Hyundai Motor Company

Kia Motors Corporation

Kia Corporation

Soonki Eo

Seong Wook Hwang

Chon Ok Kim

Yong Uk Shin

Sun Sung Kwon

Minho Chae

Ilhan Yoo

Dongwoo Kim

Seongwook Ji

Wonmin Cho

Ki Tae Kim

Kijong Park

Yong Sug Choi

Juhyeon Park

Hyun Sik Kwon

Ma Ru Kang

Jong Hyo Park

Ki Dong Kim

Cheol Ho Jang

Hye Jin Lim

Woo Jin Chang

Woochurl Son

Jin Yong Kim

Ki Been Lim

Yong Hyun Choi

Young Chan Gweon

Sangwon Seo

Ki DOng Kim

Dong Hwan Hwang

Kwang Hyun Won

Sangki Kwak

Seong Kyeong Cheon

A hybrid power transmission apparatus for a vehicle which changes and outputs torque of an engine and a first motor, includes an input shaft selectively input engine torque through an engine clutch, an output externally engages with a differential final reduction gear through an output gear to output shifted torque, a fixed shifting section including a plurality of external gear sets implementing an engine mode having multiple fixed shifting stages, and a mode shifting section including a planetary gear set having a first rotation element fixedly connected to the input shaft and a third rotation element that is externally gear-engaged with a first motor gear of the first motor via a first gear, and one external gear set configured for power connection between a second rotation element of the planetary gear set and the output shaft.

Power transmission apparatus for hybrid electric vehicle

A gear shifting apparatus for a multi-speed transmission includes: a shifting unit controlling gear shifting by a torque of an actuator; and a parking unit controlling a parking state by the torque of the actuator. In particular, the actuator includes a control motor transmitting a driving torque to driven gears of the shifting and parking units through a drive gear, and the shifting unit includes: a fork slider slidably mounted on a fork rail; a shift fork integrally formed with the fork slider; a finger drum connected to a first driven gear engaged with the drive gear, and having a finger end; and a shift lug that rotates about a lug shaft and includes two lug ends having a different length from each other. The shift lug interacts with the finger end, and has a coupler end coupled with a pocket portion formed at the fork slider.

Gear shifting apparatus for multi-speed transmission for electric vehicles

A power transmission apparatus for a hybrid electric vehicle may employ two clutches, two brakes, a dog clutch unit to a planetary gear train of having three planetary gear sets, and thereby provide various shifting modes such as an engine mode and a parallel hybrid mode of multiple shift-stages, an electronically-controlled continuously variable shifting mode, and an electric vehicle mode.

A power transmission apparatus for a hybrid electric vehicle may include first and second input shafts coaxially mounted and selectively receiving an engine torque, a compound planetary gear set mounted on the second input shaft, receiving a motor torque, and formed by combining two planetary gear sets sharing a sun gear and a planet carrier, an idle shaft mounted in parallel with the first input shaft, a first output shaft mounted in parallel to the first input shaft, receiving a torque from at least the first input shaft, and outputting a torque through the first output gear, a connection element selectively transmitting the engine torque to the compound planetary gear set or the first input shaft, an engagement element selectively connecting the compound planetary gear set to a transmission housing, and a plurality of gear sets mounted on the first and second input shafts and idle shaft and the first output shaft.

Power transmission apparatus of hybrid electric vehicle

A power transmission apparatus of a hybrid electric vehicle includes a first input shaft mounted along an axis of an engine shaft and selectively connectable to the engine shaft, a second input shaft formed as a hollow shaft, coaxially mounted with the first input shaft, and fixedly connected to a rotor of the first motor-generator, a third input shaft formed as a hollow shaft, coaxially mounted with the first input shaft, and selectively connectable to the first input shaft, an intermediate shaft mounted in parallel with the first input shaft, an output shaft mounted in parallel to the first input shaft and outputting a shifted toque, a planetary gear set mounted on the output shaft, having an element fixed to the output shaft and forming a shifted torque, and a plurality of gear sets mounted over the first, second, and third input shafts, the intermediate shaft, and the output shaft.

Power transmission system of hybrid electric vehicle

A gear shifting apparatus for a multi-speed transmission for an electric vehicle includes a shifting unit controlling gear shifting by a torque of an actuator, and a parking unit controlling a parking state by the torque of the actuator. In particular, the actuator includes a control motor transmitting a driving torque to a first driven gear and a second driven gear through a drive gear externally gear-meshed with the driven gears, and the shifting unit includes: a shift fork slidably mounted on a fork rail and activating the gear shifting; a profile drum connected to the first driven gear externally engaged with the drive gear, and having a profile groove formed along an exterior circumference of the profile drum; and a shift lug integrally formed with the shift fork and coupled with the profile groove.

A gear shifting apparatus for a multi-speed transmission includes: a shifting unit controlling gear shifting by a torque of an actuator; and a parking unit controlling a parking state by the torque of the actuator. In particular, the actuator includes a control motor transmitting a driving torque to a first driven gear of the shifting unit and a second driven gear of the parking unit through a drive gear externally gear-meshed with the driven gears, and the shifting unit includes: a fork slider slidably mounted on a fork rail, a shift fork integrally formed with the fork slider, a cam block connected to the first driven gear engaged with the drive gear and having a cam surface on an exterior circumference for shift-stages, a cam contact pin integrally formed with the fork slider and contacting the cam surface, and a return spring mounted around the fork rail.

