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    • 2. 发明申请
    • Throttle Valve Controller for Internal Combustion Engine
    • 节气门控制器内燃机
    • US20080141976A1
    • 2008-06-19
    • US11945657
    • 2007-11-27
    • Yoshihiko AKAGIHidefumi IWAKIKenji ONO
    • Yoshihiko AKAGIHidefumi IWAKIKenji ONO
    • F02D9/08F02D41/00
    • F02D11/105F02D11/107F02D41/2464F02D2041/2048F02D2250/16
    • If a throttle valve is moved toward the mechanical full close position at high speed, the throttle valve may overshoot and collide against the full close position. This may damage and deform the throttle valve. It is an object of the present invention to set a lower limiter to the throttle valve so as to secure a margin to prevent such collision while attaining lowered fuel consumption or improved fuel efficiency.The above-mentioned object is attained by a throttle valve controller for an internal combustion engine, which comprises: a throttle valve which is driven by a motor; means for determining the target opening of the throttle valve based on the operating state of the vehicle or internal combustion engine; a first lower limit which is determined beforehand as the minimum target opening; and means for setting a second lower limit which is smaller than the first lower limit if the determined target opening is smaller than a predetermined opening and/or if the rotation speed of the internal combustion engine is lower than a predetermined speed.
    • 如果节气门以高速向机械全关闭位置移动,则节流阀可能会过冲并碰到完全关闭位置。 这可能会损坏节流阀并使其变形。 本发明的一个目的是设定一个节流阀的下限,以便确保一个余量以防止这种碰撞,同时达到降低的燃料消耗或提高的燃料效率。 上述目的是通过一种用于内燃机的节气门控制器实现的,其包括:由电动机驱动的节气门; 用于基于车辆或内燃机的操作状态确定节气门的目标开度的装置; 预先确定为最小目标开口的第一下限; 以及如果所确定的目标开度小于预定开口和/或内燃机的转速低于预定速度,则设定小于第一下限的第二下限的装置。
    • 8. 发明授权
    • Butterfly valve device
    • 蝶阀装置
    • US07866298B2
    • 2011-01-11
    • US12014526
    • 2008-01-15
    • Takahiro ShimuraMasashi BanseHidefumi Iwaki
    • Takahiro ShimuraMasashi BanseHidefumi Iwaki
    • F16K1/26F02D9/10
    • F02D9/101F02D9/1015F02D9/104F02D9/1045F02D9/1055F02D9/106F02D9/108
    • An object of the present invention is to provide a butterfly valve device made of resin, the butterfly valve device being little susceptible the secular change in gas flow (in particular, the minimum flow) or random changes.According to the present invention, when a butterfly valve is located at a full-closed position facing a peripheral lower surface of a semicircular portion with respect to a rotating shaft of the butterfly valve made of a resin material, a partial annular projection is adapted to radially inwardly extend towards an inner wall surface of a fluid path, the partial annular projection including a plane that contacts the peripheral lower surface of the valve to form a fluid seal. Preferably, while the valve opens only by the thickness thereof from a mechanically full-closed position, from which the valve cannot mechanically rotate any more in a close direction, a surface on the periphery of the valve is formed in a curved surface shape having the specific curvature so that the specified minimum airflow is achieved at the mechanically full-closed position. In addition, cylindrical elastic sealing members are mounted around the shaft in a bearing hole, and an edge on the fluid path side of the sealing members elastically contacts an annular surface formed at a position facing the bearing hole about the rotating shaft of the valve.
    • 本发明的目的是提供一种由树脂制成的蝶阀装置,该蝶形阀装置几乎不受气流的长期变化(特别是最小流量)或随机变化的影响。 根据本发明,当蝶阀相对于由树脂材料制成的蝶形阀的旋转轴相对于半圆形部分的周边下表面处于全闭合位置时,部分环形突起适于 径向向内延伸朝向流体路径的内壁表面,部分环形突起包括接触阀的周边下表面以形成流体密封的平面。 优选地,当阀从机械全关闭位置打开时,阀不能在其附近机械地旋转,阀的周边上的表面形成为具有 使得在机械全关闭位置实现规定的最小气流。 此外,圆柱形弹性密封件围绕轴安装在轴承孔中,并且密封件的流体通道侧上的边缘弹性地接触形成在与阀的旋转轴相对的轴承孔的位置处的环形表面。