VARIABLE VALVE GEAR FOR INTERNAL COMBUSTION ENGINE

Title:

VARIABLE VALVE GEAR FOR INTERNAL COMBUSTION ENGINE

Document Type and Number:

Japanese Patent JP2007205301

Kind Code:

A

Abstract:

To reduce diameter of a control shaft in a variable valve gear.

In the variable valve gear having a slider gear and an arm assembly which consists of an input arm and an output arm provided on the control shaft in such a manner that the same can rock arranged for each cylinder and changing valve characteristics of an engine valve (intake valve 21) by changing relative phase difference of the input arm and the output arm of the arm assembly by displacement of the slider gear interlocking with the control shaft, the control shaft 32 is divided for each cylinder 12 (#1-#4) and the control shaft is composed of a plurality of divided shafts 321-324. Since torsional force is not applied on the control shaft at a time of lift of each cylinder by dividing the control shaft in such a manner, diameter of each divided control shaft 321-324 can be reduced and cost can be reduced.

Inventors:

KOSHIMIZU TAKAHIDE
YOSHIHARA YUJI
YUASA TAKAO
HIOKA HIDEKAZU
MIYASATO YOSHIAKI
YAMAMOTO MASAYUKI
HAMAMURA YOSHIHIKO
YAMAGUCHI KOKI
YOSHIOKA KEN

Application Number:

JP2006026943A

Publication Date:

August 16, 2007

Filing Date:

February 03, 2006

Export Citation:

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Assignee:

TOYOTA MOTOR CORP
OTICS CORP

International Classes:

F01L13/00

Attorney, Agent or Firm:

Yoshiro Kurauchi
Kunitomi Go

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