Variable valve mechanism

Details Variable valve mechanism Variable valve mechanism

2009-07-22

2011-11-08

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

Reexamination Certificate

active

08051817

ABSTRACT:
The present invention provides a variable valve mechanism which includes a camshaft having a drive cam, a rocker shaft provided parallel to the camshaft, and a variable mechanism that is provided on the rocker shaft and interposed between the drive cam and a valve, and that changes an opening/closing amount of the valve. The variable mechanism includes a main arm that engages with the drive cam, a cam arm that has a cam surface pressing the valve, a control cam that is provided on the rocker shaft, and has an outer peripheral surface whose distance from a shaft center of the rocker shaft varies gradually, and a displacement member whose distance from the shaft center is changed by turning of the control cam. A relative phase between the main arm and the cam arm is displaced as the distance between the displacement member and the shaft center changes.

REFERENCES:
patent: 6938596 (2005-09-01), Naumann
patent: 7311073 (2007-12-01), Kim et al.
patent: 7451729 (2008-11-01), Sugiura et al.
patent: 2001/0052329 (2001-12-01), Himsel
patent: 2004/0074457 (2004-04-01), Maas et al.
patent: 2005/0103292 (2005-05-01), Naumann
patent: 2007/0095311 (2007-05-01), Tateno et al.
patent: 2009/0151669 (2009-06-01), Kim et al.
patent: 1 710 402 (2006-10-01), None
patent: 1 873 362 (2008-01-01), None
patent: 11-324625 (1999-11-01), None
European Search Report dated Apr. 16, 2010.

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