| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel injection control device capable of determining whether control is regular or irregular based on detection signal of a fuel pressure sensor even if characteristic slippage of a fuel pressure sensor occurs due to irregular wiring or the like. <P>SOLUTION: In the fuel injection control device pressurizing and pumping high pressure fuel to an accumulator 2, used for a fuel injection device distributing high pressure fuel accumulated in the accumulator to fuel injection valves 3 mounted on each cylinder of an internal combustion engine, operating quantities of fuel flowing in and flowing out of th accumulator, and monitoring fuel pressure in the accumulator by a pressure sensor 35 attached on the accumulator, a determination means determining whether there is slippage between a detection value Pcob1 of the pressure sensor 35 and a corresponding value estimated based on data Qpf applied to operation of quantities of fuel flowing in and out, and a storage part storing the corresponding value Pcf2 based on data Qpf applied to flow in and out quantity operation and the detection value Pcob1 of the pressure sensor and capable of reading the values out after an event are provided. <P>COPYRIGHT: (C)2007,JPO&INPIT |
