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    • 3. 发明授权
    • Fuel vapor processing system
    • 燃油蒸汽处理系统
    • US06951209B2
    • 2005-10-04
    • US10657788
    • 2003-09-08
    • Taiki YanaseHisayuki Gouma
    • Taiki YanaseHisayuki Gouma
    • F02M25/08F02M37/00F16K17/04
    • F02M25/0836Y10T137/7841Y10T137/86324
    • In a fuel vapor processing system, a float valve and a check valve are provided in upper parts of a fuel tank to conduct fuel vapor to a canister via a fuel vapor passage. The check valve includes a low set-pressure valve and high set-pressure valve, and operates in two stages so that the internal pressure of the fuel tank can be favorably controlled by the opening of the low set-pressure valve when the fuel tank is being filled to full so that the sensor associated with the fill nozzle can successfully detect a tank full state, and any excessive rise in the internal pressure of the fuel tank typically caused by a high temperature of the surrounding environment can be avoided by the opening of the high set-pressure valve.
    • 在燃料蒸气处理系统中,在燃料箱的上部设置有浮阀和止回阀,以通过燃料蒸汽通道将燃料蒸汽传送到罐。 止回阀包括一个低设定压力阀和高设定压力阀,分两个阶段进行操作,以便当油箱为燃油箱时,通过打开低压力阀可以有利地控制燃油箱的内部压力 被填充到满,使得与填充喷嘴相关联的传感器可以成功地检测到罐状态,并且通常由周围环境的高温引起的燃料箱的内部压力的任何过度上升可以通过打开 高设定压力阀。