| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicular fuel supply device capable of suppressing pressure reduction in a fuel supply pipe when filling fuel. SOLUTION: Fuel is led to flow, by a branch pipe 34, from a fuel filler pipe 18 leading from a fuel filler opening 26 to a fuel tank 14, also into a fuel supply pipe 20 leading from the fuel tank 14 to an engine 40. The valve opening pressure of a first check valve 22 on the side of the fuel tank 14 from a branch point 32 is set lower than that of a second check valve 38 on the side of the fuel filler opening 26 from the branch point 32. When filling fuel, the first check valve 22 is also opened immediately after the second check valve 38 is opened. Since the first check valve 22 is opened when internal pressure inside of the fuel supply pipe 20 is increased to prevent fuel from being led to flow into the fuel tank 14, pressure reduction in the fuel supply pipe 20 when filling fuel is suppressed. COPYRIGHT: (C)2008,JPO&INPIT
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