Hyundai Motor Company

Kia Motors Corporation

Kia Corporation

Myunghwa Ind. Co., Ltd.

Unick Corporation

Sung Wook Jang

Da Hui Kim

Gyu Chull Doh

Jin Hee Lee

Minsu Kim

Hyung Suk Kim

Joung Chul Kim

Tae Whan Kim

Chang-Hoon Lee

June Ho Lee

Hyun Chul Kim

Jin Seung Lim

Chang Yeon Cho

Joo Hang Lee

JungWook Lee

Byung Jun Hwang

Hyeonjin Kim

Hyun Duk Chang

Woo Jung Kim

Chi Hun Cho

Kihyup Kim

Taegeun Kim

Jaeyeol Yun

Chulwan Park

Kyoo Ho Lee

Yongho Jung

Yun Seok Sung

Chin Chul Choi

Dong Kuk Han

Seungwan Noh

Youngho Moon

An apparatus for reducing noise of a gear pump through uneven pitch-simulated control includes a calculation unit to calculate different control current values for each tooth of a teeth order by applying a teeth number, the teeth order, and a teeth angle of the gear pump in which a plurality of teeth are evenly formed, a storage unit to map and store the teeth order and the different control current values corresponding to the teeth order for each tooth, and a current controller to variably generate the control current value mapped corresponding to the teeth order when each tooth reaches a reference position when the gear pump rotates by a motor, wherein the control current value is added to a reference current value of a motor control signal and applied to the motor.

Apparatus for reducing noise of gear pump through uneven pitch-simulated control and method thereof

An electric hydraulic pump for a transmission includes: a motor including a motor cover, a motor case coupled with the motor cover, and a stator and a rotor disposed within the motor cover and the motor case; and a pump including a pump case forming a pump chamber, and a gear rotor which is disposed within the pump chamber, connected with the rotor through a motor shaft and receives rotational power of the motor. In particular, a plurality of oil circulation holes are formed in the motor cover and a connecting hole is formed in the motor cover corresponding to the pump case, and an oil flow channel is formed within the pump case for connecting the connecting hole and an oil inlet of the pump chamber.

Electric oil pump for hydraulic control and oil supplying system provided with the same

A parking brake system that uses a locking device to maintain a parking release condition may include a control lever that may be rotatably connected to the exterior of a transmission, a shift cable that may be rotatably connected to an end of the control lever, the locking device that may be connected to the other end of the shift cable and selectively maintains the parking release condition, and a parking device that includes a piston member in a cylinder and that may be connected to the end of the control lever and uses hydraulic pressure to move the control lever and the shift cable such that the parking release condition may be maintained.

Parking brake system

A locking apparatus for a parking brake includes a parking lever, a parking lever spring applying a restoring force to the parking lever, a cylinder of which an oil hole is formed therein, a piston comprising a piston rod connected to the parking lever and a piston main body disposed within the cylinder, and the piston movable along length direction of the cylinder according to supplying or releasing of oil through the oil hole, a solenoid valve, a locking unit disposed within the cylinder for locking the piston when the solenoid valve is supplied electric power and for locking the piston when the solenoid valve is not supplied electric power and an emergency parking device which is connected to the locking unit and selectively forcibly moves the locking unit.

Locking apparatus for parking brake

A locking apparatus for a parking brake includes a parking lever, a parking lever spring applying a restoring force to the parking lever, a cylinder of which an oil hole is formed thereto, a piston comprising a piston rod connected to the parking lever and a piston main body disposed within the cylinder, and the piston movable along length direction of the cylinder according to supplying or releasing of oil through the oil hole, a solenoid valve and a locking unit disposed within the cylinder for unlocking the piston when the solenoid valve is supplied electric power and for locking the piston when the solenoid valve is not supplied electric power.

Growing community of inventors

Suwon-si, South Korea

Sung Wook Jang