PROBLEM TO BE SOLVED: To provide a ventilation control valve for a fuel tank having desired responsiveness.SOLUTION: A ventilation control valve 3 for a fuel tank disposed on a ventilation passage connecting the inside and the outside of the fuel tank, is provided. The ventilation control valve 3 for the fuel tank includes a float 21 floating on a liquid level of a fuel and vertically moving. Further a valve mechanism 7 is disposed to switch a passage cross-sectional area of the ventilation passage to an opened state and a restricted state in which the passage cross-sectional area is restricted with respect to the opened state, in association with the float 21. Further a volume chamber 33 of which a volume is increased and decrease in association with the vertical movement of the float 21, and a flow rate adjustment mechanism 41 having a first state in which a fluid flows out from the inside to the outside of the volume chamber 33, and a second state which has the inflow from the outside to the inside different from the first state.SELECTED DRAWING: Figure 3

    【課題】望ましい応答性を有する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を提供する。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21を備える。フロート21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7を備える。フロート21の上下動に連動して容積が大小に変化する容積室33と、容積室33の内部から外部への流体の流出を第1状態とし、外部から内部への流入を第1状態と異なる第2状態にする流量調整機構41を備える。【選択図】図3


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    Title :

    VENTILATION CONTROL VALVE FOR FUEL TANK


    Additional title:

    燃料タンク用通気制御弁


    Contributors:

    Publication date :

    2018-01-25


    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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