Hyundai Motor Company

Hitachi Automotive Systems, Ltd.

Jaechun Kim

Yoshihiko Yamada

Seiji Tsuruta

Hyung Ick Kim

Hong Wook Lee

Bonghoon Han

Manabu Katayama

Donghoon Seok

A variable valve duration apparatus may include a first cam rotating with a camshaft; a second cam rotating with the camshaft; a first operation device that is operated by the first cam to generate a valve lift; a second operation device that is operated by the second cam to generate the valve lift; and a controller controlling the first operation device or the second operation device to generate the valve lift according to an operation state of an engine.

Variable valve duration apparatus

A valve timing control apparatus of an internal combustion engine may include a driving rotational body to which torque is transmitted from a crankshaft, a driven rotational body fixed to a camshaft to which torque is transmitted from the driving rotational body, an electric motor disposed between the driving rotational body and the driven rotational body and relatively rotating the driving rotational body and the driven rotational body when electric power is applied thereto, and a deceleration mechanism that decelerates a rotational speed of the electric motor and transmits the decelerated rotational speed to the driven rotational body.

Valve timing control apparatus of internal combustion engine

Growing community of inventors

Hwaseong-si, South Korea

Jaechun Kim