Title:
ENGINE VARIABLE PHASE DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/157131
Kind Code:
A1
Abstract:
[Problem] To provide an automobile engine variable phase device having a self-locking mechanism that reliably maintains an operation for changing the opening and closing timing of an engine valve. [Solution] This engine variable phase device comprises: a drive rotating body that has a sprocket and a cylindrical section, and is driven by a crankshaft; a control rotating body that receives torque from a rotary operating force imparting means; a relative phase angle changing mechanism that changes the relative phase angle of a cam shaft relative to the drive rotating body in response to the rotation of the control rotating body; and a self-locking mechanism that utilizes cam torque to prevent the relative phase angle of the cam shaft from shifting relative to the drive rotating body. A relative displacement mechanism, which holds the sprocket in a relatively displaceable manner in a vertical direction with respect to the central axis of rotation, is disposed on the cylindrical section.
Inventors:
HOMMA KOICHI (JP)
NIIRO MASAAKI (JP)
NIIRO MASAAKI (JP)
Application Number:
PCT/JP2012/060690
Publication Date:
October 24, 2013
Filing Date:
April 20, 2012
Export Citation:
Assignee:
NITTAN VALVA (JP)
HOMMA KOICHI (JP)
NIIRO MASAAKI (JP)
HOMMA KOICHI (JP)
NIIRO MASAAKI (JP)
International Classes:
F01L1/356
Domestic Patent References:
| WO2012049727A1 | 2012-04-19 | |||
| WO2012001812A1 | 2012-01-05 | |||
| WO2011145175A1 | 2011-11-24 |
Attorney, Agent or Firm:
YAGI Hidehito et al. (JP)
Hideto Yagi (JP)
Hideto Yagi (JP)
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