Hyundai Motor Company

Kia Motors Corporation

Borgwarner Inc.

Joong Soo Kim

Kyoung Pyo Ha

Dae Sung Kim

Back Sik Kim

Chung Han Oh

Hyuk Im

Eui Chul Choi

Sang Hee Lee

Won-Jung Kwon

Kwangsoon Choi

Young-Taek Sun

The present invention relates to a timing chain system including a hydraulic pressure timing chain tensioner autonomously controlling a hydraulic pressure for maintaining tension of a timing chain to effectively operate. The system may include: a crankshaft sprocket; a camshaft sprocket controlling exhaust or intake timing of the engine; a timing chain operably connecting the crankshaft and camshaft sprockets; a chain guide for the timing chain; a chain tensioner pushing the chain guide inward; and an oil supply unit for the chain tensioner. The chain tensioner may include a housing, an operating unit case fixed to the housing, a reciprocating plunger inserted into the operating unit case, a high pressure chamber, a low pressure chamber, a supply hydraulic path supplying oil from the oil supply unit to the low pressure chamber, and a regulator controlling hydraulic pressure of the low pressure chamber.

Hydraulic timing chain tensioner and timing chain system

A continuous variable valve duration apparatus may vary an opening duration of a valve. The continuous variable valve duration apparatus may include a camshaft in which a camshaft slot is formed, a cam portion of which a cam and a cam slot are formed thereto and of which a rotation center is identical to a rotation center of the camshaft and the cam portion of which a phase angle to the cam shaft is variable, and a duration control portion which varies the phase angle between the camshaft slot and the cam slot.

Continuous variable valve duration apparatus

Growing community of inventors

Anyang-si, South Korea

Joong Soo Kim