Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Shuji Nagano0
Toshihiko Oka0
Masanori Tokuhisa0
Date of Patent
April 15, 2008
0Patent Application Number
107358930
Date Filed
December 16, 2003
0Patent Primary Examiner
Patent abstract
There is provided a valve system for an internal combustion engine, in which a rocker shaft required to have a higher stiffness has a larger diameter. A rocker shaft on an intake side is formed to have a larger diameter than that of a rocker shaft on an exhaust side, and therefore, it is possible to ensure such stiffness as to compensate for an excess in weight and to improve valve operating characteristics of a valve system.
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