| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel system capable of identifying an abnormal fuel pump based on a change in the operation condition of an internal combustion engine. SOLUTION: This fuel system 2 supplies fuel to the internal combustion engine 1 by merging the fuel delivered from a plurality of fuel pumps 3, 4 and controls the operating conditions of the plurality of fuel pumps 3, 4 according to the operation condition of the internal combustion engine 1 so that an amount of fuel required for the internal combustion engine 1 is supplied. When abnormal fuel supply is detected, the fuel pump 4 (or 3) to be operated is selected from the plurality of fuel pumps 3, 4 and the operating condition thereof is changed. The abnormal fuel pump is identified based on a relation between selection of the pump to be operated and the change in the operation condition of the internal combustion engine 1 accompanied by a change in the operating condition of the pump to be operated. COPYRIGHT: (C)2008,JPO&INPIT
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