Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2006-09-19
2006-09-19
Gimie, Mahmoud (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C123S446000
Reexamination Certificate
active
07107968
ABSTRACT:
An engine ECU performs a program including the steps of calculating an amount of the fuel required to be discharged from high-pressure fuel pumps (the required discharge amount), determining whether one high-pressure fuel pump can be stopped, and if not, determining whether the required discharge amount exceeds a maximum possible discharge amount of one high-pressure fuel pump of smaller capability, and if not, causing the two high-pressure fuel pumps to discharge the fuel in approximately equal amount, or if so, causing the high-pressure fuel pump of smaller capability to discharge the fuel of the maximum possible discharge amount and causing the high-pressure fuel pump of larger capability to discharge the fuel of the amount obtained by subtracting the discharge amount of the high-pressure fuel pump of smaller capability from the required discharge amount.
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Gimie Mahmoud
Oliff & Berridg,e PLC
Toyota Jidosha & Kabushiki Kaisha
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