| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel tank for suppressing an emission of evaporation fuel into the atmosphere at the time of oiling with a simple structure. SOLUTION: Opening/closing of an oiling port 10 is detected by a switch 40 attached to a fuel lid 4. When the oiling port 10 is in an opening condition, an ECU 6 acts in such a way that a control valve 3 is switched, a differential pressure regulating valve 2 arranged on a passage 22 for connecting a tank main body 1 and a canister 8 to each other is set in an opening condition by connecting a diaphragm chamber 2a of the differential pressure regulating valve 2 to the canister 8 through passages 32, 33, and evaporation fuel in the tank 1 is led to the canister 8 for treatment. When the oiling port 10 is in a closing condition, the differential pressure regulating valve 2 is set in the closing condition by connecting the diaphragm chamber 2a of the differential pressure regulating valve 2 and the tank 1 to each other, and thereby, a sealing performance of the tank 1 is held.
|
