Valve system for internal combustion engine

Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing

Reexamination Certificate

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C123S090150, C123S090390

Reexamination Certificate

active

07357107

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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Böge, Alfred; Mechanik und Festigkeitslehre; 17, überabeitete Auflage; Braunschweig (u.a.); Friedrich Vieweg & Sohn, 1979; Seiten 259, 281, 302, und 303.

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