INTERNAL COMBUSTION ENGINE VARIABLE VALVE DEVICE

Title:

INTERNAL COMBUSTION ENGINE VARIABLE VALVE DEVICE

Document Type and Number:

WIPO Patent Application WO/2007/052686

Kind Code:

A1

Abstract:

A control shaft (16) is used for modifying a maximum lift amount and a working angle. The control shaft (16) is rotated around its axis line by a motor (61). Moreover, a coupling member (48) coupling the control shaft (16) with a slider (26) is engaged in a groove (34) of the slider (26) and also engaged with a threaded portion (31) arranged at the outer circumference of the control shaft (16). In this case, in order to modify the maximum lift amount and the working angle, rotation of the motor (61) is transmitted via a gear directly to the control shaft (16). This eliminates the need of a rectilinear motion mechanism for converting rotation of the motor (61) into a rectilinear motion to be transmitted to the control shaft (16).

Inventors:

MIYAZATO YOSHIAKI (JP)
KOSHIMIZU TAKAHIDE (JP)
YUASA TAKAO (JP)
HIOKA EIICHI (JP)
YOSHIHARA YUJI (JP)
INOUE TAKASHI (JP)

Application Number:

PCT/JP2006/321823

Publication Date:

May 10, 2007

Filing Date:

November 01, 2006

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)
MIYAZATO YOSHIAKI (JP)
KOSHIMIZU TAKAHIDE (JP)
YUASA TAKAO (JP)
HIOKA EIICHI (JP)
YOSHIHARA YUJI (JP)
INOUE TAKASHI (JP)

International Classes:

F01L13/00; F01L1/34

Foreign References:

JP2005069056A	2005-03-17
JP2005226604A	2005-08-25
JP2001263015A	2001-09-26
JPH07187504A	1995-07-25
JPH01131129U	1989-09-06
JPH05109210A	1993-04-30

Attorney, Agent or Firm:

ONDA, Hironori (Ohmiya-cho 2-chome Gifu-sh, Gifu 31, JP)

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