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公开(公告)号：US4490799A
公开(公告)日：1984-12-25
申请号：US327733
申请日：1981-12-04
CPC分类号： F02P17/08
摘要： An ignition analyzer apparatus tests the condition of the ignition coil of an internal combustion engine. A gating pulse is supplied to a test circuit immediately before the points are to open for a selected cylinder which causes the test circuit to provide a low resistance in parallel with the points when the points open. This allows a reduced primary current to flow through the ignition coil and prevents the production of a voltage pulse large enough to fire the spark plug for the selected cylinder. While the points are open and the test circuit is providing a low resistance path, the primary current flowing through the coil is measured. The gating pulse ends approximately half-way between the "points open" time of the selected cylinder and the "points open" time of the next cylinder so that the rotor of the distributor is between distributor terminals. When the gating pulse ends, the test circuit changes to a nonconductive state, and since the points have not yet closed, the primary current is interrupted and a high voltage secondary test signal is induced in the secondary of the ignition coil. This test signal cannot, however, fire a spark plug since the rotor is in between distributor terminals, and since the reduced amplitude of the primary current prevents arc-over from the rotor to the distributor terminals. The measured primary current and the measured high voltage secondary test signal are used to provide an indication of ignition coil condition.
摘要翻译： 点火分析装置测试内燃机的点火线圈的状态。 在所选择的气缸的点打开之前，门控脉冲被提供给测试电路，这使得测试电路在点打开时与点并联提供低电阻。 这允许减小的初级电流流过点火线圈并且防止产生足够大的电压脉冲以对所选择的气缸的火花塞起火。 当点打开并且测试电路提供低电阻路径时，测量流过线圈的初级电流。 选通脉冲在所选择的气缸的“打开”时间和下一个气缸的“打开”时间之间大致中途地结束，使得分配器的转子位于分配器端子之间。 当门控脉冲结束时，测试电路变为非导通状态，并且由于点尚未闭合，所以初级电流被中断，并且在点火线圈的次级中感应出高电压次级测试信号。 然而，由于转子位于分配器端子之间，因此该测试信号不能点燃火花塞，并且由于初级电流的减小的幅度防止了从转子到分配器端子的转弧。 测量的初级电流和测量的高压次级测试信号用于提供点火线圈状态的指示。
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公开(公告)号：US4476531A
公开(公告)日：1984-10-09
申请号：US327734
申请日：1981-12-04
CPC分类号： F02P17/08
摘要： An engine analyzer for an internal combustion engine includes an analog-to-digital (A/D) converter which digitizes an analog electrical input waveform representing, for example, a secondary or primary voltage waveform of the ignition coil of the internal combustion engine. The digitized input waveform is stored in the form of digital data in a data memory. Upon request by the operator of the apparatus, a microprocessor selects digital data stored, and supplies that digital data to a display, which displays a visual representation of the waveform based upon the selected digital data.
摘要翻译： 用于内燃机的发动机分析器包括将表示例如内燃机的点火线圈的二次或一次电压波形的模拟电输入波形数字化的模数（A / D）转换器。 数字化输入波形以数字数据的形式存储在数据存储器中。 根据设备的操作者的要求，微处理器选择存储的数字数据，并将该数字数据提供给显示器，该显示器基于所选择的数字数据显示波形的视觉表示。
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公开(公告)号：US4472779A
公开(公告)日：1984-09-18
申请号：US327497
申请日：1981-12-04
摘要： Engine timing apparatus includes a timing light, cylinder clock signal circuitry, a cylinder counter, a cylinder comparator, first, second and third timers, a trigger pulse generator, operator control buttons, and a computer. The first timer measures a first time period between firing of the No. 1 cylinder, and the second timer measures a second time period between firing of the cylinder preceding No. 1 and the firing of the No. 1 cylinder. The computer derives from the first and second time periods a first digital value which represents the angular degrees from firing of the cylinder preceding No. 1 to firing of the No. 1 cylinder. Each time the comparator output signal is produced, the third timer initiates an adjustable time period, and the trigger pulse generator triggers the timing light at the end of the adjustable time period. The operator control buttons include buttons which cause a second digital value to be increased or decreased. The computer uses the first and second digital values and the measured first time period to control the adjustable time period of the third timer. When the operator has varied the second digital value so that the flashing of the timing light corresponds to top dead center of the No. 1 cylinder, the computer causes an angular value to be displayed which represents the angular relationship between firing of the igniter and top dead center of the No. 1 cylinder.
