Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Reexamination Certificate
2007-02-20
2007-02-20
Gimie, Mahmoud (Department: 3747)
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
C123S090120, C123S090160
Reexamination Certificate
active
10933300
ABSTRACT:
A method of operating an internal combustion engine, including at least one cylinder and a piston slidable in the cylinder, may include supplying a mixture of pressurized air and recirculated exhaust gas from an intake manifold to an air intake port of a combustion chamber in the cylinder, selectively operating an air intake valve to open the air intake port to allow pressurized air to flow between the combustion chamber and the intake manifold substantially during a majority portion of a compression stroke of the piston, and operably controlling a fuel supply system to inject fuel into the combustion chamber after the intake valve is closed.
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patent:
Coleman Gerald N.
Duffy Kevin P.
Faulkner Stephen A.
Fluga Eric C.
Kilkenny Jonathan P.
Caterpillar Inc
Finnegan Henderson Farabow Garrett & Dunner
Gimie Mahmoud
LandOfFree
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