Evaporative emission control device for internal combustion engine

A evaporative emission control device for an internal combustion engine, comprising:

• a communication passage connecting an intake passage of the engine and a fuel tank to each other;
• a canister configured to adsorb a fuel evaporative gas in the communication passage;
• a communication passage opening-and-closing unit configured to establish and block communication between the communication passage and the intake passage;
• a canister opening-and-closing unit configured to allow the canister to open into the communication passage and to shut off the canister;
• a tank opening-and-closing unit configured to allow the fuel tank to open into the communication passage and to shut off the fuel tank;
• and
• a pressure detector configured to detect an internal pressure of the fuel tank,
• wherein, when the internal pressure of the fuel tank becomes higher than or equal to a predetermined value, the canister is shut off by the canister opening-and-closing unit.