초록 ▼

A device for ventilating a motor vehicle fuel tank comprises a chamber (24) communicating with the tank and, through a top outlet (30), with a discharge duct (28). The device further comprises, inside the chamber (24), a float (32) controlling a needle valve (40) for closing the top outlet (30) when

A device for ventilating a motor vehicle fuel tank comprises a chamber (24) communicating with the tank and, through a top outlet (30), with a discharge duct (28). The device further comprises, inside the chamber (24), a float (32) controlling a needle valve (40) for closing the top outlet (30) when the fuel level exceeds a predetermined threshold in the chamber (24). The device also comprises, between the tank and the float (32), flow restricting elements (66,68) for limiting the fuel displacement speed before it comes into contact with the float (32).

대표청구항 ▼

1. A venting system for an automobile vehicle fuel tank, comprising:a chamber which communicates with the tank and, via an outlet orifice, with a vent pipe; a float inside the chamber; a needle valve controlled by the float for closing the outlet orifice if a fuel level in the chamber exceeds a pred

1. A venting system for an automobile vehicle fuel tank, comprising:a chamber which communicates with the tank and, via an outlet orifice, with a vent pipe; a float inside the chamber; a needle valve controlled by the float for closing the outlet orifice if a fuel level in the chamber exceeds a predetermined threshold; and a flow restricting assembly positioned between the tank and the float, and under the float, for restricting a flow of fuel coming from the tank into the chamber to contact the float, the flow restricting assembly including a plurality of orifices offset in a direction of the fuel flow and adapted to form chicanes; wherein the flow restricting assembly includes at least one filter element fixed stationary with respect to the chamber.