摘要翻译： 发动机定时装置包括定时灯，气缸时钟信号电路，气缸计数器，气缸比较器，第一，第二和第三定时器，触发脉冲发生器，操作者控制按钮和计算机。 第一定时器测量第一缸的点火之间的第一时间段，并且第二计时器测量在1号缸之前的气缸和第1缸的点火之间的第二时间段。 计算机从第一和第二时间段得到第一数字值，其表示从1号筒前面的气缸到1号气缸的点火的角度。 每当产生比较器输出信号时，第三定时器启动可调整的时间周期，并且触发脉冲发生器在可调整时间段结束时触发定时灯。 操作者控制按钮包括使第二数字值增加或减小的按钮。 计算机使用第一和第二数字值和测量的第一时间段来控制第三定时器的可调整时间段。 当操作者改变第二数字值使得定时灯的闪烁对应于1号气缸的上止点时，计算机产生一个角度值，其表示点火器和顶部的点火之间的角度关系 1号缸的死心。
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公开(公告)号：US4502324A
公开(公告)日：1985-03-05
申请号：US441425
申请日：1982-11-15
CPC分类号： G01M15/044
摘要： An engine analyzer tests operation of a multicylinder internal combustion engine by disabling selected cylinders. The apparatus includes a semiconductor switch connected in parallel with the ignition points (or solid state circuit interrupter) of the engine's ignition system. A cylinder clock signal is derived from the engine, and exhibits a first signal transition each time the points open. A cylinder counter maintains a cylinder count identifying the current cylinder, and a period measurement timer measures the time period for each cylinder based upon the time between each first signal transition of the cylinder clock signal. The previously measured time periods of the cylinders are stored in a table which is constantly updated. Each time a first signal transition occurs, a programmable time delay timer is loaded with an input value which is based upon a previously measured time period for the current cylinder. The time delay is shorter than the previously measured time period, so that the time delay ends before the first signal transition corresponding to the next cylinder in sequence. An enable/disable table is stored which indicates which cylinders are to be disabled. If the next cylinder in the sequence is to be disabled, the switch is switched from a nonconductive to a conductive state so as to short circuit the points to prevent generation of a secondary voltage for the ignitier corresponding to the next cylinder.
摘要翻译： 发动机分析仪通过禁用所选气缸来测试多缸内燃机的运行。 该装置包括与发动机的点火系统的点火点（或固态电路断路器）并联连接的半导体开关。 气缸时钟信号来自发动机，并且每当点打开时都呈现第一信号转换。 气缸计数器保持识别当前气缸的气缸数，并且周期测量计时器基于气缸时钟信号的每个第一信号转换之间的时间来测量每个气缸的时间段。 先前测量的气缸的时间段存储在不断更新的表中。 每当发生第一个信号转换时，可编程时间延迟定时器都将加载一个输入值，该输入值基于以前测量的当前气缸的时间周期。 时间延迟比先前测量的时间段短，因此时间延迟在与下一个气缸顺序相对应的第一个信号转换之前结束。 存储启用/禁用表，指示要禁用哪些气缸。 如果顺序中的下一个气缸被禁用，则开关从非导通状态切换到导通状态，以便使点短路，以防止对应于下一个气缸的点火器产生次级电压。
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公开(公告)号：US5004979A
公开(公告)日：1991-04-02
申请号：US496103
申请日：1990-03-16
IPC分类号： G01P3/481
CPC分类号： G01P3/481
摘要： A signal representing the RPM of an internal combustion engine is produced by a signal processor connected to the battery of the vehicle. The signal processor derives an electrical signal from the battery which contains signal components produced by operation of the vehicle ignition system, as well as components from a multitude of other sources such as the voltage regulator, fans, air conditioning and other electrical systems of the vehicle. The signal processor filters and signal processes the signal derived from the vehicle battery to produce a signal having a frequency which is related to the RPM of the engine.
摘要翻译： 表示内燃机的RPM的信号由连接到车辆的电池的信号处理器产生。 信号处理器从电池得到包含由车辆点火系统的操作产生的信号分量的电信号，以及来自诸如电压调节器，风扇，空调和车辆的其它电气系统的众多其他来源的组件 。 信号处理器对来自车辆电池的信号进行滤波和信号处理，以产生具有与发动机的RPM相关的频率的信号。
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公开(公告)号：US4000456A
公开(公告)日：1976-12-28
申请号：US495331
申请日：1974-08-07
CPC分类号： F02P17/02 , G01R13/00 , G01R13/208
摘要： Engine diagnostic apparatus for displaying on a cathode ray tube the voltage conditions existing at each of the spark plugs which apparatus is intended for use with ignition systems in which the voltage pulses applied to the spark plugs are of such short duration that a cathode ray tube will not properly respond to the changes of voltage. The apparatus is effective to successively charge a capacitor to a value corresponding to the value of each voltage pulse and the voltages across this capacitor are used to control the vertical defection of the cathode ray tube. At the end of a first period of time following a voltage pulse, the capacitor is shorted. The capacitor is maintained shorted for a longer period of time less than the time between successive pulses so as to avoid undesired charging of the capacitor as a result of transient conditions. The time constant of the charging circuit for the capacitor is less than the duration of the voltage peak so that the capacitor is substantially fully charged during the voltage peak.
