Fuel tank venting system

• Main Authors: OP DE BEECK Joel, Laurent DUEZ, HILL David, VAN SCHAFTINGEN Jules-Joseph
• Format: Patent
• Language: English
• Published: 09.01.2023
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

The invention relates to a fuel tank venting system (10) for an automotive vehicle comprising: - a fuel tank (1) comprising a vapor dome, - a refueling pipe (2), - a fuel vapor trap (3) that is connected to the fuel tank (1) by an inlet conduit (4), wherein the inlet conduit (4) is connected with the fuel tank (1) through at least one orifice (5) which is permanently open, the orifice being arranged in the vapor dome of the fuel tank (1) in a static condition and - a normally closed shutter device (CVS) (6) that communicates with the atmosphere and that is connected to the fuel vapor trap (3) by an outlet conduit (7), the normally closed shutter device (6) comprising an electrically-actuated valve being closed when the electrically-actuated valve is de-energized, wherein the normally closed shutter device (6) is configured to be open during vehicle refueling process and to be closed when the fuel in the fuel tank (1) reaches a predetermined fill level and when the vehicle is in normal operation.