HYDRAULIC CIRCUIT FOR VALVE DEACTIVATION

Methods and systems are provided for deactivating a valve actuation mechanism. In one example, a system may include first and second hydraulic galleries for supplying hydraulic fluid to a switchable roller finger follower, and a third hydraulic gallery for promoting the flow of air away from the fir...

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Bibliographic Details
Main Author Crowe Jonathan Denis
Format Patent
LanguageEnglish
Published 29.09.2016
Subjects
BLASTING
CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
STEAM ENGINES
WEAPONS
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Summary:Methods and systems are provided for deactivating a valve actuation mechanism. In one example, a system may include first and second hydraulic galleries for supplying hydraulic fluid to a switchable roller finger follower, and a third hydraulic gallery for promoting the flow of air away from the first hydraulic gallery. The third hydraulic gallery may receive a restricted flow of oil from a hydraulic restrictor incorporated into an annular clearance between a VCT oil control valve and a mating bore within the cylinder head.
Bibliography:Application Number: US201514665448