| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the size of a valve timing controller which exhibits a necessary performance. Ž<P>SOLUTION: In the control valve, an advance port and a lock port are connected respectively to a supply port and a discharge port when a spool is moved to a lock range Rl including a stroke end Ex in a first direction X, while both the advance port and the lock port are connected to the supply port when the spool is moved to an advance range Ra deviating from the lock range Rl in a second direction Y. A biasing means which generates a biasing force to biase the spool in the first direction X through elastic deformation relative to a driving source which generates a driving force to move the spool in the second direction Y, varies the biasing force in the first direction X stepwise by a specified variation width Ws1 when the spool is moved to a limit position Pal on a lock range R1 side of the advance range Ra. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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