VALVE OPENING/CLOSING TIMING CONTROL DEVICE

WIPO Patent Application WO/2014/192355

A1

The present invention restricts an intermediate lock phase of valve opening/closing timing during the start-up of an internal combustion engine and maintains starting properties. A valve opening/closing timing control device is provided with: an intermediate lock mechanism that divides a fluid pressure chamber that is formed by a drive-side rotating body that rotates synchronously with a crankshaft and a driven-side rotating body that rotates synchronously with a camshaft into an advance chamber and a delay chamber, and that restricts the relative rotation phase of the driven-side rotating body with respect to the drive-side rotating body to an intermediate lock phase; an electromagnetic valve that is capable of switching the working fluid supply destination to the advance chamber or the delay chamber; a phase detection sensor; and a control unit that issues a command to the electromagnetic valve to switch the working fluid supply destination to a working fluid supply destination at which the driven-side rotating body shifts to the intermediate lock phase when the supply of energy to the electromagnetic valve is stopped and the relative rotation phase during start-up at the electromagnetic valve that sets the working fluid supply destination to the delay chamber or the advance chamber is closer to the most delayed phase or the most advanced phase than to the intermediate lock phase.

KOBAYASHI MASAKI (JP)
UEDA KAZUO (JP)

PCT/JP2014/055779

December 04, 2014

March 06, 2014

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AISIN SEIKI (JP)

F01L1/356

JP2007154748A	2007-06-21
JP2006170025A	2006-06-29
JP2002349220A	2002-12-04
JP2002250240A	2002-09-06

R&C IP LAW FIRM (JP)
Patent business corporation R&C (JP)

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