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    Method for estimating the magnetisation curve of an electromagnetic actuator for controlling an engine valve
    3.
    发明公开
    Method for estimating the magnetisation curve of an electromagnetic actuator for controlling an engine valve 有权
    Verfahren zur Bestimmung der Magnetisierung eines elektromagnetischen Ventilsteuerungsaktuators

    公开(公告)号：EP1231361A2

    公开(公告)日：2002-08-14

    申请号：EP02003066.4

    申请日：2002-02-12

    申请人： MAGNETI MARELLI POWERTRAIN S.p.A.

    发明人： d'Alpaos, Egidio ,  Morselli, Michele ,  d'Antonio, Flavia

    IPC分类号： F01L9/04

    CPC分类号： F01L9/04 ,  F01L2009/0409 ,  F01L2009/0469

    摘要： Method for estimating the magnetisation curve (C) of an electromagnetic actuator (1) for controlling an engine valve (2), according to which a solenoid (8) is activated by a current (i) determined in order to attract an actuator body (4) and place the actuator body (4) in contact with the solenoid (8); the current (i) is gradually reduced until the actuator body (4) detaches from the solenoid (8) and the corresponding values assumed by the magnetic flow (ϕ) crossing a magnetic circuit (18) consisting of the solenoid (8) and the actuator body (4) are determined for at least some of the current (i) values.

    摘要翻译： 用于估计用于控制发动机气门（2）的电磁致动器（1）的磁化曲线（C）的方法，根据该方法，螺线管（8）由为了吸引致动器主体而确定的电流（i）启动 4）并将致动器本体（4）与螺线管（8）接触; 电流（i）逐渐减小，直到致动器主体（4）与螺线管（8）分离，并且由与由螺线管（8）组成的磁路（18）相交的磁流（φ）所假设的对应值 为当前（i）值中的至少一些确定致动器主体（4）。