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    Method to control auto-ignition in an internal combustion engine equipped with variable valve timing control
    2.
    发明授权
    Method to control auto-ignition in an internal combustion engine equipped with variable valve timing control 有权
    在装有可变气门正时控制的内燃机中控制自动点火的方法

    公开(公告)号：US07131425B2

    公开(公告)日：2006-11-07

    申请号：US11103407

    申请日：2005-04-11

    申请人： Vijay Ramappan ,  Brian R. Lovegrove ,  Philip Allen Karau ,  Sergio Eduardo Garcia

    发明人： Vijay Ramappan ,  Brian R. Lovegrove ,  Philip Allen Karau ,  Sergio Eduardo Garcia

    IPC分类号： F02P5/05 ,  F02P5/00

    CPC分类号： F01L1/3442 ,  F01L2800/00 ,  F01L2810/04 ,  F02D13/0238 ,  F02D2041/001 ,  F02P5/1522 ,  G01L23/225 ,  Y02T10/18 ,  Y02T10/46

    摘要： A method and control system to accomplish knock control on a multi-cylinder spark-ignition internal combustion engine equipped variable cam phasing system, comprising monitoring cam position, crankshaft position, and, engine knock signal, determining cam position relative to crankshaft position, and implementing either a global cylinder knock control strategy or an individual cylinder knock control strategy, based upon whether the determined cam position relative to crankshaft position is near a default position, the determined cam position indicates the variable cam phasing system is operating in a transient mode, or, the determined cam position relative to crankshaft position is substantially different from the default position.

    摘要翻译： 一种用于对配有可变凸轮定相系统的多气缸火花点火内燃机进行爆震控制的方法和控制系统，包括监测凸轮位置，曲轴位置和发动机爆震信号，确定相对于曲轴位置的凸轮位置，以及实施 根据确定的相对于曲轴位置的凸轮位置是否接近默认位置，全局气缸爆震控制策略或单独气缸爆震控制策略，所确定的凸轮位置指示可变凸轮定相系统以瞬态模式运行，或 所确定的相对于曲轴位置的凸轮位置与默认位置基本不同。

    System for rejecting noise in ignition knock data
    3.
    发明授权
    System for rejecting noise in ignition knock data 有权
    点火爆震数据中排除噪音的系统

    公开(公告)号：US06338267B1

    公开(公告)日：2002-01-15

    申请号：US09506186

    申请日：2000-02-17

    申请人： Philip Allen Karau

    发明人： Philip Allen Karau

    IPC分类号： G01L2322

    CPC分类号： G01L23/225 ,  G01L23/221

    摘要： A device for rejecting noise in an ion-sense ignition knock signal compares an integrated knock signal to a peak knock signal multiplied by a time factor to determine the presence of noise. A bandpass filter coupled to an engine's spark plug through ion-sensing circuitry generates a filtered knock signal. The filtered knock signal is passed through a rectifier to produce a rectified knock signal. The rectified knock signal is then passed through an integrator and a peak detector to produce an integrated knock signal and a peak knock signal, respectively. The peak knock signal is multiplied by a predetermined time factor and the result is compared to the integrated knock signal. If the result is less than the integrated knock signal, then no noise disturbance occurred and the integrated knock signal is passed on to a knock detector. If, on the other hand, the result is greater than the integrated knock signal, a noise disturbance has occurred and the integrated signal is reduced to some minimum value before being passed on to the knock detector.

    摘要翻译： 用于在离子感测点火爆震信号中排除噪声的装置将积分爆震信号与乘以时间因子的峰值爆震信号进行比较，以确定是否存在噪声。 通过离子感测电路耦合到发动机的火花塞的带通滤波器产生滤波的爆震信号。 经滤波的爆震信号通过整流器以产生整流爆震信号。 经校正的爆震信号然后通过积分器和峰值检测器，分别产生积分爆震信号和峰值爆震信号。 将峰值爆震信号乘以预定的时间因子，并将结果与​​积分的爆震信号进行比较。 如果结果小于积分爆震信号，则不会发生噪声干扰，并将积分的爆震信号传递到爆震检测器。 另一方面，如果结果大于积分的爆震信号，则发生噪声干扰，并且在传递到爆震检测器之前将积分信号减小到一定的最小值。

    Buffered ion sense current source in an ignition coil
    4.
    发明授权
    Buffered ion sense current source in an ignition coil 失效
    点火线圈中的缓冲离子感测电流源

