To provide a fuel oil supply section structure for reliably preventing scatter of fuel droplets from a fuel oil supply opening of a filler pipe.
The fuel oil supply section structure includes a filler pipe 3, a restrictor 4, and a breather pipe 5. The gap between an outer circumferential face of the end 40 of the restrictor 4 and the inner circumferential face 6N of a nozzle insertion part 6 is not provided over the whole circumference. An air passage S is formed between the outer circumferential face 41A of a restrictor body 41 connected to the end 40 of the restrictor 4 and the inner circumferential face 6N of the nozzle insertion part 6. An exhaust port 5A of the breather pipe 5 faces the outer circumferential face 41S of the restrictor body 41, and a vent hole 10 penetrates the restrictor body 41. The vent hole 10 is displaced with respect to the exhaust port 5A in the circumferential direction of the filler pipe 3 so as not to face the exhaust port 5A, and an end edge 4K on the downstream of the restrictor body 41 is positioned on the downstream of the exhaust port 5A.
YOSHIKAWA AKIHIRO
HORAI TATSUYA