Hyundai Motor Company

Kia Motors Corporation

Yonsei University

KwangMin Choi

Jun Hoi Huh

Tae Sic Park

Seongeun Park

Baekyu Kim

Chulmin Ahn

Seok Joon Kim

SungGon Byun

Ok Ju Cho

Hyun Jae Cho

Junhoi Huh

Taesic Park

Buhm Joo Suh

Keunseok Lee

Jae Hyeon Lee

Seokjoon Kim

SeongGon Byun

Jonggyu Jeon

DongHyun Bae

Kumlim Choi

Sangjun Lee

An aluminum alloy material according to an embodiment of the present invention is an aluminum alloy including a grain boundary and a plurality of grains divided by the grain boundary, and having a face-centered cubic crystal structure, and includes a band formed by employing one or more non-metallic elements selected from oxygen (O), carbon (C) and nitrogen (N) in an aluminum matrix. Each of the grains includes a plurality of sub-grains divided by a low-angle grain boundary (LAGB), and a band positioned at the low-angle grain boundary may form a coherent interface with an aluminum matrix. Since a plurality of dislocations already are present in the band, a dislocation cell size is reduced during plastic deformation, which greatly contributes to an improvement in elongation. Such an aluminum alloy material can be subjected to cold rolling at a high reduction rate, and as a result, a plate having significantly improved elongation can be obtained.

Aluminium alloy material and method of manufacturing the same

A power transmission apparatus of a hybrid electric vehicle, may include an engine and first and second motor/generator, the power transmission apparatus includes a planetary gear set including first, second, and third rotation elements, a first shaft fixedly connected to the first rotation element and a rotor of the first motor/generator, a second shaft fixedly connected to the second rotation element and the engine, a third shaft fixedly connected to the third rotation element, a fourth shaft externally meshed with the second shaft and the third shaft, a fifth shaft fixedly connected to a rotor of the second motor/generator, a sixth shaft externally meshed with the fourth shaft and the fifth shaft and transmitting rotational power of the engine and the first and second motor/generators to a final reduction gear of a differential gear and three gear trains externally engaged with the first to sixth shafts.

Power transmission apparatus of hybrid electric vehicle

A torque vectoring system may include a first planetary gear set that may include first, second, and third rotation elements, wherein the first rotation element is selectively connectable to one of the left-side output shaft and the right-side output shaft through a coupling element, the second rotation element is selectively connectable to the one output shaft through a coupling element, and the third rotation element is fixedly connected to a housing; and a second planetary gear set that may include fourth, fifth, and sixth rotation elements, and the fourth rotation element is fixedly connected to the first rotation element, the fifth rotation element is connected to the differential such that power may be transmitted thereto, and the sixth rotation element is fixedly connected to the second rotation element.

System for torque vectoring

A torque vectoring apparatus may include a first planetary gear set including first to third rotation elements, wherein the first rotation element is gear-connected to receive power from the speed reduction device, the second rotation element is connected to be configured for transmitting power to the differential, and the third rotation element is selectively connectable to a housing through a coupling element; a second planetary gear set including fourth, fifth, and sixth rotation elements, wherein the fifth rotation element is fixedly connected to the third rotation element; and a third planetary gear set including seventh, eighth, and ninth rotation elements, wherein the seventh rotation element is fixedly connected to the fourth rotation element, the eighth rotation element is fixedly connected to one of the left and right output shafts while being fixedly connected to the sixth rotation element, and the ninth rotation element is fixedly connected to the housing.

Device for torque vectoring

A power transmission system of a hybrid electric vehicle uses an engine and a motor/generator as power sources, and includes: a torque converter including a planetary gear set having first, second, and third rotating elements, the first rotating element being selectively connected to a transmission housing, the second rotating element being connected to an engine output shaft of the engine, and the third rotating element being connected to a motor output shaft of the motor/generator; an input device including a first input shaft selectively connected to the motor output shaft through one clutch and a second input shaft that is disposed on a same shaft line as the first input shaft to be selectively connected to the motor output shaft through another clutch; and a shift output device shifting and outputting rotation power of the input device.

Power transmission system of hybrid electric vehicle

A transmission for a vehicle may include first and second input shafts, first and second shifting output units, a reverse speed idle unit and an electric driving force unit. Each input shaft may include a plurality of input gears having different numbers of gear teeth. The second input shaft may be hollow and disposed at a front side of the first input shaft without any rotational interference with the first input shaft. Each shifting output unit may include an output shaft, shift rotational driving force transferred through shifting gears selectively outer-engaging with corresponding input gears by a synchronizing unit and output the shifted rotational driving force through an output gear. The reverse speed idle unit may regulate reverse speed shifting. The electric driving force unit may selectively transfer rotational driving force of a motor/generator to the first input shaft or the second shifting output unit.

Power transmission apparatus for hybrid electric vehicle

A control apparatus of a power transmission system is provided and includes an input shaft through which torque from an engine is input and first and second motor/generators. A planetary gear set is disposed on a line from the input shaft and an output shaft transmits torque from the planetary gear set and the second motor/generator to driving wheels. A battery supplies electricity to the first and second motor/generators and charges electricity generated therefrom. An HEV mode 1 in which an operation of a first brake and a second brake is released or an HEV mode 2 in which an operation of the second brake is operated is converted based on a mechanical maximum efficiency range, a required power of the engine, a speed ratio of a transmission, and an SOC of the battery.

Control apparatus and method of power transmission system for hybrid elecric vehicle

A transmission system of a hybrid electric vehicle may include two shafts, two hollow shafts and two motor/generators. A first shaft connected to an engine. A first hollow shaft disposed without rotational interference with the first shaft, selectively connected to the first shaft, and provided with a first output gear. A second hollow shaft disposed without rotational interference with the first hollow shaft and provided with a second output gear. A second shaft disposed in parallel with the first shaft and operably connected to the first shaft and the first hollow shaft through a gear unit to selectively transmit torque of the first shaft to the first hollow shaft. Clutches may connect the first shaft and the second shaft selectively to the first hollow shaft. A first motor/generator operably connected to the second hollow shaft and a second motor/generator operably connected to the second shaft.

Transmission system of hybrid electric vehicle

A transmission system of a hybrid electric vehicle may include first and second motor/generators, a planetary gear set, first and second output gears, a brake, a rotation restricting member on an axis of an input shaft receiving torque of an engine in a transmission housing and a hollow shaft disposed at a radial exterior of the input shaft and adapted to transmit the torque of the engine or torque of the first motor/generator to the second output gear, an outer shaft disposed at a radial exterior of the hollow shaft and adapted to transmit torque of the second motor/generator to the first output gear, and a rear cover coupled to a rear end portion of the transmission housing.

A power transmission system for a hybrid vehicle according to an exemplary embodiment of includes an input shaft through which torque from an engine, which is a power source, is inputted, first and second motor/generators that have the functions of both of a motor and a generator, as individual power sources, a planetary gear set that may be disposed on a line from the input shaft and includes a first rotating element directly connected with the first motor/generator and selectively connected to a transmission housing, a second rotating element directly connected with the input shaft and selectively connected to the transmission housing, and a third rotating element operating as an output element and connected with the second motor/generator, an output shaft that transmits torque from the planetary gear set and the second motor/generator to driving wheels through a differential, and a friction member disposed on the selective connecting portion.

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Seoul, South Korea

KwangMin Choi