Filler neck closure assembly

A capless filler neck closure assembly adapted for use with a filler neck associated with a vehicle fuel tank, the assembly comprising

• a nozzle-receiving housing that defines nozzle-receiving passageway sized to receive the tip of a fuel-dispensing pump nozzle therein during refueling of the vehicle fuel tank,
• an outer dust shield mounted to pivot relative to the nozzle-receiving housing from a normally closed position arranged to block dirt from entering the nozzle-receiving passageway of the nozzle-receiving housing to an opened position arranged to allow a fuel nozzle to enter the nozzle-receiving passageway of the nozzle-receiving housing,
• an inner closure door mounted to pivot relative to the nozzle-receiving housing from a normally closed position arranged to block fluid communication between the nozzle-receiving passageway and the filler neck when the capless filler neck closure assembly is coupled to the filler neck to an opened position arranged to allow fluid communication between the nozzle-receiving passageway and the filler neck when the capless filler neck closure assembly is coupled to the filler neck, and
• a vacuum latch movable from a normally locked configuration arranged to block opening of the inner closure door to an unlocked configuration arranged to allow opening of the inner closure door, the vacuum latch configured to move from the normally locked configuration to the unlocked configuration in response to insertion of a fuel nozzle into the nozzle-receiving passageway past the outer dust shield while still out of contact with the inner closure door,
• wherein the vacuum latch includes a connector portion fixed to the nozzle-receiving housing and an engagement portion that blocks movement of the closure door when the vacuum latch is in the normally locked configuration and the inner closure door is in the normally closed position, the inner closure door includes a closure flap configured to block fluid communication out of the nozzle-receiving passageway when the inner closure door is in the normally closed position and a catch configured to be engaged by the engagement portion of the vacuum latch when the vacuum latch is in the normally locked configuration and the inner closure door is in the closed position, and the engagement portion of the vacuum latch has a T-shape including a stem and arms extending in opposite directions from the stem and each arm is received in a corresponding pocket included in the catch of the inner closure door.

A hybrid vehicle configured to be powered by an internal combustion engine or a battery, the hybrid vehicle comprising

• a fuel tank,
• an internal combustion engine,
• a fuel vapor control system configured to allow for venting of pressurized fuel-laden vapor from fuel tank when pressure is developed in fuel tank and to capture hydrocarbons entrained in fuel-laden vapor during venting, the fuel vapor control system including a fuel tank isolation valve coupled to fuel tank and configured to be closed to isolate fuel tank such that pressure or vacuum may be developed in the fuel tank, and
• a capless filler neck closure assembly coupled to the fuel tank via a filler neck, the capless filler neck closure assembly including
• a nozzle-receiving housing that defines nozzle-receiving passageway sized to receive the tip of a fuel-dispensing pump nozzle therein during refueling of the vehicle fuel tank,
• an outer dust shield mounted to pivot relative to the nozzle-receiving housing from a normally closed position arranged to block dirt from entering the nozzle-receiving passageway of the nozzle-receiving housing to an opened position arranged to allow a fuel nozzle to enter the nozzle-receiving passageway of the nozzle-receiving housing,
• an inner closure door mounted to pivot relative to the nozzle-receiving housing from a normally closed position arranged to block fluid communication between the nozzle-receiving passageway and the filler neck when the capless filler neck closure assembly is coupled to the filler neck to an opened position arranged to allow fluid communication between the nozzle-receiving passageway and the filler neck when the capless filler neck closure assembly is coupled to the filler neck, and
• a vacuum latch movable from a normally locked configuration arranged to block opening of the inner closure door to an unlocked configuration arranged to allow opening of the inner closure door, the vacuum latch configured to move from the normally locked configuration to the unlocked configuration in response to insertion of a fuel nozzle into the nozzle-receiving passageway past the outer dust shield while still out of contact with the inner closure door.