VALVE ON/OFF TIME CONTROL DEVICE

Title:

VALVE ON/OFF TIME CONTROL DEVICE

Document Type and Number:

WIPO Patent Application WO/2015/098513

Kind Code:

A1

Abstract:

Provided is a valve on/off time control device which makes it possible to start an internal combustion engine quickly and reliably even in a state in which the relative rotation phase is not locked in a lock phase. This valve on/off time control device is provided with a drive-side rotating body which rotates synchronously with a crank shaft, a driven-side rotating body which rotates as a single body with a cam shaft, a phase detection mechanism which detects the relative rotation phase between the drive-side rotating body and the driven-side rotating body, a retard chamber and an advance chamber which are formed between the driving-side rotating body and the driven-side rotating body, a lock mechanism which can lock the relative rotation phase to a lock phase between the most advanced phase and the most retarded phase, a supply and discharge mechanism which supplies and discharges a working fluid to and from the advance chamber, the retard chamber and the lock mechanism, and a control unit which controls operation of the supply and discharge mechanism. When starting the internal combustion engine, if the relative rotation phase detected by the phase detection mechanism is not in the lock phase, the control unit controls the supply and discharge mechanism to sequentially stop supply of the work fluid to the retard chamber and the advance chamber.

Inventors:

KOBAYASHI MASAKI (JP)
MASUDA SHOHEI (JP)
UEDA KAZUO (JP)

Application Number:

PCT/JP2014/082627

Publication Date:

July 02, 2015

Filing Date:

December 10, 2014

Export Citation:

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Assignee:

AISIN SEIKI (JP)

International Classes:

F01L1/356

Foreign References:

JP5273312B1	2013-08-28
JP2002122009A	2002-04-26
JP2013194552A	2013-09-30
JP2013053616A	2013-03-21