VALVE OPENING/CLOSING TIMING CONTROL DEVICE

Title:

VALVE OPENING/CLOSING TIMING CONTROL DEVICE

Document Type and Number:

WIPO Patent Application WO/2015/015960

Kind Code:

A1

Abstract:

A valve opening/closing timing control device capable of quickly determining that an intermediate locked phase has been attained, said control device being equipped with: an intermediate lock mechanism capable of switching between a locked state, wherein a lock member provided on a drive-side rotary member protrudes and fits into a recess provided on a driven-side rotary member, thereby holding the relative rotational phase in an intermediate locked phase, and an unlocked state, wherein the lock member withdraws from the recess, thereby releasing the hold; a phase control unit that controls the supply of fluid to a retard chamber and the discharge of fluid from an advance chamber, or controls the discharge of fluid from the retard chamber and the supply of fluid to the advance chamber, so as to enable the lock member to attain the intermediate locked phase; and a determination unit which, after the execution of a control whereby fluid is supplied to the retard chamber and fluid is discharged from the advance chamber or whereby fluid is discharged from the retard chamber and fluid is supplied to the advance chamber, and the lock member is controlled so as to move toward a determination phase that has been set at a different positon than the intermediate locked phase in the recess, determines whether the lock member has attained the determination phase. When the result of the determination is that the lock member has not attained the determination phase, the determination unit determines that the relative rotation phase is in the locked state.

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Inventors:

NUNAMI KOJI (JP)
IWAYA TAKASHI (JP)
AMANO HIROYUKI (JP)
KOBAYASHI MASAKI (JP)

Application Number:

PCT/JP2014/066854

Publication Date:

February 05, 2015

Filing Date:

June 25, 2014

Export Citation:

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Assignee:

AISIN SEIKI (JP)

International Classes:

F01L1/356

Foreign References:

JP2007132272A	2007-05-31
JP2011032905A	2011-02-17
JP2011132932A	2011-07-07
JP2010255499A	2010-11-11
JP2010138699A	2010-06-24
JP2010138699A	2010-06-24

Other References: