System and method for variable actuation of valves of an internal combustion engine
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United States of America Patent
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Oct 11, 2022
Grant Date -
Jun 3, 2021
app pub date -
Dec 1, 2020
filing date -
Dec 2, 2019
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Abstract
In an internal combustion engine provided with an electro-hydraulic system for variable actuation of the intake valves of the engine, each cylinder has two intake valves, which are associated with two intake conduits and are controlled by a single cam of a camshaft through a single hydraulic circuit. The communication of the hydraulic actuators of the two intake valves with a discharge channel is controlled by two electrically-actuated control valves, both of an on/off two-position type, arranged in series with each other along a hydraulic line for communication between the a pressure volume and the discharge channel.
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