A powertrain comprising a transmission (2), a first electric motor (4a) and a second electric motor (4b), the transmission having an input shaft (1) to which a source of mechanical power may be connected, an output shaft (6) and a gear assembly providing at least two different gear ratios that may be selected for transfer of mechanical power from the input shaft (1) to the output shaft (6), the first electric motor (4a) is connected to the input shaft (1), such that torque and rotation may be transferred between the first electric motor and the input shaft, and the second electric motor (4b) is connected to the input shaft (1) via a first clutch (5a), such that torque and rotation may be transferred between the second electric motor (4b) and the input shaft (1), and connected to the output shaft (6) via a second clutch (5b), such that torque and rotation may be transferred between the second electric motor (4b) and the output shaft (6), wherein the first electric motor (4a) is connected to the second electric motor (4b) via the first clutch (5a).

A driving device includes: an internal combustion engine; a first rotating electric machine; a second rotating electric machine; and a transmission. The transmission includes: a first rotating electric machine shaft; a second rotating electric machine shaft which is arranged in parallel to the first rotating electric machine shaft; a first gear provided in the first rotating electric machine shaft; and a second gear provided in the second rotating electric machine shaft. A width in an axial direction of the first rotating electric machine is larger than that of the second rotating electric machine. The number of gears provided in a shaft in which a gear for the first rotating electric machine that meshes with the first gear is arranged is smaller than the number of gears provided in a shaft in which a gear for the second rotating electric machine that meshes with the second gear is arranged.

A vehicle drive apparatus includes an internal combustion engine, an electric-power-generating-motor gear train, a drive gear, a driven gear, a differential, a low clutch and a high clutch. The electric-power-generating-motor gear train and the driven gear are arranged on a first plane. The drive gear, the driven gear, and the differential are arranged on a second plane. The low clutch and the high clutch are arranged on a third plane.

A vehicle drive apparatus includes an internal combustion engine, an electric-power-generating-motor gear train, a drive gear, a driven gear, a differential, a low clutch and a high clutch. The electric-power-generating-motor gear train and the driven gear are arranged on a first plane. The drive gear, the driven gear, and the differential are arranged on a second plane. The low clutch and the high clutch are arranged on a third plane.

An embodiment hybrid powertrain for a vehicle includes a first input shaft configured to be interlocked with an engine, a second input shaft configured to be interlocked with a first motor and to be parallel to the first input shaft, a third input shaft configured to be interlocked with a second motor and to be parallel to the second input shaft, an output shaft mounted parallel to the third input shaft, a first selective mesh device configured to transmit power from the second input shaft to the output shaft at multiple different gear ratios, a second selective mesh device configured to transmit the power from the third input shaft to the output shaft at the multiple different gear ratios, and a third selective mesh device configured to transmit the power from the first input shaft to the second input shaft or the third input shaft.

An embodiment hybrid powertrain for a vehicle includes a first input shaft configured to be interlocked with an engine, a second input shaft configured to be interlocked with a first motor and to be parallel to the first input shaft, a third input shaft configured to be interlocked with a second motor and to be parallel to the second input shaft, an output shaft mounted parallel to the third input shaft, a first selective mesh device configured to transmit power from the second input shaft to the output shaft at multiple different gear ratios, a second selective mesh device configured to transmit the power from the third input shaft to the output shaft at the multiple different gear ratios, and a third selective mesh device configured to transmit the power from the first input shaft to the second input shaft or the third input shaft.

To provide a drive system for a hybrid vehicle capable of suppressing energy loss by slip control at a start of an internal combustion engine during electric vehicle (EV) travel, a power transmission system for the hybrid vehicle is configured to couple an internal combustion engine, an electric motor, and a transmission by planetary gear mechanisms, has a brake that engages and disengages the internal combustion engine with and from a case, engages the brake during EV travel in which only the electric motor is used as a drive source, and is configured to start the internal combustion engine by disengaging the brake at the time of switching from the EV travel to hybrid vehicle (HEV) travel in which the internal combustion engine and the electric motor are used as drive sources.

An electrical portal wheel hub system is coupled with a wheel and has an electric motor/generator, such as an axial flux motor configured therein and configured to provide power or torque to drive the wheel. The electric motor may be offset vertically from the rotational axis of the wheel to provide additional ground clearance. The electric motor may drive an input gear that is coupled with an output gear that in turns drives the wheel mount and wheel. The gearing ratio can be selected based on the application. A drive axle may from the vehicle may couple with the electric motor and the electric motor may be used to provide supplemental power to drive the wheels. The hub casing may provide mounts for the upper and lower A-arms as well as for a steering arm. The electric motor may act as a generator to charge a battery.

An electrical portal wheel hub system is coupled with a wheel and has an electric motor/generator, such as an axial flux motor configured therein and configured to provide power or torque to drive the wheel. The electric motor may be offset vertically from the rotational axis of the wheel to provide additional ground clearance. The electric motor may drive an input gear that is coupled with an output gear that in turns drives the wheel mount and wheel. The gearing ratio can be selected based on the application. A drive axle may from the vehicle may couple with the electric motor and the electric motor may be used to provide supplemental power to drive the wheels. The hub casing may provide mounts for the upper and lower A-arms as well as for a steering arm. The electric motor may act as a generator to charge a battery.

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.