To provide a fuel tank ventilation control valve responsiveness of which is adjusted.SOLUTION: A fuel tank ventilation control valve 3 is mounted on a ventilation passage communicating the inside and the outside of a tank 2. The fuel tank ventilation control valve 3 is provided with: a float 54 floating on a fuel liquid surface and vertically moving; and a valve mechanism 23 switching a passage sectional area of the ventilation passage to an open state or a regulation state where the passage sectional area is more regulated than that in the open state in conjunction with the float 54. The float 54 has a volume chamber 61 the volume of which is changed variously in junction with the vertical movement of the float 54, in a space to a third case 53. A control clearance 67 as a flow amount adjusting mechanism is formed between a cylindrical wall 54a of the float 54 and a cylindrical wall 53c of the case 53. The volume chamber 61 functions as a damper by the control clearance 67.SELECTED DRAWING: Figure 1

    【課題】応答性が調節された燃料タンク用通気制御弁を提供する。【解決手段】燃料タンク用通気制御弁3は、タンク2の内部と外部とを連通する通気通路に設けられる。燃料タンク用通気制御弁3は、燃料の液面に浮いて上下動するフロート54を備える。フロート54に連動して通気通路の通路断面積を、開放状態、および開放状態より通路断面積が規制された規制状態に切り替える弁機構23を備える。フロート54は、第3のケース53との間に、フロート54の上下動に連動して容積が大小に変化する容積室61を有する。フロート54の筒状の壁54a、ケース53の筒状の壁53cとの間には、流量調整機構としての制御隙間67が形成されている。制御隙間67により、容積室61は、ダンパとして機能する。【選択図】図1


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    Title :

    FUEL TANK VENTILATION CONTROL VALVE


    Additional title:

    燃料タンク用通気制御弁


    Contributors:

    Publication date :

    2019-07-25


    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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