Fuel tank isolation solenoid valve for vehicle

A fuel tank isolation solenoid valve for a vehicle comprising:

• an upper case;
• a bobbin mounted in the upper case, the bobbin being wound around with a coil;
• a core mounted in the bobbin, the core having a plunger passage which is open at a lower end of the plunger passage;
• a plunger rotation path formed in an inner surface of the plunger passage in a shape of a closed ring to have an upper holding groove and a lower holding groove;
• a second plunger including a holding protrusion, which is formed on a circumferential surface of the second plunger to be raised and lowered along the plunger rotation path and to be received and held in the upper holding groove and the lower holding groove;
• a first plunger coupled to the second plunger such that the second plunger is disposed on the first plunger and is rotatable relative to the first plunger, the first plunger being vertically movable and being disposed in the plunger passage;
• a lower case assembled with the upper case, the lower case further comprising:
• a first passage communicating with a fuel tank;
• a second passage communicating with a canister;
• and
• a communication passage formed between the first passage and the second passage;
• a valve body disposed under the first plunger and being vertically movable to open and close the communication passage;
• a first spring disposed between a lower surface of the core and a lower end of the first plunger;
• and
• a second spring disposed between a lower surface of the valve body and the communication passage.