Fuel tank venting system for reduced fuel permeation

The present invention involves a venting system 12 for venting a gaseous fluid from a tank 10 having an aperture 30 and a fuel delivery module cover 36. The tank is made of a predetermined material. The venting system comprises a venting valve 48 for venting gaseous hydrocarbon fluid at a predetermi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ROBERT J GINNARD, DAVEN C BHAVSAR, RICHARD ALLEN KNAGGS
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR ACTUATING-FLOATS AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES BLASTING COCKS CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HANDLING THIN OR FILAMENTARY MATERIAL HEATING INSTRUMENTATION OR DASHBOARDS FOR VEHICLES LIGHTING MECHANICAL ENGINEERING PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STORING TAPS THERMAL INSULATION IN GENERAL TRANSPORTING VALVES VEHICLES IN GENERAL WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The present invention involves a venting system 12 for venting a gaseous fluid from a tank 10 having an aperture 30 and a fuel delivery module cover 36. The tank is made of a predetermined material. The venting system comprises a venting valve 48 for venting gaseous hydrocarbon fluid at a predetermined pressure from the tank. The valve is disposed through the aperture to define a circumferential space 81 between the inner side 43 of the outer lip 27 and the venting valve. The system further includes a cover 36 comprising the predetermined material and attached to the outer layer to seal the valve between the cover and the outer layer. The system further includes a retention member 53 disposed about the venting valve and attached to the outer layer about the outer side of the outer lip defining an expansion boundary so that the outer lip only expands toward the venting valve to seal the circumferential space when the tank absorbs hydrocarbons.