Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Reexamination Certificate
2005-06-28
2005-06-28
Kwon, John T. (Department: 3747)
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
C123S299000
Reexamination Certificate
active
06910449
ABSTRACT:
An internal combustion engine that can be operated in compression ignition mode, comprising a fuel injector (2) for each cylinder; a fuel injection control unit (4) for controlling fuel injection quantity and a piston (5) in each cylinder whose compression action causes a mixture of air and fuel to be ignited. The engine is further provided with inlet and outlet valves (6, 7) and sensors (12-16) for measuring various engine operating parameters, is disclosed. During compression ignition mode, the control unit controls the fuel injector to perform a first fuel injection before, and a second fuel injection after top dead center of the piston stroke during or after a negative valve overlap period. A method for operating the engine and a computer readable storage device (4) having stored therein data representing instructions executable by a computer to implement a compression ignition for an internal combustion engine is also described.
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Koopmans Lucien
Strom Hans
Alleman Hall McCoy Russell & Tuttle LLP
Ford Global Technologies LLC
Kwon John T.
Lippa Allan J.
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