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    Valve driving apparatus using an electromagnetic coil to move a valve body with reduced noise
    1.
    发明授权
    Valve driving apparatus using an electromagnetic coil to move a valve body with reduced noise 失效
    使用电磁线圈的阀驱动装置以降低噪音的方式移动阀体

    公开(公告)号：US5915347A

    公开(公告)日：1999-06-29

    申请号：US82669

    申请日：1998-05-21

    申请人： Akihiro Yanai ,  Iwao Maeda ,  Takashi Izuo ,  Tatuo Iida

    发明人： Akihiro Yanai ,  Iwao Maeda ,  Takashi Izuo ,  Tatuo Iida

    IPC分类号： F01L9/04 ,  F02D13/02 ,  F02D41/20 ,  H01F7/18

    CPC分类号： H01F7/1844 ,  F01L9/04 ,  F02D13/0253 ,  F02D41/20 ,  F02D2041/001 ,  Y02T10/18

    摘要： An electromagnetic force generated in a valve driving apparatus is rapidly decreased when a valve body moves to a position close to the end of its stroke so that a shock generated when the valve body reaches the end of the stroke is reduced. The valve body is movable between opposite ends of its stroke so as to open and close a valve provided in an internal combustion engine. An electromagnetic coil generates an electromagnetic force exerted on the valve body. A current supplied to the electromagnetic coil is controlled in accordance with an operational condition of the internal combustion engine. The current flowing in the electromagnetic coil is rapidly decreased when the valve body approaches the end of its stroke.

    摘要翻译： 当阀体移动到靠近其行程结束的位置时，在阀驱动装置中产生的电磁力迅速降低，使得当阀体到达行程结束时产生的冲击减小。 阀体可以在其行程的相对端之间移动，以打开和关闭设置在内燃机中的阀。 电磁线圈产生施加在阀体上的电磁力。 根据内燃机的运转状态来控制供给电磁线圈的电流。 当阀体接近其行程结束时，流入电磁线圈的电流迅速下降。