Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Patent
1995-03-28
1997-08-26
Lo, Weilun
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
123 9041, 123 9046, 123198F, F01L 1300, F02D 1306
Patent
active
056601530
ABSTRACT:
A valve control system for an internal combustion engine, which is particularly adapted for selectively actuating and deactuating an engine valve. The system includes an inner rocker arm which contacts the cam and an outer rocker arm which engages the valve, the inner and outer arms being in nesting relation to one another and in pivotal contact with the output plunger of a stationary lash adjuster. A sliding latch member is movable between an active position wherein the inner and outer arms are effectively latched together to transmit the force of the cam through the inner and outer arms to the valve, and an inactive position wherein the inner and outer arms are free to move relative to one another. A spring acting between the inner and outer arms biases the inner arm into engagement with the cam and the outer arm, and the outer arm into engagement with the valve and the lash adjuster. Positive stops between the inner and outer arms are effective to limit lash adjuster leak down.
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Hampton Keith
Nielsen Douglas J.
Preston David M.
Stretch Dale A.
Tack Neal L.
Eaton Corporation
Kasper L. J.
Lo Weilun
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