Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2007-10-30
2007-10-30
Miller, Carl S. (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C123S456000, C701S104000
Reexamination Certificate
active
11478662
ABSTRACT:
A fuel control method and system is provided for delivering fuel to an engine that employs an engine controller that is configured to the fuel injection quantity delivered to the engine. The engine controller is configured to: calculate a fuel injection quantity based on at least one operating condition of an engine; calculate an estimated fuel pressure value of the high pressure fuel that will be acting on a fuel injection valve when the prescribed fuel injection timing is reached at a prescribed calculation time occurring before the prescribed fuel injection timing; correct the fuel injection quantity that was previously calculated to a corrected fuel injection quantity based on the estimated fuel pressure value that will exist at the prescribed fuel injection timing; and open the fuel injection valve at the prescribed fuel injection timing to discharge a quantity of fuel equal to the corrected fuel injection quantity.
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Nakazawa Takashi
Okamura Manabu
Miller Carl S.
Nissan Motor Co,. Ltd.
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