Vacuum bleed and flow restrictor fitting for fuel injected engines with vapor separator

Abstract From the Canadian patent

In a marine fuel system for a fuel injected internal combustion engine, a fitting is provided in the vapor supply line . The fitting has a first reduced diameter passage providing a vacuum bleed orifice passage partially venting vacuum from the induction manifold . to atmosphere, to limit peak vacuum applied to the vapor separator from the induction manifold . The fitting has a second reduced diameter passage providing a flow restrictor passage limiting the volume of flow of fuel vapor from the vapor separator to the induction manifold . The fitting limits fuel vapor supplied from the vapor separator to the induction manifold at peak vacuum from the induction manifold during rapid engine …