Low cost circuit for IC engine diagnostics using ionization current signal
    1.
    发明授权
    Low cost circuit for IC engine diagnostics using ionization current signal 有权
    使用电离电流信号的IC引擎诊断的低成本电路

    公开(公告)号:US07197913B2

    公开(公告)日:2007-04-03

    申请号:US10655273

    申请日:2003-09-04

    IPC分类号: G01M15/00 G01L23/22

    CPC分类号: F02P17/12 F02P2017/125

    摘要: This feature of the present invention comprises a method, apparatus, and system for detecting and conditioning an ionization current signal. In one embodiment of the invention, an analog signal conditioning circuit detects and processes the ionization signal. The analog signal conditioning circuit uses a signal isolator having an input and an output, an amplifier having a first and a second input, and a first and a second output, wherein the first input operably connected to the signal isolator output, a peak detector having a first and a second input, and an output, wherein the first input is operably connected to the first output of the amplifier, and an integrator having a first and a second input, and an output, wherein the first input is operably connected to the second output of the amplifier.

    摘要翻译: 本发明的该特征包括用于检测和调理电离电流信号的方法,装置和系统。 在本发明的一个实施例中,模拟信号调理电路检测和处理电离信号。 模拟信号调理电路使用具有输入和输出的信号隔离器,具有第一和第二输入的放大器以及第一和第二输出,其中可操作地连接到信号隔离器输出的第一输入端,具有 第一输入和第二输入以及输出,其中第一输入可操作地连接到放大器的第一输出,以及具有第一和第二输入的积分器和输出,其中第一输入可操作地连接到 放大器的第二个输出。

    Device to provide a regulated power supply for in-cylinder ionization detection by using the ignition coil fly back energy and two-stage regulation
    4.
    发明授权
    Device to provide a regulated power supply for in-cylinder ionization detection by using the ignition coil fly back energy and two-stage regulation 失效
    通过使用点火线圈回火能量和两级调节来提供用于缸内电离检测的稳压电源的装置

    公开(公告)号:US07005855B2

    公开(公告)日:2006-02-28

    申请号:US10738550

    申请日:2003-12-17

    IPC分类号: F02P17/00

    CPC分类号: F02P17/12 F02P2017/125

    摘要: The present invention is directed to a dual charge rate power supply circuit and method for ionization detection. The circuit includes a first diode, first and second capacitors, and first and second current paths. The first diode includes an anode operably connected to a first end of a primary winding. The first capacitor has a second end operably connected to ground and the second capacitor has a first end operably connected to the cathode of the first diode as well as a second end operably connected to ground. The first and second current paths are operably connected between the first and second capacitors and include a second diode, a parallel combination of a first resistor and a third diode, and a second resistor. The first diode is operably connected in parallel with the first capacitor. The second resistor has a first end operably connected to the cathode of the first diode and the parallel combination is operably connected between a second end of the second resistor and the first end of the first capacitor.

    摘要翻译: 本发明涉及一种双电荷率电源电路及电离检测方法。 该电路包括第一二极管,第一和第二电容器以及第一和第二电流路径。 第一二极管包括可操作地连接到初级绕组的第一端的阳极。 第一电容器具有可操作地连接到地的第二端,并且第二电容器具有可操作地连接到第一二极管的阴极的第一端以及可操作地连接到地的第二端。 第一和第二电流路径可操作地连接在第一和第二电容器之间,并且包括第二二极管,第一电阻器和第三二极管的并联组合以及第二电阻器。 第一二极管与第一电容器并联地可操作地连接。 第二电阻器具有可操作地连接到第一二极管的阴极的第一端,并联组合可操作地连接在第二电阻器的第二端和第一电容器的第一端之间。

    Methods of diagnosing open-secondary winding of an ignition coil using the ionization current signal
    5.
    发明授权
    Methods of diagnosing open-secondary winding of an ignition coil using the ionization current signal 有权
    使用电离电流信号诊断点火线圈的次级绕组的方法

    公开(公告)号:US07251571B2

    公开(公告)日:2007-07-31

    申请号:US10655985

    申请日:2003-09-05

    IPC分类号: G01R19/00 G01R27/00

    摘要: In a first embodiment, the present invention is a method of detecting an open secondary winding, including the steps of enabling an integrator, resetting the integrator, detecting an ionization current, integrating the ionization current over a spark window, comparing the integrated ionization current with a threshold, and setting an open secondary flag if the integrated ionization current is below the threshold. In another preferred embodiment, the invention is a method of detecting an open secondary winding by measuring spark duration including the steps of comparing an ionization signal with a first threshold, measuring the spark duration when the ionization signal is greater than the first threshold, comparing said spark duration with a second threshold, and setting an open secondary flag.

    摘要翻译: 在第一实施例中,本发明是一种检测开路次级绕组的方法,包括以下步骤:使积分器复位积分器,检测电离电流,将电离电流整合在火花窗上,将积分电离电流与 阈值,并且如果集成电离电流低于阈值,则设置打开的次级标志。 在另一个优选实施例中,本发明是一种通过测量火花持续时间来检测开路次级绕组的方法,包括以下步骤:将电离信号与第一阈值进行比较,当电离信号大于第一阈值时测量火花持续时间, 具有第二阈值的火花持续时间,并设置打开的辅助标志。

    Method and system of estimating MBT timing using in-cylinder ionization signal
    6.
    发明授权
    Method and system of estimating MBT timing using in-cylinder ionization signal 有权
    使用缸内电离信号估算MBT定时的方法和系统

    公开(公告)号:US07290442B2

    公开(公告)日:2007-11-06

    申请号:US10926110

    申请日:2004-08-25

    IPC分类号: G01M15/00

    CPC分类号: F02D35/021 F02D41/009

    摘要: A robust multi-criteria minimum timing for the best torque (MBT) timing estimation method and apparatus utilizes different ionization signal waveforms that are generated under different engine operating conditions. The MBT timing criteria is calculated based upon both ionization and analog derivative ionization. Multiple MBT timing criteria are determined and combined to increase the reliability and robustness of MBT timing estimation based upon spark plug ionization signal waveforms. In a preferred embodiment, a combination of the MBT timing estimation criteria comprises a maximum flame acceleration location, a 50% burn location, and a second peak location.

    摘要翻译: 用于最佳扭矩(MBT)定时估计方法和装置的鲁棒多准则最小定时利用在不同发动机工作条件下产生的不同电离信号波形。 基于电离和类比衍生电离计算MBT时序准则。 确定并组合多个MBT定时标准,以增加基于火花塞电离信号波形的MBT定时估计的可靠性和鲁棒性。 在优选实施例中,MBT定时估计标准的组合包括最大火焰加速位置,50%燃烧位置和第二峰值位置。