| 摘要 |
<p>Fuel pumping apparatus having an impoundment container, disposed in a tank, in which impoundment container a pumping assembly is disposed that pumps fuel to the internal combustion engine. A jet pump is supplied with some of the fuel pumped by the pumping assembly and pumps fuel out of the tank into the impoundment container. Below the pumping assembly, near a bottom of the impoundment container, there is a suction chamber, from which the pumping assembly aspirates fuel. A connection of the suction chamber to the impoundment container is controlled by a float valve, disposed laterally next to the pumping assembly, and by means of this valve, when the impoundment container is full, the suction chamber communicates with the impoundment container; in this state, the pumping assembly aspirates fuel from the impoundment container. A connection of the suction chamber to the tank is controlled by a check valve, which is disposed on the bottom of the impoundment container and by which the suction chamber communicates with the tank when the impoundment container is empty; in this state, the pumping assembly aspirates fuel from the tank.</p> |
