| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of control valves to be switched, when adsorbing or purging the evaporative fuel to/from a first canister or a second canister. SOLUTION: A pressure control valve 30 is arranged in a canister connection passage 18 for connecting the first canister 16 and the second canister 20 to each other. The pressure control valve 30 is provided with an oil-supply time opening valve to be opened at the positive pressure, when supplying the oil and a purge-time opening valve to be opened at a purge negative pressure, namely, to be opened by a flow from the second canister to the first canister 16. An orifice is set inside the pressure control valve 30.
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