Hydraulic valve actuation system

An engine valve actuation system may include an actuation assembly having a body, a slidable piston, and first, second, and third chambers defined between the piston and the body. Low pressure and high pressure fluid sources may be included. A first fluid passage may connect the low pressure fluid s...

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Bibliographic Details
Main Authors NAN XINSHUANG, LEMAN SCOTT ALAN, CORNELL SEAN OLEN
Format Patent
LanguageEnglish
Published 31.05.2005
Edition7
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:An engine valve actuation system may include an actuation assembly having a body, a slidable piston, and first, second, and third chambers defined between the piston and the body. Low pressure and high pressure fluid sources may be included. A first fluid passage may connect the low pressure fluid source to the second chamber. A second fluid passage may connect the high pressure fluid source to the second chamber, and a third fluid passage may connect the high pressure fluid source to the third chamber. A control valve may be connected to the low pressure fluid source, to the high pressure fluid source, and to the first chamber. The control valve may be configured to move between a first position at which the high pressure fluid source is connected to the first chamber, and a second position at which the low pressure fluid source is connected to the first chamber.
Bibliography:Application Number: US20020259599