Fuel fill system with fuel vapor recirculation

B - Operations – Transporting – 60 – K

Patent

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Details

B60K 15/04 (2006.01) B65B 1/04 (2006.01) B65B 3/00 (2006.01) B65B 3/04 (2006.01) B65B 43/42 (2006.01) F02M 37/20 (2006.01) F15C 1/16 (2006.01) F16K 24/00 (2006.01)

Patent

CA 2553525

A fuel fill system includes a funnel (18, 70) having an inlet port (20) configured to receive a nozzle (22) from an external fuel source, a fuel filler tube (16) coupled to an outlet port (24) of the funnel (18, 70), and a vapor recirculation tube (30) coupled to the funnel. Fuel vapor entering the funnel (18, 70) from the vapor recirculation tube (30) is directed toward the outlet port (24) at a first angle less than 90~ from a longitudinal axis (34) of the funnel (18, 70). The fuel vapor entering the funnel (18, 70) may also be directed at a second angle less than 90~ from a line (50) tangent to an inner surface of the funnel (18, 70) at a point where fuel vapor enters the funnel. The second angle is in a plane perpendicular to the longitudinal axis (34) of the funnel (18, 70).

L'invention concerne un système de remplissage de carburant qui comprend un entonnoir (18, 70) possédant un port d'entrée (20) conçu pour recevoir un ajutage (22) en provenance d'une source de carburant extérieure, un tube de remplissage de carburant (16) couplé à un port de sortie (24) de l'entonnoir (18, 70), et un tube (30) de recirculation de vapeur couplé à l'entonnoir. La vapeur de carburant entrant dans l'entonnoir (18, 70) en provenance du tube (30) de recirculation de vapeur est dirigée vers le port de sortie (24) à un premier angle inférieur à 90° par rapport à un axe longitudinal (34) de l'entonnoir (18, 70). La vapeur de carburant entrant dans l'entonnoir (18, 70) peut également être dirigée à un deuxième angle inférieur à 90° par rapport à une ligne (50) tangente à la surface intérieure de l'entonnoir (18, 70) au niveau d'un point où la vapeur de carburant entre dans l'entonnoir. Le deuxième angle se situe dans un plan perpendiculaire à l'axe longitudinal (34) de l'entonnoir (18, 70).

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