Variable valve timing structure for outboard motor engine

Details Variable valve timing structure for outboard motor engine Variable valve timing structure for outboard motor engine

2005-06-28

2005-06-28

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C074S56800M

Reexamination Certificate

active

06910450

ABSTRACT:
An internal combustion engine for an outboard motor that comprises at least one combustion chamber formed by at least a engine body, a cylinder head assembly and a piston that moves relative to the engine body and the cylinder head assembly. A crankshaft extends in a generally vertical direction and is coupled to the piston such that movement of the piston causes the crankshaft to rotate. A camshaft is journaled for rotation and extends generally parallel to the crankshaft. The camshaft includes at least one cam configured to open and close a valve. A control valve for a variable valve timing mechanism is positioned within a common hydraulic passage having a first opening and a second opening. The control valve is positioned generally along an axis that is perpendicular to the camshaft.

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Co-pending patent application, filed May 31, 2001, entitled Four-Cycle Engine for Marine Drive, in the name of Goichi Katayama, and assigned to Sanshin Kogyo Kabushiki Kaisha.

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