Cam shaft assembly for an engine

Details Cam shaft assembly for an engine Cam shaft assembly for an engine

2007-06-26

2007-06-26

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Cam

C123S090270, C123S090370, C029S888100, C074S567000

Reexamination Certificate

active

11191834

ABSTRACT:
An internal combustion engine including an engine housing having a cam chamber and an aperture providing access to the cam chamber. The engine also includes an insert at least partially made from plastic received within the aperture, a crankshaft coupled to the engine housing for rotation about a crank axis, and a cam shaft defining a cam shaft axis and at least partially made from plastic that is rotatably driven by the crankshaft. The cam shaft includes first and second ends and at least one cam lobe positioned between the ends. The first end is rotatably supported by the engine housing and the second end is rotatably supported by the insert. The engine also includes a metal portion coupled to either the insert or the cam shaft. The metal portion defines a flange having a face in contact with an adjacent surface of the other of the insert and the cam shaft.

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