Valve-stroke controls

Details Valve-stroke controls Valve-stroke controls

2004-04-29

2008-12-23

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090390, C123S090440, C074S569000

Reexamination Certificate

active

07467609

ABSTRACT:
A valve-stroke control apparatus continuously varies the stroke of a valve in an engine, and selectively maintains it in a closed position, while the-engine is in operation. The control apparatus includes a force-transmitting rod which is pivoted by a cam and a cam-contact roller. An additional roller on one end of said force-transmitting rod engages a transverse contact surface of a stroke-length setting lever. The contact surface has a contour such that pivoting of the force-transmitting rod causes movement between the contact surface and the additional roller, which in turn displaces the force-transmitting rod longitudinally in a direction associated with valve opening. Such displacement is introduced by way of a rotary articulation into a rocking lever that activates the valve.

REFERENCES:
patent: 6439177 (2002-08-01), Pierik
patent: 6886512 (2005-05-01), Naumann
patent: 6973904 (2005-12-01), Naumann
patent: 7111600 (2006-09-01), Naumann
patent: 10100173 (2002-07-01), None
patent: 1072762 (2001-01-01), None

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