VARIABLE VALVE TIMING MECHANISM WITH INTERMEDIATE LOCKING MECHANISM AND FABRICATION METHOD THEREOF

Title:

VARIABLE VALVE TIMING MECHANISM WITH INTERMEDIATE LOCKING MECHANISM AND FABRICATION METHOD THEREOF

Document Type and Number:

WIPO Patent Application WO/2010/116532

Kind Code:

A1

Abstract:

Rattling of a vane rotor can be easily suppressed, while ensuring a reliable lock, by forming an intermediate locking mechanism that comprises a first and a second lock pin (10, 11), which are provided in a vane rotor (2) and can be individually extended and retracted; an advance angle limiting groove (12), which is provided in a cover (6) and which engages with the first lock pin (10) when the first lock pin (10) is extended and thereby locks rotation of the vane rotor (2) toward the advance angle side in an intermediate locked phase; and a lag limiting groove (13), which is installed in a cam sprocket (5) and which engages with the second lock pin (11) when the second lock pin (11) is extended and thereby locks rotation of the vane rotor (2) toward the lag side in an intermediate locked phase.

Inventors:

YOKOYAMA YUU (JP)
NUMAKURA MASAKI (JP)

Application Number:

PCT/JP2009/057387

Publication Date:

October 14, 2010

Filing Date:

April 10, 2009

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)
YOKOYAMA YUU (JP)
NUMAKURA MASAKI (JP)

International Classes:

F01L1/34

Foreign References:

JP2003214123A	2003-07-30
JP2009024659A	2009-02-05
JP2004257313A	2004-09-16
JP2006170085A	2006-06-29

Other References: