To provide a control valve for a fuel tank that compatibly reduces a collision sound generated by a sub-float and another member in engine purging and improves response to dynamic displacement in a fuel liquid level.SOLUTION: There is provided a control valve for a fuel tank that has a casing, a main float installed in the casing, a plate having a first gas storage chamber constituting a bottom part of the casing with an upper surface and formed of a peripheral wall portion stood downward from a peripheral edge of the upper surface, and a sub-float arranged on the plate to move up and down, wherein a second gas storage chamber is composed inside of a part of the upper surface including a gas supply hole of the first gas storage chamber and a partition wall portion separate from the peripheral wall portion, a clearance allowing fuel from a fuel tank to flow in is provided between the casing and the peripheral wall portion, and the upper surface has a projection seating portion which forms an inflow space into which the gas can flow from the gas supply hole when the sub-float is seated.SELECTED DRAWING: Figure 2

    【課題】エンジンパージによるサブフロートと他部材との衝突音低減と、燃料液面の動的変位に対する応答性向上とを両立させる燃料タンク用制御弁を提供する。【解決手段】ケーシングと、前記ケーシング内に設置されたメインフロートと、上面で前記ケーシングの底部を構成し、上面の周縁から下方に立設された周壁部とから形成された第1気体貯留室を有するプレートと、前記プレート上に上下動可能に配設されたサブフロートとを有し、前記サブフロートに対して、前記第1気体貯留室の気体供給孔を含む前記上面の一部と前記周壁部から離間した隔壁部とから第2気体貯留室を内設し、前記ケーシングと前記周壁部との間に燃料タンクからの燃料の流入を許容するクリアランスを有し、さらに、前記上面が、前記サブフロートが着座したときに、前記気体供給孔から気体が流入可能な流入空間を形成する凸状の着座部を有する燃料タンク用制御弁を提供する。【選択図】図2


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    Title :

    CONTROL VALVE FOR FUEL TANK


    Additional title:

    燃料タンク用制御弁


    Contributors:

    Publication date :

    2022-08-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F16K VALVES , Ventile



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