| 摘要 |
PURPOSE:To eliminate dispersion of fuel injection amount in each cylinder and improve accuracy in air-fuel ratio control by obtaining a difference between the actual injection flow of an injector and a desired injection flow and correcting flow error from the learing value of this difference to correct the injected fuel flow. CONSTITUTION:An intake manifold 13 near the inlet side of an intake valve 20 of an engine 10 is provided with injectors 22A-22D (hereinafter suffix letters are omitted) for respective cylinders, and fuel is delivered and supplied to each injector 22 through a delivery pipe 34. The injector 22 is controlled by ECU40 according to the running condition of the engine. In said engine 10 is provided a fuel flow meter 54 for detecting fuel flow injected from each injector 22. And by ECU40 is detected a difference (flow error) between the detected fuel flow and a desired fuel flow while the flow error is learned to calculate a correction value for correcting the floe error in each cylinder and correct the injected fuel flow on the basis of the corresponding correction value.
|
