CONTROL SYSTEM OF FUEL VAPOR RECIRCULATION FOR CONTROLLING RECIRCULATION OF FUEL VAPOR TO FILLER TUBE FROM VAPOR DOME IN TANK, AND CONTROL METHOD OF FUEL VAPOR RECIRCULATION

PURPOSE: A control system of fuel vapor recirculation and a control method of fuel vapor recirculation are provided to maintain completeness of the system in preventing escape of fuel vapor to the air, to promote proper filling from a fuel supply nozzle, and to prevent quick operation of an automati...

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Bibliographische Detailangaben
Hauptverfasser:	ALLMAN, CRAIG HAROLD, BENJEY, ROBERT P
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	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 COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INSTRUMENTATION OR DASHBOARDS FOR VEHICLES LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF TRANSPORTING VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE: A control system of fuel vapor recirculation and a control method of fuel vapor recirculation are provided to maintain completeness of the system in preventing escape of fuel vapor to the air, to promote proper filling from a fuel supply nozzle, and to prevent quick operation of an automatic shutoff device arranged in the fuel supply nozzle. CONSTITUTION: A control system of fuel vapor recirculation comprises a filler tube(14) having a unit(18) for sealing up the periphery of a dispensing nozzle(20); a unit(34) constituting a vapor recirculation path to the filler tube from a tank(12) to the downstream position of the unit for sealing up the periphery of the dispensing nozzle; a vapor storage device(32) arranged to the outside of the tank and connected to receive fuel vapor from the tank; and a flow control valve(40) arranged in the vapor recirculation path. The flow control valve changes from first relatively low flow velocity to second substantially high flow velocity in response to predetermined differential pressure.