Abstract: An auxiliary driving apparatus of a 4WD hybrid electric vehicle is a series-type driving apparatus to which a longitudinal engine is applied, and a driving mechanism including an engine, a motor, and a plurality of clutches is applied to the front wheel side of a hybrid electric vehicle with a motor applied to the rear wheel side as a main driving source, so that the series mode can be implemented in the rear wheel 2WD mode, and the 4WD (AWD) EV mode can be driven when the engine is stopped.

Abstract: An auxiliary driving apparatus of a four-wheel drive (4WD) hybrid electric vehicle is provided. The auxiliary driving apparatus is a series-type driving apparatus to which a longitudinal engine is applied, and a driving mechanism including an engine, a motor, and a plurality of clutches is applied to the front wheel side of a hybrid electric vehicle with a motor applied to the rear wheel side as a main driving source, so that the series mode can be implemented in the rear wheel 2WD mode, and the 4WD (AWD) EV mode can be driven when the engine is stopped.

Abstract: A cooling apparatus for a power module is provided. The cooling apparatus includes a first surface contact cooler contacting one surface of the power module and including a first heat sink, in which a first air flow path is formed and a second surface contact cooler contacting the other surface of the power module and including a second heat sink, in which a second air flow path is formed, wherein the first air path and the second air path mutually form a continuous air movement path.

Abstract: An auxiliary driving apparatus for a 4WD hybrid electric vehicle includes a disconnector between an auxiliary differential and a front wheel and configured to selectively transmit or block a motor torque to front wheels of the hybrid electric vehicle. The hybrid electric vehicle includes a first motor configured to be applied to a rear wheel side as a main driving source, and an engine and an auxiliary motor configured to be applied as an auxiliary driving source. A rotation speed of the motor torque output from the auxiliary motor is reduced by an auxiliary reducer and transmitted to front wheels through an auxiliary differential. A clutch provided on an engine output shaft is configured to selectively transmit or block an engine torque of the engine to the auxiliary motor through the auxiliary reducer. The auxiliary reducer is configured to increase a rotation speed of the engine torque of the engine.

Abstract: A motor cooling structure for a vehicle includes: an inflow duct configured to guide traveling wind of the vehicle to a motor, and a first air room and a second air room formed to direct air supplied from the inflow duct to flow around coils on both sides of a stator core, respectively. The motor cooling structure further includes a discharge duct configured to discharge air passing through the first air room and the second air room to the outside.

Abstract: A motor for a vehicle, such as an electric vehicle, includes a stator having a plurality of coils wound thereon, and a heat spreader positioned on a cross-section of the stator. The stator coils of the stator are configured to effectively cool an internal part of the stator without a complicated structure or manufacturing difficulties.

Abstract: An embodiment stator includes a stator core including a plurality of teeth and a plurality of slots alternately arranged in a circumferential direction at an inner portion of the stator core, a stator coil wound around the teeth, and a plurality of cooling passages disposed in the stator core and arranged in the circumferential direction of the stator core, wherein each of the cooling passages is configured to allow a cooling fluid to flow therethrough, and wherein each of the cooling passages includes a plurality of radial passage portions disposed at the inner portion of the stator core, extending in a radial direction of the stator core, and arranged in an axial direction of the stator core, and a plurality of axial passage portions disposed at an outer portion of the stator core, connected to the radial passage portions, and extending in the axial direction of the stator core.

Abstract: A device for cooling a motor can improve motor cooling performance with multiple cooling channels formed in a stator core of the motor, allowing a coolant to flow in both directions therethrough. The device is capable of maximizing motor cooling performance in such a manner that two or more multiple cooling channels are formed in a stator core with a separate coolant inlet and outlet. The coolant moves in a straight line in different directions along each cooling channel to cool the stator core, and thus the temperature gradient of the coolant is minimized to cool the entire area of the motor evenly.

Abstract: An embodiment motor cooling apparatus includes a stator core including a plurality of metal plates made in a predetermined shape by lamination, an inlet channel formed from one side of the stator core and extending therethrough to a predetermined depth therein, a plurality of cooling channels branched from an internal end of the inlet channel and extending therefrom to either an upper side or a lower side of the stator core, and a cooling fluid supply apparatus configured to circulate cooling fluid from the inlet channel to the plurality of cooling channels.

Abstract: A lubrication structure of a planetary gear set includes a hollow shaft on which the planetary gear set is disposed and forming an oil passage in an axial direction thereof and a plurality of oil holes in a radial direction thereof to supply a lubrication oil to the planetary gear set, and an internal pipe provided within the oil passage of the hollow shaft, wherein a gap chamber is formed between the internal pipe and the hollow shaft with a preset gap, where a plurality of oil supply holes are formed through the internal pipe in the radial direction to fluidically communicate the gap chamber and an internal space of the internal pipe.

