When it is determined that predicted required drive power (Tf) which is drive power predicted to be required for a vehicle is greater than a first threshold value (TH1) set within a range of drive power that can be outputted in a second mode, or when actual required drive power (Ta) is greater than the first threshold value (TH1), a control device (10) sets an operating mode to a first mode in which a first engagement device (CL1) is brought into an engaged state and a second engagement device (CL2) is brought into a disengaged state, to control a rotating electrical machine (MG1) and an internal combustion engine (EG) to output the actual required drive power (Ta). In other cases, the control device (10) sets the operating mode to the second mode in which the first engagement device (CLl) is brought into a disengaged state and the second engagement device (CL2) is brought into an engaged state, to control the rotating electrical machine (MGl) to output the actual required drive power (Ta).

A vehicle control device includes a control unit. In a state where a first electric motor generates electricity by rotating an internal combustion engine and a target driving force is decided based on an operation for an accelerator pedal, the control unit performs a first driving control in which driving of a vehicle by a first driving force, which is a driving force of a first driving device including the internal combustion engine and the first electric motor, is prioritized. In a state where the first electric motor generates electricity by rotating the internal combustion engine and the target driving force is decided without being based on the operation for the accelerator pedal, the control unit performs a second driving control in which driving of the vehicle by a second driving force, which is a driving force of a second driving device including a second electric motor, is prioritized.

A hybrid vehicle includes an engine that drives first wheel, and a motor that drives second wheel. The hybrid vehicle includes (1) a minute speed launch support mode where the hybrid vehicle is driven only by the motor as a drive source, (2) a sudden launch support mode where the hybrid vehicle is driven by the engine and motor as the drive source, and (3) a smooth launch support mode where the hybrid vehicle is driven only by the motor as the drive source in an early stage, is driven by the engine and motor in a middle stage, and is driven only by the engine in a late stage, and if an operation amount of an acceleration instruction unit is not 0 or is substantially not 0, any one of the support modes is executed according to an operation status of the acceleration instruction unit.

A device for controlling driving of an electric four-wheel drive vehicle at the time of shift is provided. The device controls driving of an electric four-wheel drive vehicle to minimize energy loss occurring on a power transmission path during shift, thereby improving fuel efficiency.

A transmission unit includes: input shafts; output shafts configured to transmit with a corresponding input shaft via gears; a reverse output gear fitted over one output shaft; a reverse synchronizer; a reverse shaft configured to rotate together with a input shaft and a reverse output gear; a motor power shaft; a first and a second motor gears fitted over the motor power shaft; the second motor gear configured to rotate together with a shift driven gear; and a motor synchronizer. A power transmission system including the transmission unit and a vehicle including the power transmission system are also provided.

A transmission unit includes: input shafts; output shafts configured to transmit with a corresponding input shaft via gears; a reverse output gear fitted over one output shaft; a reverse synchronizer; a reverse shaft configured to rotate together with a input shaft and a reverse output gear; a motor power shaft; a first and a second motor gears fitted over the motor power shaft; the second motor gear configured to rotate together with a shift driven gear; and a motor synchronizer. A power transmission system including the transmission unit and a vehicle including the power transmission system are also provided.

A vehicle includes an all-wheel-drive powertrain having an electric machine configured to power wheels. A controller is programmed to output a first calculated vehicle speed derived from integrating a measured longitudinal acceleration of the vehicle and output a second calculated vehicle speed based on the measured longitudinal acceleration and a speed of one of the wheels. The controller is further programmed to, responsive to a flag being present, command a speed to the electric machine that is based on the first vehicle speed to reduce wheel slip, and responsive to a flag not being present, command a speed to the electric machine that is based on the second vehicle speed to reduce wheel slip.

An electrically-driven vehicle includes a high-capacity battery unit and a high-output battery unit, both of which supply electric power to rotating electric machines, and a charging inlet serving as a charging port of an external power supply. The high-capacity battery unit receives more charge power from the charging inlet than the high-output battery unit and is positioned nearer to the charging inlet than the high-output battery unit is to the charging inlet. In this way, an electric power loss increase caused by a wiring resistance during an external charge can be suppressed in a plug-in type electrically-driven vehicle, which is chargeable by an external power supply.

A method for operating a hybrid drive device of a motor vehicle is disclosed, wherein the hybrid drive device includes an internal combustion engine, which can be operatively connected to a first axle of the motor vehicle, a first electric motor, which can also be operatively connected to the first axle of the motor vehicle, and a second electric motor, which can be operatively connected to a second axle of the motor vehicle. The electrical energy used for operating the second electric motor is generated in a first mode of operation by the first electric motor driven by the internal combustion engine while increasing the output of the internal combustion engine, and in a second mode of operation is derived exclusively from an energy storage device for electrical energy.

A method for operating a hybrid drive device of a motor vehicle is disclosed, wherein the hybrid drive device includes an internal combustion engine, which can be operatively connected to a first axle of the motor vehicle, a first electric motor, which can also be operatively connected to the first axle of the motor vehicle, and a second electric motor, which can be operatively connected to a second axle of the motor vehicle. The electrical energy used for operating the second electric motor is generated in a first mode of operation by the first electric motor driven by the internal combustion engine while increasing the output of the internal combustion engine, and in a second mode of operation is derived exclusively from an energy storage device for electrical energy.