Hyundai Motor Company

Kia Motors Corporation

Kia Corporation

Jongyun Park

Jae Young Choi

Yeonho Kim

Min Sung Kim

Ki Nam Kim

Kyungha Kim

JungWoo Seo

Sungik Bae

Shin Jong Kim

Taewon Kim

Wan Soo Kim

Bung Chul Rim

Sunghyun Cho

Dongwon Jeoung

Jin-sook Lee

Sangmo Ha

Won-Il Lee

Eui-Cheol Chung

A transmission control system of an electric vehicle includes a motor configured to generate drive torque; a transmission configured to perform multi-stage shifting using a dog clutch in a restraint relationship with a one-way clutch configured to transmit forward power of the motor; a speed sensor configured to measure a rotation speed on an output side of the transmission; a motor control unit configured to control the drive torque from the motor according to a driver's accelerator position signal (APS) value; and a vehicle control unit configured to control the multi-stage shifting of the transmission according to a torque command based on the APS value, and to perform clutch alignment control by moving up a sleeve in a reverse direction to contact a hub through a reverse rotation operation of gear teeth by applying reverse rotation torque of predetermined drive force through the motor in a pre-engagement state of the dog clutch.

Transmission control system and method for an electric vehicle

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.

Power transmission system of hybrid electric vehicle

A synchronizing device for a transmission may include a clutch hub splined on a rotation shaft, a sleeve engaged to an external circumferential portion of the clutch hub by interposing a blocking key therebetween, the sleeve being movable axially, a clutch gear having a cone surface and disposed at both sides of the sleeve without an interference with the rotation shaft, and a blocker ring disposed between the clutch hub and the clutch gear and frictionally engaged to the cone surface of the clutch gear, wherein the blocker ring includes a servo load exerted portion and a key load exerted portion disposed alternately in a circumferential direction of the blocker ring and respectively having a key contacting surface, and the key contacting surface of the servo load exerted portion may be disposed axially apart from the key contacting surface of the key load exerted portion by a predetermined distance.

Synchronizing device for transmission

A method for assembling a synchronizer by using a jig, the synchronizer including a synchronizer hub, at least one of recesses formed radially at an external circumference of the synchronizer hub, a synchronizer key disposed in the recess, a synchronizer sleeve enclosing the exterior circumference of the synchronizer hub and axially movably engaged to the synchronizer hub, and a spring disposed between the synchronizer hub and the synchronizer key, may include locating the synchronizer key and the spring in the recess of the synchronizer hub, engaging the jig to the synchronizer hub by inserting a rear portion of the jig in the recess axially, engaging the synchronizer sleeve to the synchronizer hub, and removing the jig from the synchronizer hub.

Method for assembling synchronizer and jig for assembling synchronizer

A synchronizing device of a manual transmission may include a clutch hub splined on a rotation shaft, a sleeve engaged to an external circumferential portion of the clutch hub by interposing a blocking key therebetween, the sleeve being movable axially, a clutch gear having a cone portion and disposed at both sides of the sleeve without an interference with the rotation shaft, a blocker ring frictionally engagable to the cone portion of the clutch gear, and a normal gear and a groove gear formed at an interior circumference of the sleeve, wherein a width of a middle portion of the groove gear may be wider than that of the normal gear, and the middle portion of the groove gear has a key supporting portion and a locking groove formed on the key supporting portion and engaged to an exterior circumference of the blocking key.

Synchronizing device for manual transmission

Growing community of inventors

Whasung-Si, South Korea

Jongyun Park