Patent ID: 8578914

Claim:
A fuel tank valve structure controlling emission gas in a hybrid vehicle, the fuel tank structure comprising: a housing having one side connected with the fuel tank and the other side connected to a canister; a check valve opening/closing in the housing connected with the canister; a solenoid valve connected with the check valve to open/close the check valve to adjust an internal pressure of the fuel tank; a fuel limit vent valve apparatus connected to the end, which is connected to the fuel tank, of the housing; and a relief valve connected to the lower end, which connected to the canister, of the housing, wherein the check valve includes: a check valve rubber with an orifice at the center thereof which selectively keeps the emission gas in the fuel tank; a check valve body fixed in contact with one side of the check valve rubber; and a check valve spring disposed inside the check valve and the check valve rubber to provide elasticity, and wherein the solenoid valve includes: a solenoid valve case; a rod selectively coupled to the orifice of the check valve rubber; a plunger protruding outward and connected with the other side of the rod to move with the rod; a core disposed apart from the plunger and having a groove formed inward to be in close contact with the end of the plunger; and a coil wounding around the plunger and the core.