Variable valve timing system
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United States of America Patent
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Aug 8, 2023
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N/A
app pub date -
Feb 7, 2023
filing date -
Feb 10, 2022
priority date (Note) -
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Abstract
There is provided a variable valve timing system for an engine in which a cam chain chamber is formed in a cylinder and a cylinder head, the variable valve timing system including: a variable valve device configured to change an opening and closing timing of a valve; and an oil control valve configured to control a hydraulic pressure with respect to the variable valve device. The oil control valve is disposed on an outer surface of the cylinder, which is an outer wall of the cam chain chamber. An oil path for hydraulic pressure control enters the outer wall of the cam chain chamber from the oil control valve, extends from a side of the cylinder to a side of the cylinder head, and crosses the cam chain chamber to the variable valve device through an inner wall of the cam chain chamber.
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