Hyundai Motor Company

Kia Motors Corporation

Borgwarner Inc.

Young-Taek Sun

Kyoung Pyo Ha

Dae Sung Kim

Chung Han Oh

Eui Chul Choi

Joong Soo Kim

Won-Jung Kwon

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

Growing community of inventors

Bucheon-si, South Korea

Young-Taek Sun