Spill resistant fuel cap and ventilation system

摘要

A spill resistant fuel cap and ventilation system to prevent fuel from spilling during the boat refueling process and when internal fuel system pressure increases, and for maintaining the internal pressure of the fuel system at a predetermined level, wherein the system comprises a fuel fill neck fluidly connected to a tank, the fuel fill neck having two venting apertures defined by it with one venting aperture in fluid communication with the tank and the other aperture in fluid communication with an air intake vent, such that the system provides two vapor and air venting paths for removing vapor and air during refueling and for relieving pressure, respectively, and such that an air intake venting path is formed for inducing air into the system through the fuel fill neck to prevent pulling vacuum in the tank during boat engine operation.