| 摘要 |
PROBLEM TO BE SOLVED: To purge evaporating fuel smoothly by providing the first purging system involving a purge passage for connecting a canister to an intake pipe, and the second purging system involving a bypass passage for connecting a fuel tank to an engine intake pipe side by bypassing the canister. SOLUTION: The first purging system is constituted of a fuel tank 1, a canister 3, an intake pipe 7, a vapor passage 2 which connects the fuel tank 1 to the canister 3, and purging passages 4, 6 which connect the canister 3 to the intake pipe 7 and is formed with a solenoid valve 5. The second purging system is constituted of bypass passages 9, 11 which connect the fuel tank 1 to an intake pipe 7 side from the canister 3 with the canister 3 being bypassed, and formed with a operating valve 10. By opening the operating valve 10 at the time of the high load of an engine, it is possible to purge vapor to directly the intake pipe 7 through the bypass passages 9, 11, and prevent the canister 3 from being filled with evaporating fuel, and the odor of gasoline from being generated. |
