Method for evaluating an ion current signal of a self-igniting internal combustion engine
    1.
    发明授权
    Method for evaluating an ion current signal of a self-igniting internal combustion engine 有权
    自燃式内燃机的离子电流信号的评价方法

    公开(公告)号:US06279538B1

    公开(公告)日:2001-08-28

    申请号:US09382189

    申请日:1999-08-23

    IPC分类号: F02P500

    摘要: A method for evaluating an ion current signal of a self-igniting internal combustion engine, with the ignition shift being derived from the time shift of the local maximum in the curve of the ion current signal relative to an injection point in time. Similarly, continuous injection in a cylinder can be detected when the ion current signal is integrated and evaluated in terms of area and/or when the position and/or height of the maximum of the ion current signal are evaluated. Carbon formation can be detected by an evaluation of the time curve of the ion current signal following an injection. For example, the parameters of the main injection can be controlled as a function of an evaluation of the measured ion current following a preinjection. When a continuous injection is detected, injection can be suppressed at least in those cylinders in which continuous injection was detected.

    摘要翻译: 一种用于评估自点火内燃机的离子电流信号的方法,其中点火偏移是根据离子电流信号的曲线中的局部最大值相对于时间点的时间偏移导出的。 类似地,当离子电流信号被整合并且根据面积和/或当评估离子电流信号的最大值的位置和/或高度时,可以检测气缸中的连续喷射。 可以通过评价注入后的离子电流信号的时间曲线来检测碳形成。 例如,主注射的参数可以作为在预注射后测量的离子电流的评估的函数来控制。 当检测到连续喷射时,至少在检测到连续喷射的那些气缸中可以抑制喷射。