| 摘要 |
PURPOSE:To aim at simplification in a device in structure as well as the promotion of its inexpensiveness, by delivering fuel in a main chamber to a fuel feeder by means of drive of a feed pump, while smoothly transferring the fuel in a sub-chamber smoothly to the main chamber side by ejector action, and thereby dispensing with any exclusive electrical parts. CONSTITUTION:When a feed pump 6 is driven, a part of fuel having entered in an impeller chamber by way of an interconnecting port 6a from an orifice 9 comes to priming, so that fuel in a main chamber 3 is fed to a fuel feeder from a feed pipe 19 via a filter 20, while a part of discharge fuel is delivered to a guide pipe 7 from the interconnecting port 6a. And, the fuel delivered to the guide pipe 7 is spouted toward a throttle part from a nozzle 11 at an ejector part 8 by dint of discharge pressure of the feed pump 6. In consequence, negative pressure (vacuum) is produced in a chamber 10, and with this negative pressure, the fuel in the sub-chamber 4 is drawn in the chamber 10 by way of an interconnecting pipe 14 and simultaneously transferred to the main chamber through an outflow pipe 12.
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