| 摘要 |
In a fuel injection system, a fuel tank is disposed below an electronically controlled fuel injection apparatus. A fuel reservoir chamber for supplying fuel from the fuel tank is disposed above the electronically controlled fuel injection apparatus, and the fuel stored in the fuel reservoir chamber is supplied to the electronically controlled fuel injection apparatus via a fuel supply passage. The fuel reservoir chamber and the fuel tank are connected by a first fuel return passage through which vapor is ejected and fuel in the fuel reservoir chamber overflows. A second fuel return passage for returning surplus fuel from the electronically controlled fuel injection apparatus is connected to either of the fuel reservoir chamber and the first fuel return passage at the position above the connecting position at which the fuel reservoir chamber connects with the first fuel return passage.
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