Variable valve operating apparatus for internal combustion...

Details Variable valve operating apparatus for internal combustion... Variable valve operating apparatus for internal combustion...

2007-12-11

2007-12-11

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C123S090170, C123S090310

Reexamination Certificate

active

11248150

ABSTRACT:
A variable valve operating apparatus including a drive cam, a rocker cam pivotally supported on a first pivot, a lift varying mechanism operative to change a pivotal position of the rocker cam to vary a valve lift of an engine valve, a swing arm including one end portion at which the swing arm is pivotally supported on a second pivot and the other end portion contacted with the engine valve, a hollow space defined between the end portions of the swing arm, and a driven roller rotatably disposed within the hollow space of the swing arm and contacted with a cam surface of the rocker cam. When the valve lift of the engine valve is a predetermined lift amount or more, a contact point between the driven roller and the rocker cam is located in the hollow space of the swing arm.

REFERENCES:
patent: 6311659 (2001-11-01), Pierik
patent: 6378474 (2002-04-01), Pierik
patent: 6382151 (2002-05-01), Pierik
patent: 2004/0231625 (2004-11-01), Sugiura et al.
patent: 2002-371816 (2002-12-01), None

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