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热词
    • 11. 发明授权
    • Ion current detector
    • 离子电流检测器
    • US09470203B2
    • 2016-10-18
    • US12506010
    • 2009-07-20
    • Futoshi AidaKimihiko Tanaya
    • Futoshi AidaKimihiko Tanaya
    • F02P17/12F02D35/02F02P5/153
    • F02P17/12F02D35/021F02P5/153F02P2017/125Y02T10/46
    • The ion current detector includes: an ion bias circuit for supplying a bias voltage to an electrode of the ignition plug so as to cause the ignition plug to generate a spark discharge; and an ion current detection circuit for detecting an ion current generated in a combustion chamber by the spark discharge and for amplifying the detected ion current to output an ion current detection signal. The ion current detection circuit amplifies the ion current at an ion current amplification factor switched between a time when an ignition signal is supplied and a time when the ignition signal is not supplied. Specifically, when the ignition signal is supplied, the ion current amplification factor is set to a low value (approximately 50). When the ignition signal is not supplied, the ion current amplification factor is set to a high value (250 or more).
    • 离子电流检测器包括:离子偏置电路,用于向火花塞的电极提供偏置电压,以使火花塞产生火花放电; 以及离子电流检测电路,用于通过火花放电来检测在燃烧室中产生的离子电流并且用于放大所检测的离子电流以输出离子电流检测信号。 离子电流检测电路以提供点火信号的时间与未提供点火信号的时间之间切换的离子电流放大系数放大离子电流。 具体地,当提供点火信号时,将离子电流放大系数设定为低值(约50)。 当未提供点火信号时,将离子电流放大系数设定为高值(250以上)。