CAPLESS FUEL SYSTEM

摘要

A capless fuel system having an elongated tubular and cylindrical housing open at each end and in which the housing defines a first and a second longitudinally spaced fluid ports. A first flapper valve is associated with the first fluid port and a second flapper valve is associated with the second fluid port. A pair of diametrically opposed latches pivotally mounted to the housing adjacent the second fluid port retain the second flapper valve in a closed position until a fuel nozzle of a predetermined size is inserted towards the second port. The fuel nozzle engages camless surfaces which pivot the latches away from the second flapper valve allowing the fuel filling nozzle to pass through the second port.

主权项

1. A capless fuel apparatus comprising:
an elongated tubular and cylindrical housing open at each end, said housing defining a first and a second longitudinally spaced fluid ports, a first flapper valve associated with said first fluid port and a second flapper valve associated with said second fluid port, said flapper valves being movable between an open and a closed position and resiliently urged toward their respective closed positions, a pair of diametrically opposed latches pivotally mounted to said housing adjacent said second fluid port and pivotal about an axis perpendicular to an axis of said housing between a latch position and a release position, said latches engaging said second flapper valve when at least one of said latches is in said latch position and said second flapper valve in in said closed position to thereby prevent said second flapper valve moving to said open position, each latch having a cam surface which, when engaged, pivots said latch to said open position, wherein only a fuel nozzle of a predetermined size will engage both cam surfaces of both latches.