A power transmission apparatus of a hybrid electric vehicle using an engine and a motor/generator as power sources includes: a first input shaft selectively connected to a rotor of the motor/generator; a second input shaft disposed external to the first input shaft, and selectively connected to the rotor; an idle shaft disposed in parallel with the first input shaft; an intermediate shaft shifting rotational power transmitted from the first input shaft to the idle shaft; a first output shaft shifting and outputting rotational power transmitted from the second input shaft and the idle shaft; a second output shaft shifting and outputting rotational power transmitted from the first input shaft; and a plurality of gear sets shifting the rotational power input through the first and second input shafts.

Power transmission system for hybrid electric vehicle

A gear shifting apparatus for a multi-speed transmission includes: a shifting unit controlling gear shifting by an actuator, and a parking unit controlling parking by the actuator. In particular, the actuator includes a control motor driving a driven gear through a drive gear externally gear-meshed with the driven gear, and the shifting and parking units are operated by a force received from a cam block fixed to the driven gear. The shifting unit includes a fork slider slidably mounted on a fork rail, a shift fork integrally formed with the fork slider, and a cam contact pin integrally formed with the fork slider and contacting the cam block.

A power transmission apparatus for a vehicle may include a first input shaft directly connected to a motor/generator, a second and third input shafts coaxial and selectively connectable to the first input shaft, a torque mediating shaft coaxial with the first input shaft, an intermediate shaft and output shaft disposed in parallel with the first input shaft, a first shifting section receiving torque from the third input shaft and outputting a modified torque to the torque mediating shaft, a second shifting section including first planetary gear set, shifting torque of the first input shaft to output the shifted torque to the torque mediating shaft, and selectively stopping the torque mediating shaft, and a third shifting section including second planetary gear set, forming an output torque in combination of torques from the first and second shifting sections and the second input shaft, and outputting the output torque to the output shaft.

Power transmission apparatus for a vehicle

A power transmission apparatus may include a first input shaft fixedly connected to an engine output shaft, a second input shaft external and selectively connectable to the first input shaft, a third input shaft selectively connectable to the first input shaft, an intermediate shaft and an output shaft mounted in parallel with the input shafts, a planetary gear set having first to third elements and mounted on the intermediate shaft where two of the three elements are selectively connectable to the intermediate shaft, a plurality of gear sets allowing torque flows between the various shafts and the planetary gear set, first and second synchronizers mounted on the at least one output shaft to selectively receive torques from the second and third input shafts through a plurality of paths and to transmit the received torque to the at least one output shaft, and four clutches.

Power transmission apparatus for vehicle

A synchronizer apparatus for a transmission includes: first and second shifting gears rotatable on an output shaft; a hub spline-coupled with the output shaft and having a slope portion having slanted surfaces; a sleeve spline-coupled with the hub; a key coupled with a recess of a slope portion; first and second clutch gears disposed between the hub and shifting gears; first and second outer rings and first and second inner rings disposed between the hub and clutch gears; first and second synchronizer cones disposed between the first inner and outer rings and the second inner and outer rings; a poppet ball unit disposed at the sleeve and contacting the key through a poppet ball; first and second push blocks disposed at the slanted surfaces; and first and second push springs inserted in spring holes formed at the push blocks to force push blocks to the slanted surfaces.

Synchronizer apparatus for transmission

A power transmission apparatus for a vehicle may include a first input shaft fixedly connected to an engine output shaft, a second input shaft coaxial with the first input shaft a third input shaft coaxial with the second input shaft, an intermediate shaft and at least one output shaft, a planetary gear set mounted on an axis of the intermediate shaft, a plurality of gear sets, each of which allows at least one torque flow between the intermediate shaft, the first, second, and third input shafts, the output shaft and the planetary gear set, a first synchronizer mounted on the output shaft, selectively receiving a torque from the second input shaft, a second synchronizer mounted on the output shaft, selectively receiving a torque from the third input shaft through two paths, and transmitting the received torque to the output shaft, and four clutches each of which facilitating selective connection.

A gear shifting apparatus for a multi-speed transmission includes a shifting unit controlling gear shifting by a torque of an actuator and a parking unit controlling a parking state by the torque of the actuator. The actuator includes a control motor transmitting a driving torque to driven gears of the shifting and parking units through a drive gear externally gear-meshed with the driven gears. The shifting unit includes a cam block connected to a first driven gear engaged with the drive gear and having a cam surface on an exterior circumference for shift-stages for controlling gear shifting. In addition, the parking unit includes a parking gear and a parking sprag having an engagement end for controlling engagement and disengagement of a parking state.

A power transmission apparatus for a vehicle includes: an input shaft receiving engine torque; a compound planetary gear set formed by first and second planetary gear sets and having first to fifth elements; a first shaft fixedly connected to the first element, fixedly connected to a motor/generator, and selectively connected to the input shaft; a second shaft fixedly connected to the second element and selectively connected to the input shaft; a third shaft fixedly connected to the third element and selectively connected to a housing; a fourth shaft fixedly connected to the fourth element, fifth shaft fixedly connecting the fifth element and an output gear; a sixth shaft selectively connected to the second shaft and the fourth shaft and selectively connected to the housing; engagement elements including a clutch and a brake; and an engagement unit selectively connecting the sixth shaft to the second shaft or the fourth shaft.

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Soonki Eo