Title:
CONTROL DEVICE FOR OIL PRESSURE VALVE VARIABLE TIMING MECHANISM
Document Type and Number:
WIPO Patent Application WO/2012/063312
Kind Code:
A1
Abstract:
In an oil pressure valve variable timing mechanism equipped with a lock pin that locks the relative rotation of a vane rotor and the housing at the most retarded angle phase, a specified angle α is set so as to begin the release of the lock pin when a positive cam torque operates on the vane rotor. When the crank angle matches that specified angle α, the supply of oil pressure to an advance angle oil pressure chamber begins in order to release the engagement of the lock pin in the lock hole, thus enabling the lock pin to be reliably released before a change in the valve timing begins.
Inventors:
FUJIMURA HARUHITO (JP)
YOKOYAMA YUU (JP)
NUMAKURA MASAKI (JP)
YOKOYAMA YUU (JP)
NUMAKURA MASAKI (JP)
Application Number:
PCT/JP2010/069858
Publication Date:
May 18, 2012
Filing Date:
November 08, 2010
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
FUJIMURA HARUHITO (JP)
YOKOYAMA YUU (JP)
NUMAKURA MASAKI (JP)
FUJIMURA HARUHITO (JP)
YOKOYAMA YUU (JP)
NUMAKURA MASAKI (JP)
International Classes:
F01L1/34
Foreign References:
| JP2005207431A | 2005-08-04 | |||
| JP2005036789A | 2005-02-10 | |||
| JP2003020916A | 2003-01-24 | |||
| JP2010223172A | 2010-10-07 | |||
| JP2009024659A | 2009-02-05 | |||
| JP2009024600A | 2009-02-05 |
Other References:
See also references of EP 2474713A4
None
None
Attorney, Agent or Firm:
ONDA, Hironori et al. (JP)
Hironori Onda (JP)
Hironori Onda (JP)
Download PDF:
Claims:
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