FUEL EVAPORATION GAS CONTROL DEVICE OF CANISTER FOR VEHICLE INCLUDING UNIFIED SOLENOID VALVE OF CANISTER CLOSE VALVE AND PURGE CONTROL SOLENOID VALVE WHICH IS CONTROLLED BY ECU

摘要

PURPOSE: A fuel evaporation gas control device of a canister for a vehicle is provided to easily diagnose the malfunction of the inside of the canister by a purge system and to maintain the functions of a canister close valve and a purge control solenoid valve which are unified as a solenoid valve. CONSTITUTION: A fuel evaporation gas control device of a canister for a vehicle comprises a control unit(20) inputted with the information from sensors(21) for detecting the state of an engine and a canister closing unit(30) operated by the control unit to open and close a first connection passage(11) and a second connection passage(12) respectively connected with the atmosphere and the engine. The exterior air flows into the canister except for the time for self diagnosis. The fuel evaporation gas collected in the canister is supplied to the engine only at intermediate and low speed ranges.