| 摘要 |
PROBLEM TO BE SOLVED: To provide an abnormality determination device for a fuel injection device correctly determining abnormality of the fuel injection device and determining a cause of the abnormality of the fuel injection device. SOLUTION: This device includes a reference pressure change setting means presetting a first order differential value of change of fuel pressure caused by fuel injection as a reference value, and an abnormality determination means determining abnormality of the fuel injection means based on slippage quantity of the first order differential value of change of fuel pressure detected by the fuel pressure detection means from a threshold which is the reference value set by the reference pressure change set means. COPYRIGHT: (C)2010,JPO&INPIT
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