Fuel supply device for motor vehicle, has line connected with pump unit, where pump unit is connected with aerating and/or ventilating pipe and is suckable using accumulated fuel volume from aerating and/or ventilating pipe

摘要

The device (10) has an aerating and/or ventilating unit (14) connected with an aerating and/or ventilating pipe (26) for pressure compensation of a fuel tank (12) with the surroundings. A line (44) connected with a pump unit is provided, where the pump unit is connected with the aerating and/or ventilating pipe and is suckable using the accumulated fuel volume from the aerating and/or ventilating pipe. The pump unit is activated by a fuel conveying module (38). The pump unit is operated by the fuel feed, the fuel return and/or a partial flow of the fuel return.