case configured for use in heavy-duty four-wheel drive vehicles and which is equipped with a low-torque power transfer arrangement and a high-torque power transfer arrangement.

The present invention discloses an electric differential with a torque vectoring function. The electric differential includes: a main drive mechanism; a bevel gear differential; a TV control drive mechanism used for outputting control power; a first single-row planetary gear train, of which a first sun gear is coaxially and fixedly connected with a first half shaft and a first planet carrier is connected with a control output end; a second single-row planetary gear train, of which a second planet carrier is fixed to a drive axle housing, a second gear ring is fixedly connected with a first gear ring and a second sun gear is supported on the first half shaft through a bearing.

The present disclosure relates to a gearing arrangement for a tandem axle assembly for a vehicle that reduces parasitic losses associated with the bearings of a drive pinion. The gearing arrangement includes a first helical gear in driving engagement with an input shaft and a portion of an interaxle differential; a second helical gear coupled to a pinion shaft with at least two bearings mounted on either side of the second helical gear on the pinion shaft; and a drive pinion coupled to the pinion shaft and meshingly engaged with a ring gear. The ring gear is in driving engagement with a forward differential assembly. The first helical gear and second helical gear are meshingly engaged and have a predetermined gear ratio.