| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce an error in the amount of fuel injected by a fuel injection valve due to a change in fuel pressure from an injection time calculation period of the fuel injection valve to injection timing, in an engine in which fuel is pressurized by a high-pressure pump and the pressurized fuel is supplied to the fuel injection valve. <P>SOLUTION: In this control device, when calculating the injection time of the fuel injection valve 27 of each cylinder, discharge of the high-pressure pump 13 from the injection time calculation period of the current injection time calculation cylinder to the injection timing is calculated by a high-pressure pump model, the amount of fuel injected of the fuel injection valve 27 of the other cylinder in which fuel injection is performed from the injection time calculation period of the current fuel injection time calculation cylinder to the injection timing is calculated by a fuel injection valve model, fuel pressure in a delivery pipe 26 at the injection timing of the current injection time calculation cylinder is predicted using a high-pressure system model based on the discharge of the high-pressure pump 13 and the amount of fuel injected of the fuel injection valve 27, and the injection time of the fuel injection valve 27 of the current injection time calculation cylinder is calculated based on the predicted fuel pressure and the required amount of fuel injected. <P>COPYRIGHT: (C)2009,JPO&INPIT |
