Fuel pump in tank for automotive vehicle

摘要

The electric motor pump (14) has a stand pipe (30) with its upper end (32) connected to a return fuel reservoir (28) and lower end (34) connected to the inlet (16) of the fuel pump. The pipe delivers fuel from the return fuel reservoir when the level of fuel in the reservoir rises above the upper end of the stand pipe. The return fuel reservoir has an inlet connected with a fuel return line through which excess fuel in the fuel system is delivered to the return fuel reservoir. This weathered return fuel is delivered to the fuel pump inlet through the stand pipe when the level of the fuel in the reservoir is sufficiently high to prefer use of the weathered return fuel by the fuel pump.