| 摘要 |
<p>PROBLEM TO BE SOLVED: To use a circulating type carburetor without hindrance without blocking up a return pipe in a fuel tank even if it is put in a full tank condition by upward projecting a connecting part of the return pipe by isolating it from a fuel filler hole arranged so as to project to an upper part, and forming its inside as an air reservoir. SOLUTION: In a fuel tank 7, a connecting part 19 of a return pipe 15 is projected upward by isolating it from a fuel filler hole 18 arranged so as to project to an upper part, and its inside is formed as an air reservoir 20. Then, fuel is injected into the fuel tank 7 from the fuel filler hole 18, and even when it is put in the so-called full tank condition, the fuel is not filled in the air reservoir 20. Therefore, even when vibration or the like is applied at the so- called full tank time of the fuel tank 7, since the air reservoir 20 is secured, the fuel does not block up the return pipe 15. As a result, trouble such as overflow fuel is blown off from an air vent part or the like can be prevented.</p> |
