Cylinder valve operating 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

06932035

ABSTRACT:
A poppet valve operating system for an internal combustion engine includes a finger follower which is driven by an intermediate rocker. The intermediate rocker selectively converts motion imparted by a drive cam into either a purely translational trajectory, or into a mixed translational and rotational trajectory, so as to open a poppet valve which is ultimately actuated by a finger follower interposed between the intermediate rocker and the valve.

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BMW Press Release:“BMW Four-Cylinder Petrol Engine with Valvetronic”; Author Unk.; Feb., 2001.

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