The refueling limiting valve comprises a valve body, a lower cover arranged on the lower portion of the valve body in a sleeving mode and an upper cover arranged on the upper portion of the valve body in a sleeving mode, a plurality of fuel inlet windows are formed in the side face of the lower cover, and a large round hole is formed in the center of the end face of the lower cover. The device is characterized in that a torsion spring seat and two rotating shaft seats in mirror symmetry are arranged on the edge of the large circular hole close to the lower cover; the torsional spring seat is positioned between the two rotating shaft seats; a valve plate mechanism is arranged on the two rotating shaft seats; the valve plate mechanism can seal the large circular hole under the action of self elasticity; according to the valve block mechanism, when oil enters the lower cover through an oil inlet window of the lower cover, a valve body ascends under the action of buoyancy to be attached to the upper cover; and when the oil level of the valve plate mechanism in the lower cover reaches a certain height compared with the oil level outside the refueling limiting valve, the valve plate mechanism is separated from the large circular hole. According to the method, the refueling amount can be accurately controlled, and the situation that oil shakes to enter the refueling limiting valve, so that the closing time of the refueling limiting valve is long, and OBD diagnosis fails or misinformation is caused is avoided.

    本发明涉及一种用于燃油箱上的加油限量阀,包括阀体、套设在阀体下部的下盖、套设在阀体上部的上盖,在下盖的侧面设有多个进油窗口,在下盖的端面的中心设有大圆孔;其特征是:在靠近下盖的大圆孔边缘设有一个扭簧座和两个镜像对称的转轴座;扭簧座位于两个转轴座之间;在两个转轴座上设有阀片机构;阀片机构能够在自身弹力的作用下封闭大圆孔;阀片机构在油液通过下盖的进油窗口进入下盖内部,阀体在浮力作用下上升与上盖贴合;阀片机构在下盖内的油液面高度较加油限量阀外部的油液面高度达到一定高度时,阀片机构与大圆孔分开。本发明能够准确控制加油量,避免油液晃动进入加油限量阀而使其关闭时间较长,导致OBD诊断失败或误报。


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    Title :

    Refueling limiting valve for fuel tank


    Additional title:

    一种用于燃油箱上的加油限量阀


    Contributors:
    YE ZHAOQUAN (author) / ZHANG LIN (author)

    Publication date :

    2022-07-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F16K VALVES , Ventile / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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