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Title:
VARIABLE VALVE DEVICE OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2011/086702
Kind Code:
A1
Abstract:
Provided is a variable valve device of an internal combustion engine, wherein the operation state of an intake valve can be changed to a valve halt state in which the closing of the intake valve is maintained, by continuously changing the lift and/or the working angle of the intake valve. The operation time required to shift the operation state from a valve working state in which the lift and/or the working angle of the intake valve is large, to the valve halt state can be preferably reduced. A swing arm (70) having a profile to be in contact with a second roller (76) is provided. A variable intake valve device (32) is configured so that the contact position of the second roller (76) on the profile of the swing arm (70) varies to change the lift and the working angle of the intake valve (28). The profile of the swing arm (70) is formed so that the operation state of the intake valve (28) is shifted to the valve halt state when the period for closing the intake valve (28) is within a predetermined range in the vicinity of the bottom dead point for sucking air.

Inventors:
EZAKI SHUICHI (JP)
Application Number:
PCT/JP2010/050508
Publication Date:
July 21, 2011
Filing Date:
January 18, 2010
Export Citation:
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Assignee:
TOYOTA MOTOR CO LTD (JP)
EZAKI SHUICHI (JP)
International Classes:
F01L13/00
Foreign References:
JP2008121458A2008-05-29
JP2008223677A2008-09-25
JP2006299875A2006-11-02
JP2000073901A2000-03-07
Attorney, Agent or Firm:
TAKAHASHI, Hideki et al. (JP)
Hideki Takahashi (JP)
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Claims:



 
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