Variable valve actuating device

Details Variable valve actuating device Variable valve actuating device

2005-11-29

2005-11-29

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Rocker

C123S090390, C123S090160, C123S090200

Reexamination Certificate

active

06968819

ABSTRACT:
To allow both the valve lift and valve timing for an engine valve to be varied in a continuous manner, the variable valve actuating device (1) comprises a camshaft (8) rotatably supported by a fixed part of the engine and provided with a cam (7), a first rocker arm (9) pivotally supported by a fixed part of the engine, the first rocker arm being provided with a first point (12) engaging a stem of an engine valve (6), a drum (11) rotatably supported by a fixed part of the engine and at least partly surrounding the cam, a second rocker arm (10) having a first point (20) pivotally supported by the drum, a second point (21) adapted to engage the cam and a surface engaged by a second point (22) of the first rocker arm, and a control member (25, 26) for selectively turning the drum over a prescribed angular range.

REFERENCES:
patent: 3626469 (1971-12-01), Ashley
patent: 6854434 (2005-02-01), Methley
patent: 6874456 (2005-04-01), Yamada et al.
patent: 2002-364317 (2002-12-01), None
patent: 2003-3811 (2003-01-01), None

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