Engine valve actuation system

Internal-combustion engines – Poppet valve operating mechanism – Electrical system

Reexamination Certificate

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Details

C123S090390, C251S129010

Reexamination Certificate

active

07441519

ABSTRACT:
An engine valve actuation system may include an intake valve moveable between a first position that blocks a flow of fluid and a second position that allows a flow of fluid. The system may also include a cam assembly configured to move the intake valve between the first position and the second position. An electromagnetic actuator may be configured to selectively modify a timing of the intake valve in moving from the second position to the first position.

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