VALVE TIMING CONTROLLER

When a spool is positioned in a lock range including a stroke end in a first direction, an advance port and a lock port are respectively connected to a supply port and a discharge port. When the spool is positioned in an advance range deviating from the lock range in a second direction, the advance...

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Bibliographic Details
Main Author TAKENAKA AKIHIKO
Format Patent
LanguageEnglish
Published 15.07.2010
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:When a spool is positioned in a lock range including a stroke end in a first direction, an advance port and a lock port are respectively connected to a supply port and a discharge port. When the spool is positioned in an advance range deviating from the lock range in a second direction, the advance port and the lock port are fluidly connected to the supply port. While a driving source generates a driving force to move the spool in the second direction, a biasing member biases the spool in the first direction. When the spool is positioned at a limit position of the advance range, a biasing force biasing the spool in the first direction is stepwise varied by a specified variation width.
Bibliography:Application Number: US20100685197