| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel supply device capable of accurately detecting that a fuel cut-off valve is put in a closed condition during fuel supply, and of surely returning the fuel cut-off valve to an open condition if the closed condition is detected. SOLUTION: In an engine system including a fuel tank 20 storing fuel, a fuel pump 21 supplying fuel in the fuel tank 20 to the engine 10 via a fuel delivery pipe 22 and a delivery pipe 23, pressure regulators 26, 27 provided in a return piping 25 returning surplus fuel to the fuel tank 20, a tank cut-off valve 30 provided in a fuel piping, a delivery cut-off valve 31, and a fuel pressure change over valve 32 provided in the return piping 25 (bypass piping 25a), ECU 50 executes detects open conditions of the tank cut-off valve 30, the delivery cut-off valve 31 and the fuel pressure change over valve 32 based on fuel pressure difference between an inside of the fuel tank 20 and an inside of the delivery pipe 23, and executes open control when a close condition is detected. COPYRIGHT: (C)2007,JPO&INPIT
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