Hyundai Motor Company

Kia Motors Corporation

Kia Motor Corporation

Jong Kuk Park

Chung Han Oh

Yun Seok Kim

Yun Ho Kim

Hyun Kyu Lim

An intermediate phase adjustment apparatus of intermediate phase continuous variable valve timing includes chambers and a diverter valve balancing oil pressure between the chambers. The chamber includes an advancing chamber and a retarding chamber formed between a rotor and a stator and supplied with oil through an oil channel. The diverter valve balances oil pressure between the chambers by sliding along an oil line through which the oil moves only in one direction between the chambers so that the oil selectively moves from a chamber having higher pressure to a chamber having lower pressure due to a pressure difference.

Intermediate phase adjustment apparatus of CVVT

The present disclosure provides generally for an apparatus for opening and closing a channel. A diverter valve may open and close the channel by sliding and having a pressure reducing portion at a side to decrease a side force due to hydraulic pressure.

Apparatus for opening and closing channel

An intermediate phase adjustment apparatus of a CVVT includes check valves provided to prevent backflow of oil when the oil moves from one chamber to another chamber in order to secure a parking position of a lock pin in a CVVT of which an advance chamber and a retard chamber are formed between a rotor and a stator, and an oil inlet portion formed at the stator to correspond to inlet portions of the check valves, wherein an oil inlet portion provided at one chamber is formed larger than an oil inlet portion provided at the other chamber by a predetermined size, and the open angles of the check valves for making oil to flow into a chamber are increased, thereby preventing an offset occurrence by a cam torque.

Growing community of inventors

Gyeonggi-do, South Korea

Jong Kuk Park