| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method of determining abnormality of a fuel injection device, which can accurately control an injection state in detail. <P>SOLUTION: The method of determining abnormality of the fuel injection device including an injector (a fuel injection valve), and a pressure sensor arranged on a side close to an injection hole relative to a common rail (a pressure accumulation vessel) includes: a measuring process (M20) for measuring a fluctuation mode of the pressure detected by a pressure sensor, which appears after an injection command signal is output, by a test; and an abnormality determining process (M21) for determining abnormality when a displacement amount between the fluctuation mode measured in the measuring process (M20) and a reference fluctuation mode as a reference is larger than a preset threshold value. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
