| 摘要 |
PURPOSE:To eliminate errors in fuel injection amount and improve accuracy in air fuel ratio control by obtaining a difference between actual injection flow from an injector and desired injection flow and correcting errors in flow from the average value of the differences to correct 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 letter are omitted) for respective cylinders, and fuel is delivered and supplied to the respective injectors 22 through delivery pipes 34. These injectors 22 are controlled by ECU 40 according to the running condition of the engine. In said engine 10 is provided a fuel flow meter 54 for detecting injected fuel flow from each injector 22. And a difference (flow error) between detected fuel flow and desired fuel flow is detected by ECU 40, while this flow error is learned to calculate a correction value for correcting the flow error from the average value of flow errors and the injected fuel flow is corrected on the basis of the corresponding correction value.
|
