| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an accumulator fuel injection device appropriately determining abnormality detection of a fuel pressure detection means irrespective of the presence of fuel leak from a fuel injection valve. <P>SOLUTION: When a change of fuel pressure detected by a fuel pressure sensor 7 is small (S160-190), temporary determination that a fuel pressure sensor 7 is abnormal is given (S200) at first. Transfer quantity from a high pressure fuel supply pump 4 is increased (S210, 220), a pressure reducing valve 8 is driven to reduce pressure (S230, 240), and change in the fuel pressure of a common rail 2 is increased after temporary determination of abnormality. After that, regular determination that the fuel pressure sensor 7 is abnormal is given (S280) when a change in fuel pressure detected by the fuel pressure sensor 7 is small (S250-270). <P>COPYRIGHT: (C)2010,JPO&INPIT |