    公开(公告)号：US06741080B2

    公开(公告)日：2004-05-25

    申请号：US10042114

    申请日：2001-10-19

    申请人： Philip Ralph Peterson ,  Philip Allen Karau ,  Scott B. Kesler

    发明人： Philip Ralph Peterson ,  Philip Allen Karau ,  Scott B. Kesler

    IPC分类号： F02P1700

    CPC分类号： F02P17/12

    摘要： In an ignition coil assembly of an ion sensing ignition system having an ignition coil output, a buffered ion-sense current source circuit is provided and includes a current sensing circuit, the current sensing circuit being disposed so as to be communicated with the ignition coil output and an active current source circuit, the active current source circuit being disposed so as to be communicated with the current sensing circuit and a current measuring device.

    摘要翻译： 在具有点火线圈输出的离子感测点火系统的点火线圈组件中，提供缓冲离子感测电流源电路并且包括电流感测电路，电流感测电路被设置成与点火线圈输出 和有源电流源电路，所述有源电流源电路设置成与所述电流感测电路和电流测量装置连通。

    Method of identifying engine cylinder combustion sequence based on combustion quality
    5.
    发明授权
    Method of identifying engine cylinder combustion sequence based on combustion quality 有权
    基于燃烧质量识别发动机气缸燃烧序列的方法

    公开(公告)号：US06520166B1

    公开(公告)日：2003-02-18

    申请号：US09972824

    申请日：2001-10-05

    申请人： Philip Allen Karau ,  Raymond O. Butler, Jr.

    发明人： Philip Allen Karau ,  Raymond O. Butler, Jr.

    IPC分类号： F02P515

    CPC分类号： F02P17/12 ,  F02D35/021 ,  F02D41/009

    摘要： An improved method of identifying the cylinder combustion sequence of a four-stroke internal combustion engine accepts of rejects an assumed combustion sequence based on measured ion current combustion quality (CQ) indications. Individual CQ indications for the various engine cylinders are algebraically combined as a function of the assumed combustion sequence so that the combined CQ indication increases in a first polarity if the assumed combustion sequence is correct, and in a second polarity if the assumed combustion sequence is incorrect. When the absolute value of the combined CQ indication exceeds a threshold, the polarity of the combined CQ indication is used to either accept or reject the assumed combustion sequence. Each of the measured CQ indications are used without regard to the engine operating condition, and the threshold to which the combined CQ indication is compared is reflective of a confidence level in the assumed combustion sequence, and is not used to distinguish between combustion and exhaust strokes in an individual engine cylinder.

    摘要翻译： 基于测量的离子电流燃烧质量（CQ）指示，识别四冲程内燃机的气缸燃烧序列的改进方法接受拒绝假定的燃烧序列。 各个发动机气缸的各个CQ指示作为假定的燃烧序列的函数被代数地组合，使得如果假设的燃烧序列是正确的，组合的CQ指示以第一极性增加，并且如果假定的燃烧序列不正确则以第二极性 。 当组合CQ指示的绝对值超过阈值时，组合CQ指示的极性用于接受或拒绝假设的燃烧序列。 在不考虑发动机工作条件的情况下使用每个测量的CQ指示，并且比较组合的CQ指示的阈值反映了假定燃烧序列中的置信水平，并且不用于区分燃烧和排出冲程 在一个单独的发动机气缸。

    Ion sense ignition bias circuit
    7.
    发明授权
    Ion sense ignition bias circuit 失效

    公开(公告)号：US06498490B2

    公开(公告)日：2002-12-24

    申请号：US09845377

    申请日：2001-04-30

    申请人： Philip Allen Karau ,  Philip Ralph Peterson

    发明人： Philip Allen Karau ,  Philip Ralph Peterson

    IPC分类号： F02P1700

    CPC分类号： F02P17/12 ,  F02D2041/2075 ,  F02P3/051 ,  F02P2017/125

    摘要： Disclosed is a bias and measuring circuit that improves the ion sense measurement and ignition performance of an Ion Sense Ignition system where the ion current signal processing is implemented remote from the ignition coil. Specifically, the bias and measuring circuit of the invention reduces the effects of secondary harness capacitance on the ion current signal, minimizes the effects of harness electrical leakage and reduces the chances for “spark-on-make” (an ignition firing when the ignition coil primary is initially energized).