PROBLEM TO BE SOLVED: To provide a fuel shut-off valve which can suppress additional fuel supply immediately after a stop of fuel supply, and can be easily designed while suppressing enlargement.SOLUTION: In a fuel shut-off valve (10), a second float valve (90) opens a second communication hole (87) of a second casing (80) and closes a second connection hole (88) when a liquid level reaches a first liquid level (FL2) after a start of fuel supply, after that, opens the second connection hole (88) when pressure in a first casing (30) is raised, and after that, opens the second communication hole (87) and the second connection hole (88) when additional fuel supply is performed. A first float valve (50) closes a first connection hole (31a) of the first casing (30) when the liquid level reaches a second liquid level (FL12) in a state that the second communication hole (87) and the second connection hole (88) are opened, and the second float valve (90) closes the second communication hole (87) after the first float valve (50) closes the first connection hole (31a).SELECTED DRAWING: Figure 2

    【課題】給油停止直後の追加給油を抑制可能とし、且つ、大型化を抑制しつつ容易に設計可能な燃料遮断弁を提供する。【解決手段】燃料遮断弁(10)において、第2フロート弁(90)は、給油開始後に第1液位(FL2)となった場合に第2ケーシング(80)の第2連通孔(87)を開けて第2接続孔(88)を閉じ、その後第1ケーシング(30)内の圧力が上昇した場合に第2接続孔(88)を開け、その後追加給油が実行された場合に第2連通孔(87)と第2接続孔(88)とを開け、第1フロート弁(50)は、第2連通孔(87)と第2接続孔(88)とが開いた状態で第2液位(FL12)に達した場合に第1ケーシング(30)の第1接続孔(31a)を閉じ、第2フロート弁(90)は、第1フロート弁(50)が第1接続孔(31a)を閉じた後に第2連通孔(87)を閉じる。【選択図】図2


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    Title :

    FUEL SHUT-OFF VALVE


    Additional title:

    燃料遮断弁


    Contributors:

    Publication date :

    2018-04-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

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



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