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    • 5. 发明授权
    • Evaporated fuel treatment apparatus
    • 蒸发燃料处理设备
    • US08640676B2
    • 2014-02-04
    • US13044636
    • 2011-03-10
    • Ayumu HoribaMasakazu KitamotoJunji SaigaYoshikazu Kaneyasu
    • Ayumu HoribaMasakazu KitamotoJunji SaigaYoshikazu Kaneyasu
    • F02M33/02
    • F02M25/0836F02M25/089
    • An evaporated fuel treatment apparatus includes a control valve having a dead zone range in which an evaporated fuel is blocked even if the opening angle is increased from a close position in opening direction and a communicating range in which the evaporated fuel is allowed to flow therethrough when opening angle is increased from the dead zone range. A control unit determines whether the opening angle is switched between the dead zone range and the communicating range. The switching is determined on the basis of a pressure inside the fuel tank detected with a pressure sensor and an air-fuel ratio detected by an air-fuel ratio sensor. A control valve installed in a communication path between a fuel tank and a canister is prevented from being seized.
    • 蒸发燃料处理装置包括具有死区范围的控制阀,其中蒸发燃料即使从打开方向的关闭位置开放角度以及允许蒸发的燃料流过其中的通过范围而阻塞, 开放角度从死区范围增加。 控制单元确定在死区范围和通信范围之间是否切换打开角度。 基于由压力传感器检测到的燃料箱内的压力和由空燃比传感器检测的空燃比来确定切换。 安装在燃料箱和罐之间的连通路径中的控制阀被防止被卡住。