System and method for generating a knock determination window for an ion current sensing system
    2.
    发明公开
    System and method for generating a knock determination window for an ion current sensing system 有权
    系统和方法,用于在装置中生成用于爆震检测窗口,用于检测离子电流

    公开(公告)号:EP1384982A1

    公开(公告)日:2004-01-28

    申请号:EP03077070.5

    申请日:2003-07-02

    IPC分类号: G01L23/22 F02D41/14

    摘要: An ignition apparatus including a primary (22) and a secondary (24) winding for producing a spark voltage, an ion current detection circuit (32) for producing an ion current signal (33), a slope detector (36) and a knock detector (34). The slope detector (36) determines when the ion current signal (33) exhibits a slope indicative of a time period (t2-t3) when knock is likely to occur, and de-asserts a knock reset signal (64). The knock reset signal (64) holds the knock detector (34) in reset, thus disallowing or masking the processing of signals by the knock detector (36) that may be mistaken for knock.

    摘要翻译: 的点火装置,包括绕组用于产生火花电压到离子电流检测电路(32),用于在离子电流信号产生(33)的初级(22)和次级(24),一个斜率检测器(36)和一个检测器爆震 (34)。 斜率检测器(36)bestimmt当离子电流信号(33)显示表示时间段(T2-T3)当爆震可能发生的一个斜率,并去断言的爆震复位信号(64)。 爆震复位信号(64)保持所述爆震检测器(34)复位,从而不允许或由爆震检测器(36)的掩蔽信号的处理也可能被误认为爆震。