A drive force control system for a vehicle configured to change a torque to propel a vehicle certainly in a required amount by controlling output torques of an engine and a motor. A controller is configured to: calculate a required amount of change in synthesized torque of an engine torque and a motor torque; calculate a required amount of change in the engine torque and a required amount of change in the motor torque based on the required amount of change in the synthesized torque; select one of the engine and the motor whose torque will be changed further than a limit value; and adjust the torque of the selected prime mover by a counter torque.

A hybrid driving apparatus is provided which enables a driver to sufficiently enjoy a driving feeling of a vehicle driven by an internal combustion engine. A hybrid driving apparatus includes an internal combustion engine that drive main driving wheels, a motive power transmission mechanism transmitting a driving force to the main driving wheels, a main driving electric motor driving the main driving wheels, an accumulator, sub-driving electric motors transmitting motive power to sub-driving wheels of the vehicle, and a control apparatus executing an electric motor traveling mode and an internal combustion engine traveling mode. The control apparatus causes the internal combustion engine to generate the driving force, the internal combustion engine is a flywheel-less engine, and the control apparatus causes the main driving electric motor to generate a torque for maintaining idling of the internal combustion engine in the internal combustion engine traveling mode.

A hybrid vehicle may include an engine, a drive wheel, a CVT for driving the drive wheel by continuously changing an engine power, an electric motor for driving the drive wheel, and a transaxle mechanically linked to the drive wheel. The transaxle may include an input shaft having first and second ends axially opposite each other and a clutch interposed between the motor and the input shaft. The first end of the input shaft is structured to receive power from the CVT and the second end of the input shaft is structured to receive power from the electric motor, The clutch, the second end of the input shaft and a motor shaft serving as a rotary axis of the motor are coaxially disposed.

A work machine comprises a work unit that performs work on a travel path, an internal combustion engine configured to generate power for driving the work unit, a traveling unit including a front wheel and a rear wheel, an electric motor configured to generate power for driving a first wheel of the front wheel and the rear wheel, and a first clutch for switching between transmission and discontinuation of the power from the internal combustion engine to a second wheel of the front wheel and the rear wheel.

A hybrid power drive system is provided, including a power battery device, a range extender system, and a motor drive system. The power battery device is configured to supply power to the motor drive system. The range extender system includes an engine and a generator. The generator is able to generate power under the driving of the engine to supply the power to the motor drive system and/or charge the power battery device. The hybrid power drive system further includes a vehicle control unit configured to control the engine and/or generator of the range extender system to generate a driving force. The range extender system is mechanically connected to a main coupling mechanism to transmit the generated driving force to a main drive axle of a vehicle by means of the main coupling mechanism to drive wheels on both sides of the axle to rotate. Also provided is a vehicle having the hybrid power drive system. According to the hybrid power drive system and the vehicle having same, the vehicle control unit is utilized to control the engine and/or generator of the range extender system to generate the driving force for different application operating conditions, and thus the economy of the vehicle can be effectively improved.

Torque distribution control systems and methods for through-the-road electrified vehicles having distinct first and second torque generating systems for distinct first and second axles, respectively, utilize existing vehicle sensors to (i) obtain measured wheel rotational speeds and a measured steering wheel angle, (ii) estimate virtual yaw rates of the first and second axles using these measured values and other known vehicle parameters, (ii) predict whether oversteer or understeer of the vehicle is likely to occur based on the estimated first and second axle virtual yaw rates, and (iv) when oversteer or understeer of the vehicle is predicted to occur, adjust a torque distribution between the first and second torque generating systems to prevent the oversteer or understeer from occurring and to keep the vehicle on a constant turn path.

Methods and systems are provided for operating a driveline of a four wheel drive vehicle that includes a high gear ratio and a low gear ratio. The driveline may be operated to shift between the high gear ratio and the low gear ratio while the four wheel drive vehicle is moving. In one example, a clutch is opened during shifting from the high gear ratio to the low gear ratio, which allows the vehicle to continue traveling during the gear ratio change.

A transmission device for a motor vehicle includes a first connecting shaft operatively connectable to a first subaxle of a wheel axle of the motor vehicle; a second connecting shaft operatively connectable to a second subaxle of the wheel axle; a coupling transmission having a drive shaft operatively connectable with a drive aggregate of the motor vehicle, and an output shaft operatively connectable with the first wheel axle, wherein via the coupling transmission the drive shaft is operatively connected with the output shaft and with the first and the second connecting shaft for torque distribution; and a superposition transmission, wherein the output shaft is operatively connectable with at least one of the first connecting shaft and the second connecting shaft via the superposition transmission by shifting the superposition transmission.

A transaxle may include a motor, an input shaft, first and second output shafts, and first and second clutches. The input shaft has first and second ends. The first end of the input shaft is structured to receive an engine power from an engine. The second end of the input shaft is structured to receive motor power from the motor. The first output shaft is driven by power outputted from the input shaft. The second output shaft is driven by the motor power. The second output shaft is extended coaxially to the input shaft. The first clutch is interposed between the motor and the input shaft. The second clutch is interposed between the motor and the second output shaft. The first clutch and the second clutch are coaxially disposed between the second end of the input shaft and an axial end of the second output shaft.

Methods and systems are provided for a motorized disconnect operable to selectively engage and disengage two rotating components of a vehicle drivetrain. As one example, a motorized disconnect system is provided that operates via an electric motor and includes a shifter assembly with an oscillating gear track and cam profile for rotating the shifter assembly while moving it in an axial direction to selectively couple two rotating components.