Hyundai Motor Company

Kia Motors Corporation

Ki Been Lim

Woochurl Son

Seong Wook Hwang

Seongwook Ji

Wonmin Cho

Ki Tae Kim

Woo Jin Chang

Yong Uk Shin

Hyu Tae Shim

Kijong Park

Byeong Ho Soh

Hyun Sik Kwon

Jae Chang Kook

Kang Soo Seo

Ki Dong Kim

Gyung Cheol Lee

Dongwoo Kim

Chon Ok Kim

Juhyeon Park

Ilhan Yoo

Hye Jin Lim

Jin Yong Kim

Dong Hee Han

Sueng Ho Lee

Sun Sung Kwon

Minho Chae

Soonki Eo

Ma Ru Kang

Cheol Ho Jang

Yong Sug Choi

Han Ki Hong

Sangwon Seo

Changgi Yeo

Gang Soo Seo

Jong Soo Kim

Jong Sool Park

Jung Woo Kim

Seungwoo Hong

Yeongseop Park

Wootae Kim

Jihun Lee

Hwan Hur

Yong Woo Shin

Choung Wan Son

Dong Hyup Kang

Bo Hee Lee

Young Chan Gweon

Chong Tae Yang

Ki DOng Kim

Jekee Lee

Jihwan Byun

Hwangbok Lee

Nag Geun Song

Jin San Kim

Young Chul Jeong

Yunsung So

A vehicle supercharging system may include: an engine; a transmission; a dual-turbine electric supercharger that compresses air and has a first turbine and a second turbine; an engine-side supercharging path part that branches out from an air supplying line configured to supply air to the engine, passes through the first turbine and then joins into the air supplying line; a transmission-side supercharging path part that sucks air separately from the engine-side air supplying line, passes through the second turbine, and then supplies compressed air to the transmission; and a controller that operates the dual-turbine electric supercharger according to a driving state of a vehicle and that individually controls valves provided in the engine-side supercharging path part and the transmission-side supercharging path part.

Vehicle supercharging system and control method thereof

A power transmission apparatus for a hybrid electric vehicle includes: a planetary gear set including first, second and third rotary elements; a first shaft fixedly connected to an output shaft of an engine; a second shaft fixedly connected to the first rotary element and a first motor/generator; a third shaft receiving rotational power from the first shaft; a fourth shaft selectively connected with the first shaft, and the fourth shaft selectively receiving rotational power from the first shaft or from the third rotary element; a fifth shaft fixedly connected to a second motor/generator; and a sixth shaft transmitting rotational power transmitted from the fifth shaft to a final reduction gear of the differential gear. In particular, the six shafts are connected to external gears mutually by four gear sets so that rotational power is transmitted.

Power transmission apparatus of hybrid electric vehicle

A vehicle transmission system may include an engine outputting power from fuel combustion, a transmission coupled to the engine and including at least one clutch to control torque input from the engine, an supercharger compressing an intake air and supplying the compressed intake air to the engine, and a control unit, where, when a predetermined acceleration condition is satisfied, the control unit is configured to operate the supercharger and to control the transmission according to a transmission clutch stroke operation map corresponding to the operation of the electric supercharger, to vary an engagement speed of the clutch when the supercharger is operated.

Vehicle transmission system and a method thereof

A power transmission apparatus of a hybrid electric vehicle using an engine and first and second motor/generators as power sources, may include a first shaft, a second shaft which is selectively connectable to the first shaft and fixedly connected to the first motor/generator, a third shaft selectively connectable to the first shaft, a fourth shaft coaxially mounted with the third shaft, a fifth shaft transferring rotational power transmitted from the third and fourth shafts to a final reduction gear, a sixth shaft fixedly connected to the second motor/generator, a seventh shaft transferring rotational power transmitted from the sixth shaft to the final reduction gear and a planetary gear set including first, second, and third rotation elements wherein the first to seventh shafts are externally gear-meshed with each other by four gear sets so that rotational power is transmitted.

A power transmission apparatus includes: a first input shaft always receiving an input torque from an engine; second and third input shafts coaxially disposed and selectively connected with the first input shaft; a torque mediating shaft selectively connected with the first input shaft or a transmission housing; first and second intermediate shafts and an output shaft respectively disposed in parallel with the first input shaft; a first preliminary shifting section receiving a torque through a first input gear set, selectively shifting the received torque, and outputting the shifted torque; a second preliminary shifting section including a second shifting gear set which outputs a torque from the first input shaft and stops; and a compound shifting section forming an output torque by the input torque and the first and second shifted torques.

Power transmission apparatus for vehicle

A power transmission apparatus includes a first input shaft receiving an input torque, second and third input shafts coaxially disposed and selectively connected with the first input shaft, first and second torque mediating shafts coaxially disposed with the first input shaft, first and second intermediate shafts and an output shaft disposed in parallel with the first input shaft, a first shifting section receiving a torque from the third input shaft and outputting a plurality of first shifted torques, a second shifting section including a first planetary gear set selectively connected with the first input shaft and outputting a plurality of second shifted torques, and a compound shifting section forming an output torque by the input torque and the first and second shifted torques.

