Fuel pump module with improved vapor vent manifold
AssigneesDENSO International America, Inc., Denso Corporation
InventorsPatrick Powell, Kingo Okada
Life of this patent
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Abstract
A fuel pump module with integrated vapor vent manifold for minimizing fuel vapor emission in a fuel venting system, comprising a modular flange having a plurality of vapor inlets on the bottom side for receiving fuel vapor from sources both proximal and distal to the flange within the fuel tank. The vapors collected from distal sources within the tank are carried to the manifold by means of internal vent lines thereby minimizing permeation emissions common of external vapor lines. Once received in the manifold, the vapors conglomerate and exit the top side of the flange through a single outlet, connected by a single vapor line to a remote canister for storage.
Claims5
A fuel pump module with integrated vapor manifold comprising:
- a modular flange for mounting to a fuel tank, the flange having a top side, a bottom side, and a longitudinal manifold for merging fuel vapor received from a plurality of sources within said tank for discharge from said manifold through a single vapor outlet on the top side of the modular flange, wherein
- at least one source within said tank comprises a primary vent valve attached directly to the bottom side of the manifold,
- at least one source within said tank comprises a remotely located vent valve attached to the manifold through a concealed internal tank vent line, and
- wherein fuel vapors collected from said remotely located vent valve merge with vapors collected from a secondary vent valve prior to entering the manifold, and wherein all the vapors enter the manifold from a bottom side of the longitudinal manifold, the longitudinal manifold residing above and parallel to a longitudinal axis of the fuel tank.
A fuel pump module with an integrated longitudinal vapor manifold comprising:
- a modular flange for mounting to a fuel tank, the flange having a top side, a bottom side, and a longitudinal manifold for merging fuel vapor received from a plurality of sources within said tank for discharge from said longitudinal manifold through a single vapor outlet on the top side of the modular flange, said single vapor outlet located at an end of the longitudinal manifold;
- at least one source within said tank comprising a primary vent valve attached directly to the bottom side of the longitudinal manifold;
- at least one source within said tank comprising a remotely located vent valve attached to the longitudinal manifold through a concealed, internal tank vent line that is located below a level of the longitudinal manifold and that delivers vapors to the longitudinal manifold from a bottom side of the longitudinal manifold.
Dependencies are inferred from the claim text.