Title:
VALVE OPEN/CLOSE PERIOD CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/151897
Kind Code:
A1
Abstract:
A valve open/close period control device is provided with: a drive-side rotational solid; a driven-side rotational solid; an intermediate locking mechanism for selectively switching between a locked state in which displacement of a relative rotational phase is restrained in an intermediate locking phase in the relative rotational phase of the driven-side rotational solid with respect to the drive-side rotational solid, and an unlocked state in which the locked state is released; and a solenoid valve for changing a drive current applied to a drive source to displace the relative rotational phase in an angle-advancing direction or an angle-delaying direction, and causing the intermediate locking mechanism to switch between the locked state and the unlocked state. During a prescribed operation of an internal combustion engine, the valve open/close period control device sets the drive current value for switching to the unlocked state to a boundary value, which differs by a prescribed value from the drive current value used when the drive current was changed to switch from the unlocked state to the locked state.
Inventors:
AMANO HIROYUKI (JP)
KOBAYASHI MASAKI (JP)
YAMAKAWA YOSHIAKI (JP)
KOBAYASHI MASAKI (JP)
YAMAKAWA YOSHIAKI (JP)
Application Number:
PCT/JP2015/077089
Publication Date:
September 29, 2016
Filing Date:
September 25, 2015
Export Citation:
Assignee:
AISIN SEIKI (JP)
International Classes:
F01L1/356; F16K31/06
Foreign References:
JP2006170024A | 2006-06-29 | |||
JP2008255914A | 2008-10-23 | |||
JP2003172109A | 2003-06-20 |
Other References:
See also references of EP 3276132A4
Attorney, Agent or Firm:
R&C IP LAW FIRM (JP)
Patent business corporation R&C (JP)
Patent business corporation R&C (JP)
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