To provide a fuel shut-off valve capable of suppressing leakage of fuel.SOLUTION: A tank 12 stores fuel. A main passage 38 communicates a tank 12 with a vapor passage 16. The main passage 38 is opened and closed by a main valve 21. An auxiliary passage 61 smaller than the main passage is opened and closed by an auxiliary valve 22. A main float 50 operates the main valve 21 in accordance with a liquid level. An auxiliary float 70 operates the auxiliary valve 22 in accordance with the liquid level. An auxiliary seal position S2 in a height direction of an auxiliary seal portion of the auxiliary valve 22 is lower than a main seal position S1 in the height direction of a main seal portion of the main valve 21. A second close liquid level FL2c at which the auxiliary float 70 closes the auxiliary valve 22 is lower than a first close liquid level FL1c at which the main float 50 closes the main valve 21.SELECTED DRAWING: Figure 5

    【課題】燃料の漏れ出しが抑制された燃料遮断弁を提供する。【解決手段】タンク12は、燃料を溜める。主通路38は、タンク12とベーパ通路16とを連通する。主通路38は、主弁21によって開閉される。主通路より小さい副通路61は、副弁22によって開閉される。主フロート50は、液面に応じて主弁21を操作する。副フロート70は、液面に応じて副弁22を操作する。副弁22の副シール部分の高さ方向における副シール位置S22は、主弁21の主シール部分の高さ方向における主シール位置S21より低い。副フロート70が副弁22を閉じる第2閉鎖液面FL2cは、主フロート50が主弁21を閉じる第1閉鎖液面FL1cより低い。【選択図】図5


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    Title :

    FUEL SHUT-OFF VALVE


    Additional title:

    燃料遮断弁


    Contributors:

    Publication date :

    2019-04-25


    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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