Hyundai Motor Company

Kia Motors Corporation

Kyungha Kim

Yeonho Kim

Baekyu Kim

Min Sung Kim

Sungik Bae

Wansoo Kim

Hee Ra Lee

Shin Hyoung Kim

Wan Ho Kim

Ki Nam Kim

Tal Chol Kim

Wan Soo Kim

Yeongil Choi

Jangmi Lee

Jinsook Lee

Jae Young Choi

YoungChul Kim

Hong Seok Yang

Jaeshin Yi

Taewon Kim

Won Il Lee

Shin Jong Kim

Jongyun Park

Bung Chul Rim

Heera Lee

Talchol Kim

Jae Hyuk Suh

Hyung Seuk Oh

Jin-sook Lee

Won-Il Lee

Eui-Cheol Chung

A power transmission apparatus of a hybrid electric vehicle may include an input shaft receiving an engine torque output from an engine, an output shaft disposed at a same axis with the input shaft and outputting a shifted torque, first and second motor/generators, a first shifting section including a first planetary gear set, outputting a rotation speed from the input shaft as inputted or increased, or forming an adjusted torque from the engine torque and torques of the first and second motor/generators, and outputting the adjusted torque, and a second shifting section including a compound planetary gear set formed as a combination of second and third planetary gear sets and outputting a shifted torque at least three stages from a torque received from the first shifting section to the output shaft.

Power transmission system of hybrid electric vehicle

A power transmission apparatus of a hybrid electric vehicle may include an input shaft receiving an engine torque, an output shaft disposed at a same axis with the input shaft and outputting a shifted torque, first and second motor/generators, a first shifting section including a compound planetary gear set formed as a combination of first and second planetary gear sets, forming an adjusted torque from the engine torque received through two paths and torques of the first and second motor/generators, and outputting the adjusted torque, and a second shifting section including a third planetary gear set and outputting a shifted torque of two stages from a torque received from the first shifting section to the output shaft.

Power transmission apparatus of a hybrid electric vehicle

A bearing unit for a drive motor, which is installed between a motor housing and a rotating shaft, includes: a bearing having two or more support bumps formed on the outer circumferential surface of an outer ring, and installed between the front or rear of the rotating shaft and the motor housing so as to rotatably support the rotating shaft with respect to the motor housing; and a bearing cover assembled to the motor housing, having a circular stepped surface formed on one surface such that an outer ring of the bearing is fitted to the stepped surface and supported in an axial direction. In particular, a support portion is formed on the stepped surface and is in contact with the support bumps so as to fix the outer ring in a rotation direction.

Bearing unit for drive motor

A power transmission system of a hybrid electric vehicle may include a first input device, a torque transmitting device, a second input device, an output device, and a final reduction device. The first input device may receive either or both of torques of an engine and a first motor/generator. The torque transmitting device may be disposed at a rear or downstream of the first input device and selectively receive torque from the first input device. The second input device may be disposed at a rear or downstream of the torque transmitting device, convert torque of a second motor/generator, and output the converted torque. The output device may receive torque from the torque transmitting device and/or the second input device and output the torque. The final reduction device may output the torque transmitted from the output device as driving torque.

A power transmission system of a hybrid electric vehicle includes an input shaft, a first planetary gear set having a first rotation element, a second rotation element directly connected to the input shaft, and a third rotation element directly connected to a first motor/generator, a second planetary gear set having a fourth rotation element directly connected to the first rotation element and a second motor/generator, a fifth rotation element, and a sixth rotation element selectively connected to the second rotation element, an output gear connected to the fifth rotation element, a first clutch selectively connecting the engine with the input shaft, a second clutch selectively connecting the second rotation element with the sixth rotation element, a first brake interposed between the third rotation element and a transmission housing, and a second brake interposed between the sixth rotation element and the transmission housing.

A power transmission system of a hybrid electric vehicle may include, a generating device adapted to generate electricity by torque of an engine or to start the engine. an input device adapted to receive the torque of the engine. a speed output device changing the torque transmitted from the input device into two speed steps and outputting the changed torque. an auxiliary power source disposed between the input device and the speed output device and adapted to supply torque to the speed output device or to generate electricity by the torque of the speed output device. a final reduction device outputting the torque transmitted from the speed output device.

A dual clutch device for a vehicle may include a drive motor provided in a motor housing, a clutch housing connected to the motor housing wherein a clutch may be provided in the clutch housing, and a cooling oil flowing unit forming a hydraulic line fluid-connecting the motor housing and the clutch housing and supplying a cooling oil to the drive motor and the clutch through the hydraulic line.

Dual clutch device for vehicle

A transmission for a hybrid vehicle is provided to implement one or more electric vehicle modes, two or more power split modes, and a plurality of fixed-gear ratio modes that can improve driving performance and fuel efficiency.

Transmission for hybrid vehicle

A parking system for a hybrid vehicle includes a transmission housing, a first motor section provided in the transmission housing, and mounted on an input shaft, a second motor section provided at the rear of the first motor section, and mounted on the input shaft, and a parking mechanism provided between the first motor section and the second motor section for selectively restraining a drive gear spline-coupled to the second motor section. The parking system for a hybrid vehicle can be reduced in overall size by improving the layout of the parking mechanism within the transmission with two motors and forming the parking gear integrally with the drive gear.

Parking system for hybrid vehicle

An exemplary embodiment of the present invention provides a power train for a hybrid vehicle can achieve three or more fixed gear ratio modes where a vehicle is driven at a fixed gear ratio, such as shift stages of common transmission, only by the driving force of an engine without driving a motor generator, as well as an electric vehicle mode, which is the basic drive modes of a hybrid vehicle, and two or more power division modes including an input division mode and a composite mode, thereby driving the vehicle with high efficiency in accordance with traveling conditions of the vehicle and improving fuel efficiency.

Power train for hybrid vehicle

A gear shifting system is described that includes an first shaft that is connected to a motor to be rotated thereby, a synchronizing gear, a first insert unit and a second insert unit protrude at both sides thereof, a first gear and a second gear configured to rotate around the first shaft, a first plate and a second plate, a first engagement aperture and a second engagement aperture, and a second shaft. The second shaft is configured to move the synchronizing gear in an axial direction so that the first insert unit is inserted into the first engagement aperture or the second insert unit is inserted into the second engagement aperture to transfer a torque of the synchronizing gear to the first gear or the second gear.

Gear shifting system for electric vehicle

According to the present invention, since a rotor shaft of a motor can be connected/disconnected with/from an input shaft of a transmission, it is possible to reduce or block vibration and noise between the motor and the transmission, thereby improving durability of the motor and achieving smooth gearshift. Further, when a vehicle is driven with the engine directly connected with the input shaft of the transmission, it is possible to easily implement driving sub-control and regenerative braking control by the motor, thereby achieving good properties against noise and vibration.

Power train of hybrid vehicle

The transmissions for a hybrid vehicle according to the present invention provide multiple electric vehicle modes, multiple power split modes, and multiple fixed-gear ratio modes, thereby increasing driving performance and fuel efficiency.

Growing community of inventors

Yongin-si, South Korea

Kyungha Kim