Variable valve timing system for an internal combustion engine

Details Variable valve timing system for an internal combustion engine Variable valve timing system for an internal combustion engine

2006-05-16

2006-05-16

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Rocker

C123S090120, C123S090110

Reexamination Certificate

active

07044093

ABSTRACT:
An internal combustion engine and method of operating the engine is provided. The engine comprises an engine block defining an engine cylinder, a piston reciprocatingly positioned in the engine cylinder, a head connected with the engine block, the head defining an inlet port and an exhaust port, an intake valve positioned in the inlet port, the intake valve configured to restrict flow through the intake port to the cylinder, an exhaust valve positioned in the exhaust port, the exhaust valve configured to restrict flow through the exhaust port to the cylinder, a cam connected with the intake valve to open the intake valve, and an engine valve actuator connected with the intake valve. The engine valve actuator is configured to hold either or both the intake valve and or exhaust valve open after the cam opens one or both of the valves.

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