Abstract: A device for cooling a motor can improve motor cooling performance with multiple cooling channels formed in a stator core of the motor, allowing a coolant to flow in both directions therethrough. The device is capable of maximizing motor cooling performance in such a manner that two or more multiple cooling channels are formed in a stator core with a separate coolant inlet and outlet. The coolant moves in a straight line in different directions along each cooling channel to cool the stator core, and thus the temperature gradient of the coolant is minimized to cool the entire area of the motor evenly.

Abstract: An exemplary lubrication structure of a torque vectoring apparatus includes an axle housing including left-side and right-side housings disposed on left and right sides of a differential device, a left-side cover provided on an external side of the left-side housing, and a right-side cover provided on an external side of the right-side housing, where, a first space is formed between the left-side and right-side housings and provided with the differential therein, a second space is formed between the left-side housing and the left-side cover and provided with a first planetary gear set, a third space is formed between the right-side housing and the right-side cover and provided with second and third planetary gear sets, and the first, second, and third spaces are fluidically partitioned by a plurality of oil seals, and respectively filled with a lubrication oil therein.

Abstract: A lubrication structure of a planetary gear set includes a hollow shaft on which the planetary gear set is disposed and forming an oil passage in an axial direction thereof and a plurality of oil holes in a radial direction thereof to supply a lubrication oil to the planetary gear set, and an internal pipe provided within the oil passage of the hollow shaft, wherein a gap chamber is formed between the internal pipe and the hollow shaft with a preset gap, where a plurality of oil supply holes are formed through the internal pipe in the radial direction to fluidically communicate the gap chamber and an internal space of the internal pipe.

Abstract: An embodiment motor cooling apparatus includes a stator core including a plurality of metal plates made in a predetermined shape by lamination, an inlet channel formed from one side of the stator core and extending therethrough to a predetermined depth therein, a plurality of cooling channels branched from an internal end of the inlet channel and extending therefrom to either an upper side or a lower side of the stator core, and a cooling fluid supply apparatus configured to circulate cooling fluid from the inlet channel to the plurality of cooling channels.

Abstract: A torque vectoring apparatus receiving a vehicle driving torque from a motor-generator may include a speed reduction device configured of reducing a rotation speed of a torque received from the motor-generator, a differential device differentially outputting the speed-reduced torque to two output shafts, a torque vectoring control motor outputting a control torque, a torque vectoring apparatus engaged to the torque vectoring control motor and including two planetary gear sets to control a torque ratio output to the two output shafts by the control torque, and a torque multiplication device including a first planetary gear set having first to third rotation elements and being mounted on one of the two output shafts, the second rotation element being connected to the torque vectoring control motor, the third rotation element being fixedly connected to a transmission housing.

Abstract: A torque vectoring apparatus receiving a vehicle driving torque from a motor-generator may include a speed reduction device configured to reduce a rotation speed of a torque received from the motor-generator, a differential device differentially outputting the speed-reduced torque to two output shafts, a vectoring control motor outputting a control torque, a torque vectoring apparatus engaged to the vectoring control motor and including two planetary gear sets to control a torque ratio output to the two output shafts by the control torque, and a torque multiplication device including a first planetary gear set having first to third rotation elements and being mounted on one of the two output shafts, the second rotation element being connected to the control motor, the third rotation element being fixedly connected to a transmission housing.

Abstract: A torque vectoring apparatus receiving a vehicle driving torque from a motor-generator may include a speed reduction device engaged to the motor-generator and configured to reduce a rotation speed received from the motor-generator, a differential device engaged to the speed reduction device and configured to receive the speed-reduced torque from the speed reduction device and to differentially output torques to left and right output shafts, a vectoring control motor outputting a control torque, and a torque vectoring apparatus engaged to the vectoring control motor and including two planetary gear sets and controlling a torque ratio output to the left and right output shafts by the control torque of the torque vectoring control motor, wherein the differential device includes a differential case receiving a torque from the speed reduction device, the differential case is mounted between the two planetary gear sets rotatably on a connecting member connecting the two planetary gear sets, and side gears in the di

Abstract: A torque vectoring apparatus receiving a vehicle driving torque from a motor-generator may include a speed reduction device engaged to the motor-generator and configured to reduce a rotation speed received from the motor-generator, a differential device engaged to the speed reduction device and configured to receive the speed-reduced torque from the speed reduction device and to differentially output torques to left and right output shafts, a vectoring control motor outputting a control torque, and a torque vectoring apparatus engaged to the vectoring control motor and including two planetary gear sets and controlling a torque ratio output to the left and right output shafts by the control torque of the torque vectoring control motor, wherein the differential device includes a differential case receiving a torque from the speed reduction device, the differential case is mounted between the two planetary gear sets rotatably on a connecting member connecting the two planetary gear sets, and side gears in the di

Abstract: According to an exemplary clutch apparatus of a hybrid electric vehicle, a clutch connection member directly transmits the torque of the motor to the input shaft, and a radially internal portion of a clutch connection member is spline-engaged with the input shaft while being supported by a step wall.