| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel injection device and system, controlling an injection state of a fuel injection valve in details with high accuracy. <P>SOLUTION: This fuel injection device has: an injector 20 (fuel injection valve); a pressure sensor 20a located closer to a nozzle hole than a common rail (pressure accumulation vessel) and detecting fuel pressure; and an IC memory 26 (a storage means) storing individual difference information indicating an injection characteristic of the fuel injection valve obtained by an examination. Regarding a master fuel injection valve and a master sensor different from the injector 20 and pressure sensor 20a as examined objects, when a fluctuation mode in the detected pressure of the master sensor, appearing after output of an injection instruction signal, is regarded as a known reference fluctuation mode, the individual difference information stored in the IC memory 26 is regarded as the amount of an error between the reference fluctuation mode and the fluctuation mode obtained by the examination of the fuel injection valve 20 and pressure sensor 20a as the examined objects. <P>COPYRIGHT: (C)2010,JPO&INPIT |
