EVAPORATED FUEL PROCESSING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an evaporated fuel processing device capable of smoothly and surely performing oil supply work under the consideration of prevention of air pollution.SOLUTION: An evaporated fuel processing device 11 includes: a sealing valve 41 for blocking a fuel tank 13 from the atmosphere; a tank inner pressure sensor 39 for detecting a tank inner pressure related to the fuel tank 13; a fuel lid 25 covering a fuel filler 19b of the fuel tank 13; an oil supply intention information acquiring part for acquiring information related to the oil supply intention; a time change amount calculating part for calculating a time change amount Pdt related to the tank inner pressure; and a control part for instructing to open the sealing valve 41 when the oil supply intention information acquiring part acquires the information of the oil supply intention, and permitting opening of the fuel lid 25 when the time change amount related to the tank inner pressure converges to be lower than a predetermined threshold.