| 摘要 |
PURPOSE: To facilitate control of the injection amount also in a state where the injection amount and the time are not in the proportional relationship by adjusting fuel pressure higher than the atmospheric pressure, estimating pressure near an injector nozzle through a process of storing and detecting the intake air quantities in the specified state, and by correcting and controlling the target fuel injection amount as well as calculating the correction factor. CONSTITUTION: A CPU reads the intake air quantity GA detected by an air flow meter 46, and converted into a digital signal by an A/D converter. The engine speed NE detected by a rotational number sensor 51 is read, so as to find GN=GA/NE. The air quantities GNMAX per unit rotation is calculated. The estimated intake pipe pressure near the nozzle hole of an injector 19 is calculated on the basis of the GN/GNMAX. The correction factor KFPC is calculated by referring to a map data. The final fuel injection time is calculated by multiplying the target fuel injection time by the correction factor KFPC, and a driving signal corresponding it is output to the injector 19. |
