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公开(公告)号：US06717412B1
公开(公告)日：2004-04-06
申请号：US09667574
申请日：2000-09-22
IPC分类号： G01R104
CPC分类号： G01R15/16 , F02D2041/2051 , F02P17/00 , F02P17/04 , F02P17/12 , F02P2017/006 , F02P2017/121
摘要： Method and apparatus for displaying ignition coil waveforms. The method includes disposing a plurality of capacitive elements adjacent a plurality of coil-over-plug ignition coils. Signals detected by the capacitive elements are supplied to an adapter in which signal gain, polarity, and range are selected according to a particular vehicle tested, and displayed.
摘要翻译： 显示点火线圈波形的方法和装置。 该方法包括在多个线圈绕组点火线圈附近设置多个电容元件。 由电容元件检测的信号被提供给适配器，其中信号增益，极性和范围根据被测试的特定车辆被选择并被显示。
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2.发明授权Method of deriving a primary clock from secondary signals in a distributorless ignition system 失效在无分配器点火系统中从次级信号导出主时钟的方法
公开(公告)号：US5175501A
公开(公告)日：1992-12-29
申请号：US651077
申请日：1991-02-06
申请人： Thomas D. Loewe , David M. Oles
发明人： Thomas D. Loewe , David M. Oles
摘要： An interface for coupling an engine analyzer to an engine having a distributorless ignition system includes a pair of pickup clamps for coupling signals from respective groups of spark plug wires. A logic cell array is supplied with spark plug secondary voltage polarity and pattern information, corresponding to an engine under test from a ROM. The technician is instructed as to which wires to place in each clamp. A semiconductor input switch is controlled by the logic cell array to sort the secondary voltages from the pickup clamps according to polarity. The real and the wasted sparks are then determined based upon the magnitude of the signals from the input switch. The apparatus permits a "rapid test" (of secondary voltages only) by developing a pseudo #1 primary clock from the pickup clamp signals. A CPU in the interface is controllable by an external computer or by an operator keypad. A vehicle "personality" module interfaces the logic cell array with the voltage levels on a connector of a corresponding vehicle.
摘要翻译： 用于将发动机分析器耦合到具有无分配器点火系统的发动机的接口包括一对用于耦合来自各组火花塞线的信号的拾取夹。 逻辑单元阵列具有对应于来自ROM的被测发动机的火花塞二次电压极性和模式信息。 指示技术人员将哪些电线放置在每个夹具中。 半导体输入开关由逻辑单元阵列控制，以根据极性对来自拾取夹的次级电压进行分类。 然后基于来自输入开关的信号的大小确定真实和浪费的火花。 该装置通过从拾取钳位信号开发伪＃1主时钟来允许“快速测试”（仅次级电压）。 接口中的CPU可由外部计算机或操作员键盘控制。 车辆“个性”模块将逻辑单元阵列与相应车辆的连接器上的电压电平相接触。
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公开(公告)号：US07010460B2
公开(公告)日：2006-03-07
申请号：US10695806
申请日：2003-10-30
CPC分类号： G01M15/044 , G01L3/1478
摘要： Engine cylinder contribution analysis is provided. An engine cylinder contribution tester includes a displacement measurement device and a signal analyzer. The displacement measurement device detects engine block movements or displacement relative to a fixed position caused by a poorly contributing cylinder. The displacement measurement device provides a displacement signal to the signal analyzer. The signal analyzer includes a cylinder contribution module for evaluating the displacement signal. If a particular cylinder is contributing less than the average of the other cylinders, the displacement signal indicates engine block movement associated with a lack of contribution from that cylinder.
摘要翻译： 提供发动机气缸贡献分析。 发动机气缸贡献测试仪包括位移测量装置和信号分析仪。 位移测量装置检测发动机缸体相对于由不良气缸引起的固定位置的运动或位移。 位移测量装置向信号分析仪提供位移信号。 信号分析器包括用于评估位移信号的气缸贡献模块。 如果特定气缸的贡献小于其他气缸的平均值，则位移信号表示与该气缸的贡献不足相关的发动机缸体移动。
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公开(公告)号：US06879919B2
公开(公告)日：2005-04-12
申请号：US10355267
申请日：2003-01-31
CPC分类号： G01R19/04 , G01R19/2506
摘要： Peak capture circuitry for measuring a peak value of a waveform characterized by a first portion having a first rate of change and a second portion having a relatively faster rate of change. Peak stretching circuitry stretches a portion of the waveform as a function of time. Digital signal processing circuitry samples an output waveform of the peak stretching circuitry for determining the peak value. Thus, despite any steeply sloped portion, samples can be reliably taken throughout the waveform for calculation of peak value.
