Fuel vapor recovery canister
First Claim
1. A fuel vapor recovery canister comprising an elongated housing formed to include an inlet end, an exit end, and an interior region extending therebetween, a first carbon bed located in the interior region and positioned to lie in close proximity to the inlet end, and a second carbon bed located in the interior region and positioned to lie in close proximity to the exit end and in spaced-apart relation to the first carbon bed to form a fuel vapor/air mixing chamber interposed between the first and second carbon beds to mix fuel vapor admitted into the elongated housing through the inlet end and discharged from the first carbon bed with atmospheric air provided in the fuel vapor/air mixing chamber after admission into the elongated housing through the exit end and discharge from the second carbon bed to produce a flow of fuel vapor passing into and through the second carbon bed and flowing toward the exit end.
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Accused Products
Abstract
A vehicle fuel system includes a fuel vapor recovery canister containing a carbon bed configured to capture hydrocarbon material associated with fuel vapor discharged from the fuel tank into the canister. A purge vacuum is applied to the canister to draw fuel vapor carrying reclaimed hydrocarbon material from the canister into an intake manifold coupled to an engine so that the reclaimed hydrocarbon material can be burned in the engine.
29 Citations
35 Claims
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1. A fuel vapor recovery canister comprising
an elongated housing formed to include an inlet end, an exit end, and an interior region extending therebetween, a first carbon bed located in the interior region and positioned to lie in close proximity to the inlet end, and a second carbon bed located in the interior region and positioned to lie in close proximity to the exit end and in spaced-apart relation to the first carbon bed to form a fuel vapor/air mixing chamber interposed between the first and second carbon beds to mix fuel vapor admitted into the elongated housing through the inlet end and discharged from the first carbon bed with atmospheric air provided in the fuel vapor/air mixing chamber after admission into the elongated housing through the exit end and discharge from the second carbon bed to produce a flow of fuel vapor passing into and through the second carbon bed and flowing toward the exit end.
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16. A fuel vapor recovery canister comprising
an elongated housing formed to include an inlet end, an exit end, and an interior region extending therebetween, a first carbon bed including a first fixed granule retainer coupled to the elongated housing in a location near the inlet end, a first movable granule retainer mounted for movement relative to the first fixed granule retainer, and a first group of carbon granules located in a space provided between the first fixed and movable granule retainers, a second carbon bed including a second fixed granule retainer coupled to the elongated housing in a location near the exit end, a second movable granule retainer mounted for movement relative to the second fixed granule retainer, and a second group of carbon granules located in a space provided between the second fixed and movable granule retainers, and a retainer spreader arranged to urge the first movable granule retainer toward the first fixed granule retainer to compact the first group of carbon granules to assume a selected density and to urge the second movable granule retainer toward the second fixed granule retainer to compact the second group of carbon granules to assume the selected density.
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30. A fuel vapor recovery canister system comprising
an elongated housing formed to include an inlet end, an exit end, and an interior region extending therebetween, a first carbon bed located in the interior region and positioned to lie in close proximity to the inlet end, a second carbon bed located in the interior region and positioned to lie in spaced-apart relation to the first carbon bed and in close proximity to the exit end, and a fuel tank formed to include an interior fuel-storage region and an exterior canister-receiving cavity, the elongated housing being retained in the exterior canister-receiving cavity.
Specification