Timing control for an engine having a capacitor discharge ignition system
    1.
    发明授权
    Timing control for an engine having a capacitor discharge ignition system 失效
    具有电容器放电点火系统的发动机的定时控制

    公开(公告)号:US5337717A

    公开(公告)日:1994-08-16

    申请号:US956769

    申请日:1991-05-31

    IPC分类号: F02P3/08 F02P7/03 F02P5/15

    CPC分类号: F02P3/0861 F02P7/035

    摘要: An apparatus (8) is provided for controlling ignition in an engine having a ignition system (10), an engine cylinder sensor (48), and a piston disposed in the cylinder and being movable to a top dead center (TDC) position. The cylinder sensor (48) produces a first signal representing the position of the piston within the cylinder and having a frequency responsive to engine speed. The ignition system (10) includes a transformer (24) having a primary coil (26) which is energized in response to a cylinder select signal to produce sparking across an associated spark plug gap (22). A first circuit (98) is provided for sensing a delay between production of the cylinder select signal and the time at which current through a respective primary coil exceeds a preselected current level, and responsively producing a timing error signal. The cylinder selector (36) processes the timing error signal to produce a timing offset signal The cylinder selector then delivers a cylinder select signal as a function of the timing offset and a desired cylinder firing time. In this manner, the apparatus (8) compensates for the timing error introduced by the time required for transformer energization.

    摘要翻译: PCT No.PCT / US91 / 03774 Sec。 371日期1991年5月31日 102(e)1991年5月31日PCT PCT 1991年5月31日PCT公布。 出版物WO90 / 06517 日期:1990年6月14日。一种设备(8),用于控制具有点火系统(10),发动机气缸传感器(48)和设置在气缸中的活塞并可移动到上死点的发动机中的点火 中心(TDC)位置。 气缸传感器(48)产生表示活塞在气缸内的位置并具有响应于发动机转速的频率的第一信号。 点火系统(10)包括具有初级线圈(26)的变压器(24),该初级线圈(26)响应于气缸选择信号被激励以在相关的火花塞间隙(22)上产生火花。 提供第一电路(98),用于感测气缸选择信号的产生与通过相应初级线圈的电流超过预选电流水平的时间之间的延迟,以及响应地产生定时误差信号。 气缸选择器(36)处理定时误差信号以产生定时偏移信号。气缸选择器随后根据定时偏移和期望的气缸点火时间递送气缸选择信号。 以这种方式,装置(8)补偿由变压器通电所需的时间引入的定时误差。

    Diagnostic system for a capacitor discharge ignition system
    2.
    发明授权
    Diagnostic system for a capacitor discharge ignition system 失效
    电容放电点火系统诊断系统

    公开(公告)号:US5672972A

    公开(公告)日:1997-09-30

    申请号:US946491

    申请日:1992-11-09

    CPC分类号: F02P3/0861 F02P17/12

    摘要: An apparatus is provided for monitoring ignition in individual cylinders of a multi-cylinder engine of the type having an ignition system which includes a separate transformer for each cylinder. Each transformer has primary and secondary coils. The secondary coil is connected in series with a spark gap in an associated one of the cylinders. The ignition system further includes selector switches for receiving cylinder select signals and responsively connecting respective transformer primary coils. The current flows through the primary coil resulting in a voltage potential across an associated spark gap which normally increases to a magnitude sufficient to cause a spark across the spark gap. A first circuit receives the cylinder select signals, senses time delay between the reception of a cylinder select signal and sparking in a respective cylinder and responsively produces a delay signal indicative of the sensed time delay. A diagnostics controller receives the delay signal, compares the delay signal to a plurality of preselected thresholds and responsively produces a status signal indicating the status of ignition in a respective cylinder.

    摘要翻译: PCT No.PCT / US92 / 04515 Sec。 371日期:1992年11月9日 102(e)日期1992年11月9日PCT提交日期为1992年5月27日PCT公布。 第WO92 / 21876号公报 日期1992年10月12日提供了一种用于监测具有点火系统的多气缸发动机的单个气缸中的点火装置,该点火系统包括用于每个气缸的单独的变压器。 每个变压器都有初级和次级线圈。 次级线圈与相关联的一个气缸中的火花间隙串联连接。 点火系统还包括用于接收气缸选择信号和响应地连接各个变压器初级线圈的选择开关。 电流流经初级线圈,导致跨越相关火花间隙的电压电势,其通常增加到足以引起火花间隙上的火花的量级。 第一电路接收气缸选择信号,感测在气缸选择信号的接收和相应气缸中的火花之间的时间延迟,并且响应地产生指示所感测的时间延迟的延迟信号。 诊断控制器接收延迟信号,将延迟信号与多个预先选择的阈值进行比较,并且响应地产生指示相应气缸中的点火状态的状态信号。