Method for suctioning liquid fuel from a liquid trap in a fuel tank; and fuel system for a motor vehicle

摘要

A method for suctioning liquid fuel from a liquid trap in a fuel tank of a motor vehicle, includes generating a negative pressure in a gas compartment or headspace of the fuel tank, applying the negative pressure to the liquid trap through a suction line, wherein the liquid trap has a collection container collecting liquid fuel during venting of the fuel tank, and at least partially suctioning the liquid fuel located in the collection container through the suction line into the gas compartment or headspace.

主权项

1. A method for suctioning liquid fuel from a liquid trap in a fuel tank of a motor vehicle, comprising:
generating a negative pressure in a gas compartment or headspace of the fuel tank; applying the negative pressure to the liquid trap through a suction line, said liquid trap having a collection container collecting liquid fuel during venting of the fuel tank, said suction line branching into a plurality of parallel branch lines with smaller line cross sections before entering the collection container, said branch lines entering the collection container through a bottom of the collection container, wherein end sections of the branch lines extend in the collection container upwards and have lateral apertures for passage of liquid fuel therethrough into the branch lines; and at least partially suctioning the liquid fuel located in the collection container through the suction line into the gas compartment or headspace.