Internal-combustion engines – Poppet valve operating mechanism – Electrical system
Reexamination Certificate
2005-12-23
2008-10-28
Chang, Ching (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Electrical system
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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Afjeh Homa
Brock Gregory D.
Leman Scott A.
Shinogle Ronald D.
Caterpillar Inc.
Chang Ching
Finnegan Henderson Farabow Garrett & Dunner
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