Patent ID: 9079488
Filing Date: 2015-07-14
Classification: B60K

Abstract:
1. A fuel tank structure comprising: a fuel tank that accommodates a fuel inside thereof; a canister having an absorber that adsorbs fuel vapor present in the fuel tank; a filled-up state regulating valve disposed inside the fuel tank and in a closed state when a fuel level inside the fuel tank reaches a predetermined filled-up state liquid level; a common pipe that communicates the filled-up state regulating valve and the canister; a branch pipe that extends from the upper portion of the filled-up state regulating valve and that is provided inside the fuel tank; a filling pipe that supplies fuel to the fuel tank and extends from the fuel tank to a position that is higher than the filled-up state liquid level; a valve housing attached to the branch pipe; a first valve body, disposed in the valve housing, that restricts gas movement in the valve hosing by closing an upper opening of the valve housing when the first valve body rises to a position in which the gas movement in the valve housing is allowed due to an internal pressure of the fuel tank being in a state where the fuel level inside the fuel tank is in a filled-up state; a clearance formed between the valve housing and the first valve body; a second valve body that closes a lower opening of the first valve body, and that allows the gas movement to the upper opening of the valve housing through an inside of the first valve body by opening the lower opening when the second valve body rises due to the internal pressure of the fuel tank; and an orifice formed in the first valve body that allows the gas movement between the clearance and the inside of the first valve body, the orifice having a resistance to the gas movement in a state where the second valve body closes the lower opening of the first valve body.