An ECU opens a first valve of the first purge line and a second valve of the second purge line to generate an air flow through the first connection passage, the canister and the second connection passage to desorb the fuel vapor from the adsorbent and to purge the desorbed fuel vapor into the intake air passage in {HEAD ~ an operational period} of {TAIL ~ the supercharging device} 
An ECU opens a first valve of the first purge line and a second valve of the second purge line to generate an air flow through the first connection passage , the canister and the second connection passage to desorb the fuel vapor from the adsorbent and to purge the desorbed fuel vapor into the intake air passage in { HEAD ~ an operational period } of { TAIL ~ the supercharging device }
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