EVAPORATED FUEL TREATMENT DEVICE

PROBLEM TO BE SOLVED: To provide an evaporated fuel treatment device capable of executing functional diagnosis of a sealing valve even in operating an internal combustion engine.SOLUTION: An evaporated fuel treatment device 11 includes: a sealing valve 41 for blocking a fuel tank 13 from atmospheric...

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Bibliographische Detailangaben
Hauptverfasser:	SHIHO MASATO, HORIBA AYUMI
Format:	Patent
Sprache:	eng
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:	PROBLEM TO BE SOLVED: To provide an evaporated fuel treatment device capable of executing functional diagnosis of a sealing valve even in operating an internal combustion engine.SOLUTION: An evaporated fuel treatment device 11 includes: a sealing valve 41 for blocking a fuel tank 13 from atmospheric air; a canister 15; a canister internal pressure sensor 55; a control portion 69 instructing opening or closing the sealing valve 41; and controlling purge; and a diagnosing portion 67 executing functional diagnosis of an evaporated fuel sealing system including the fuel tank 13, the canister 15, and the sealing valve 41. The diagnosing portion 67 diagnoses a function of the sealing valve 41 on the basis of whether a canister internal pressure detected by the canister internal pressure sensor 55, is changed over a prescribed range or not, in a state of opening the sealing valve 41 according to the instruction of the control portion 69 when an internal combustion engine is operated, and the purge is not executed.