| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel injection device accurately controlling an actual fuel injection amount of a rear-stage fuel injection with respect to a target fuel injection amount, in the control of multiple stage injection of a fuel injection valve. Ž<P>SOLUTION: When two-stage injection of pilot fuel injection and main fuel injection is performed in an individual injection control part 812 of a multiple stage injection control part 810, an ECU 80A sets a target injection amount Fsol by dividing into a target injection amount F<SB>Psol</SB>of the pilot fuel injection and a target injection amount F<SB>Msol</SB>of the main fuel injection. At this time, fuel Q<SB>Psum</SB>passing through an orifice in the pilot fuel injection is calculated by an actual fuel supply information detection part 813 based on a signal from a differential pressure sensor S<SB>dP</SB>disposed to a high-pressure fuel supply passage, and an actual injection amount Q<SB>iPsum</SB>of the pilot fuel injection is acquired in an actual fuel injection information detection part 814. The individual injection control part 812 corrects the target injection amount F<SB>M</SB>sol of the main fuel injection by acquiring a difference between the actual injection amount Q<SB>iPsum</SB>and the target injection amount F<SB>P</SB>sol. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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