Internal-combustion engines – Poppet valve operating mechanism – Electrical system
Reexamination Certificate
2005-12-27
2005-12-27
Denion, Thomas (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Electrical system
C123S090240, C123S090150, C251S129070, C251S129090, C251S129150, C251S129160, C251S129180, C335S268000, C361S189000, C361S301100, C361S328000, C323S259000, C323S344000
Reexamination Certificate
active
06978745
ABSTRACT:
A system for electronically actuating valves in an engine. The system includes first and second voltage sources, and a plurality of valve actuator subsystems coupled therebetween. Each valve actuator subsystem has a valve actuator and a switch configured to selectively control application of voltage to the valve actuator to thereby selectively control energization of the valve actuator. The system also includes a dissipation switch operatively coupled with the valve actuator subsystems, the dissipation switch being selectively operable to control dissipation of energy from any of the valve actuators.
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Alleman Hall McCoy Russell & Tuttle LLP
Ford Global Technologies LLC
Lippa Allan J.
Riddle Kyle M.
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