FUEL LINE OF INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a fuel line of an internal combustion engine capable of preventing a pressure in a fuel return pipe from excessively rising even if the fuel return pipe to return a fuel from a fuel injection system to a fuel tank is blocked by foreign matters.

SOLUTION: A high-pressure pipe 105 for force-feeding the fuel in the fuel tank 101 to a delivery pipe 106 and a return pipe 172 for returning the fuel from the delivery pipe 106 to the fuel tank 101 are connected to each other through a bypass pipe 181. A one-way valve 182 is installed in the bypass pipe 181. Even if the return pipe 172 is clogged with foreign matters and blocked, the excessive rising of the pressure in the return pipe 172 can be avoided by releasing the one-way valve 182.

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