| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel supply control device for an internal combustion engine capable of appropriately grasping dynamic operation properties of a fuel injection device and always executing accurate fuel injection quantity correction. SOLUTION: Demand fuel injection quantity mfdmd is calculated according to engine rotation speed NE and demand torque TRQ, and fuel injection command value mfcmd is calculated according to the demand fuel injection quantity mfdmd. Estimated combustion fuel quantity mfest which is an estimated value of quantity of fuel actually burning is calculated according to detected intake air flow rate MA and air fuel ratio AFR. A parameter identification part 44 calculates correlation parameters "a" and b expressing a relation between the fuel injection quantity command value mfcmd and the estimated combustion fuel quantity mfest. A fuel injection quantity command value calculation part 42 calculates the fuel injection quantity command value mfcmd by correcting the demand fuel injection quantity mfdmd with using the correlation parameters "a" and b from a point when the correlation parameters "a" and b converge. COPYRIGHT: (C)2007,JPO&INPIT
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