摘要翻译： 峰值捕获电路，用于测量波形的峰值，其特征在于具有第一变化率的第一部分和具有相对更快变化率的第二部分。 峰值拉伸电路将波形的一部分拉伸为时间的函数。 数字信号处理电路对峰值拉伸电路的输出波形进行采样，以确定峰值。 因此，尽管有任何急剧倾斜的部分，样品可以在整个波形中可靠地计算峰值。
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5.发明授权
公开(公告)号：US5218302A
公开(公告)日：1993-06-08
申请号：US651677
申请日：1991-02-06
申请人： Thomas D. Loewe , David M. Oles
发明人： Thomas D. Loewe , David M. Oles
摘要： An interface for coupling an engine analyzer to an engine having a distributorless ignition system includes a pair of pickup clamps for coupling signals from respective groups of spark plug wires. A logic cell array is supplied with spark plug secondary voltage polarity and pattern information, corresponding to an engine under test from a ROM. The technician is instructed as to which wires to place in each clamp. A semiconductor input switch is controlled by the logic cell array to sort the secondary voltages from the pickup clamps according to polarity. The real and the wasted sparks are then determined based upon the magnitude of the signals from the input switch. The apparatus permits a "rapid test" (of secondary voltages only) by developing a pseudo primary clock from the pickup clamp signals. A CPU in the interface is controllable by an external computer or by an operator keypad. A vehicle "personality" module interfaces the logic cell array with the voltage levels on a connector of a corresponding vehicle.
摘要翻译： 用于将发动机分析器耦合到具有无分配器点火系统的发动机的接口包括一对用于耦合来自各组火花塞线的信号的拾取夹。 逻辑单元阵列具有对应于来自ROM的被测发动机的火花塞二次电压极性和模式信息。 指示技术人员将哪些电线放置在每个夹具中。 半导体输入开关由逻辑单元阵列控制，以根据极性对来自拾取夹的次级电压进行分类。 然后基于来自输入开关的信号的大小确定真实和浪费的火花。 该装置通过从拾取钳位信号开发伪主时钟，允许“快速测试”（仅次级电压）。 接口中的CPU可由外部计算机或操作员键盘控制。 车辆“个性”模块将逻辑单元阵列与相应车辆的连接器上的电压电平相接。
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6.发明授权Method and apparatus for generating display waveforms im wasted spark ignition systems 失效产生显示波形的方法和装置，浪费了火花点火系统
公开(公告)号：US5068613A
公开(公告)日：1991-11-26
申请号：US256168
申请日：1988-10-11
申请人： Keith A. Kreft , Michael Dikopf , Thomas D. Loewe
发明人： Keith A. Kreft , Michael Dikopf , Thomas D. Loewe
摘要： A method and apparatus of developing a stabilized power firing event signal for a cylinder in a wasted spark ignition system having pairs of complementarily connected cylinders, each with a spark plug connected to an opposite end of an independent ignition coil. The first and second firing event signals are developed for each spark plug upon firing of the ignition coil. The first and second signals are combined with like polarity in a summation circuit for eliminating common mode signal portions. The combined signal, which is now stabilized and accurately indicates spark duration, is used for capturing secondary ignition data and may be visually displayed for analysis.
摘要翻译： 一种在具有互补连接气缸的浪费火花点火系统的废气火花点火系统中开发用于气缸的稳定电力点火事件信号的方法和装置，每个气缸具有连接到独立点火线圈的相对端的火花塞。 在点火线圈点火时，为每个火花塞开发第一和第二点火事件信号。 在求和电路中，第一和第二信号与相似的极性组合以消除共模信号部分。 现在稳定并准确地指示火花持续时间的组合信号用于捕获二次点火数据，并且可以直观地显示用于分析。
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7.发明授权Method and apparatus for determining cylinder #1 power firing event in wasted spark ignition systems 失效在浪费火花点火系统中确定气缸＃1电力点火事件的方法和装置
公开(公告)号：US4795979A
公开(公告)日：1989-01-03
申请号：US941630
申请日：1986-12-15
申请人： Keith A. Kreft , Michael Dikopf , Thomas D. Loewe
发明人： Keith A. Kreft , Michael Dikopf , Thomas D. Loewe
CPC分类号： F02P17/04 , F02P15/08 , F02P17/02 , F02P2017/003 , F02P2017/006
摘要： A method of determining the cylinder #1 power firing event in a wasted spark ignition system comprises developing a first signal comprising the integration of all power firing event signals, a second signal comprises the integration of all wasted firing event signals and comparing the amplitudes of the two signals to determine which represents the power firing events. The firing event signals are sorted for integration based upon knowledge of the polarity of spark plug firings, the cylinder firing order and the occurrence of a #1 cylinder firing event signal.
摘要翻译： 确定浪费火花点火系统中的气缸＃1功率点火事件的方法包括开发包括所有功率点火事件信号的积分的第一信号，第二信号包括所有浪费的点火事件信号的积分，并将 两个信号来确定哪个代表了发射功率事件。 基于火花塞点火的极性，气缸点火顺序和＃1气缸点火事件信号的发生的知识，对点火事件信号进行排序以进行积分。
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