Power transmission apparatus for a vehicle

A power transmission apparatus configured for a vehicle, may include a motor/generator including a motor shaft a first input shaft selectively connectable to the motor shaft, a second input shaft externally disposed with the first input shaft and selectively connectable to the motor shaft, a third input shaft externally disposed with the second input shaft and selectively connectable to the motor shaft, a first torque mediating shaft formed as a hollow shaft and coaxially and externally disposed with the first input shaft without rotational interference therebetween, an intermediate shaft parallel with the first input shaft, a first shifting section receiving a torque and outputting the shifted torque, and a second shifting section including a first planetary gear set selectively receiving the torques from the first shifting section and the third input shaft, respectively, and outputting shifted torque through one gear set.

The present disclosure provides a planetary gear train of an automatic transmission for a vehicle. The planetary gear train may include: an input shaft receiving torque of an engine; an output shaft outputting changed torque; a first planetary gear set including first, second, and third rotation elements; a second planetary gear set including fourth, fifth, and sixth rotation elements; a third planetary gear set including seventh, eighth, and ninth rotation elements; a fourth planetary gear set including tenth, eleventh, and twelfth rotation elements. The planetary gear train improves power delivery performance and fuel economy by achieving at least eleven forward speed stages and widening speed ratio (or gear ratio) with a reduced number of constituent elements being used, and secures linearity of step ratios.

Planetary gear train of automatic transmission for vehicles

A power transmission apparatus for a vehicle may include a first input shaft directly connected to an engine, a second input shaft selectively receiving torque of the engine through a first clutch, a third input shaft selectively receiving the torque of the engine through a second clutch, an intermediate shaft disposed in parallel with the first, second, and third input shafts, a transfer gear fixedly disposed on the intermediate shaft, an first shifting member outputting first and second preliminarily shifted torques, an second shifting member outputting third and fourth preliminarily shifted torques, a third shifting member outputting eight forward speed stage stages and one reverse speed stage, and an auxiliary power source disposed on a supply of the torque transmitted from the first shifting member and the second shifting member to the third shifting member and supplying torque to the third shifting member.

A power transmission apparatus for a vehicle may include a first input shaft, a second input shaft, a third input shaft, an intermediate shaft disposed parallel to the first, second, and third input shafts, a transfer gear fixedly disposed on the intermediate shaft and outputting torque thereof, an first shifting member changing torque of an engine into first and second preliminarily shifted torques, and outputting the first and second preliminarily shifted torques, an second shifting member changing the torque of the engine into third and fourth preliminarily shifted torques, and outputting the third and fourth preliminarily shifted torques, and a third shifting member changing the torque of the engine transmitted from the first input shaft and the first preliminarily shifted torque to the fourth preliminarily shifted torque selectively transmitted from the first shifting member or the second shifting member into eight forward speed stages and one reverse speed stage.

A power transmission apparatus for a vehicle includes a first input shaft directly connected to an engine, a second input shaft enclosing the first input shaft and rotating independently from the first input shaft and selectively receiving torque of the engine through a first clutch, a third input shaft enclosing the second input shaft and rotating independently from with the second input shaft and selectively receiving the torque of the engine through a second clutch, an intermediate shaft disposed in parallel with the first, second and third input shafts, a transfer gear fixedly disposed on the intermediate shaft and outputting torque of the intermediate shaft, a first shifting member, a second shifting member, and a third shifting member for changing the torque of the engine.

A six-speed powertrain of an automatic transmission includes a first single pinion planetary gear set having a first sun gear,twoafirst planetcarrierscarrier, a first planetary gear, and a first ring gear. A second single pinion planetary gear set has a second sun gear, a second planetary gear, and a second ring gear. A double pinion planetary gear set has a third sun gear, a pair of third planetary gears, and a third ring gear. One planetary gear of the pair of third planetary gears and the second planetary gear are commonly connected by a common planet carrier such that the second and third planetary gears may independently rotate.

Six-speed powertrain of an automatic transmission

A hydraulic control system applicable to a power train of a seven-speed automatic transmission for a vehicle having six friction members. Enhanced overall performance is achieved by minimization of shift shock and an enhancement of fuel consumption as a consequence of achieving precise and effective control.

Hydraulic control system of 7-speed automatic transmission for vehicles

A six-speed powertrain of an automatic transmission is formed by combining three simple planetary gear sets, and an output element is realized as a single element without combination with a clutch. Therefore, because a torque load of a respective clutch is reduced, durability may be enhanced and a length of the transmission may be minimized.

Six-speed powertrain of automatic transmission

Six forward speeds and one reverse speed may be realized with minimized length and weight of the transmission by employing two single pinion planetary gear sets and a double pinion planetary gear set. One planetary gear of the double pinion planetary gear set is interconnected with an adjacent second planetary gear of the second single pinion planetary gear set by a common planet carrier such that they may rotate independently, and at the same time, at least two ring gears are integrated so as to enhance strength in the axial direction.

Growing community of inventors

Yongin-si, South Korea

Ki Been Lim