摘要翻译： 用于在阴极射线管上显示存在于每个火花塞上的电压条件的发动机诊断装置，该装置旨在与点火系统一起使用，其中施加到火花塞的电压脉冲的持续时间短，使得阴极射线管将 不能正确响应电压的变化。 该装置有效地将电容器连续地充电到与每个电压脉冲的值相对应的值，并且使用该电容器两端的电压来控制阴极射线管的垂直偏离。 在电压脉冲后的第一段时间结束时，电容器短路。 电容器被维持短于连续脉冲之间的时间较长的时间段，以避免由于瞬态条件导致电容器的不期望的充电。 电容器的充电电路的时间常数小于电压峰值的持续时间，使得电容器在电压峰值期间基本上完全充电。
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公开(公告)号：US4423378A
公开(公告)日：1983-12-27
申请号：US327586
申请日：1981-12-04
申请人： Joseph A. Marino , Sydney J. Roth
发明人： Joseph A. Marino , Sydney J. Roth
CPC分类号： G01R31/362 , G01R31/3648 , G01R31/3662 , G01R31/006 , Y10S320/21
摘要： The condition of a storage battery of an internal combustion engine powered vehicle is tested automatically, and an indication of battery condition is provided to the service technician. The battery testing apparatus is connected to the positive (+) and negative (-) terminals of the battery to measure battery voltage under several different conditions. In particular, the battery testing apparatus measures battery voltage under open circuit conditions, while subjecting the battery to a predetermined AC load, and while subjecting the battery to a predetermined DC load. The battery testing apparatus also includes a temperature probe which measures the temperature of the battery. A digital computer control utilizes the measured open circuit voltage, the measured voltage under a predetermined DC load, and the measured voltage under an AC load (which represents dynamic internal resistance of the battery) and the temperature measurement to provide an indication of battery condition based upon these measured parameters and stored data for normal characteristics of the battery under test.
摘要翻译： 自动测试内燃机动力车辆的蓄电池的状态，并向维修技术人员提供电池状况指示。 电池测试装置连接到电池的正（+）和负（ - ）端子，以在几种不同的条件下测量电池电压。 特别地，电池测试装置在开路条件下测量电池电压，同时对电池进行预定的AC负载，同时对电池进行预定的DC负载。 电池测试装置还包括测量电池温度的温度探头。 数字计算机控制使用测量的开路电压，在预定直流负载下的测量电压，以及在AC负载（其表示电池的动态内部电阻）下的测量电压和温度测量以提供基于电池状态的指示 这些测量参数和存储的数据用于正在测试的电池的正常特性。
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公开(公告)号：US4594789A
公开(公告)日：1986-06-17
申请号：US725759
申请日：1985-04-22
申请人： Joseph A. Marino , Peter A. Puetz , Michael J. Kling , Curtis A. Finn , John C. Pendell , Michael C. Crawford
发明人： Joseph A. Marino , Peter A. Puetz , Michael J. Kling , Curtis A. Finn , John C. Pendell , Michael C. Crawford
IPC分类号： G01B11/275
CPC分类号： G01B11/2755 , G01B2210/283
摘要： A wheel alignment system uses head units attached to each of the four wheels. The front head units contain photodetector arrays which view across the front of the vehicle and to the rear. The rear units carry photodetector arrays which look forward. Each photodetector array views a target on one of the other head units. A microcomputer in each head unit determines an angular value based upon the position of the target image on the photodetector array. The angle values determined by the microcomputers of the individual head units are supplied to a master computer in a main console which determines individual toe angles with respect to a tread centerline for either the front two wheels or for all four wheels. The master computer controls a display at the main console, as well as a remote display to guide the mechanic in making alignment adjustments.
摘要翻译： 轮对准系统使用附接到四个轮中的每一个的头单元。 前头单元包含光电检测器阵列，其观察车辆前方和后方。 后面的单元携带着望远镜的光电探测器阵列。 每个光电检测器阵列在另一个头单元中的一个上观察目标。 每个头单元中的微计算机基于光电检测器阵列上的目标图像的位置来确定角度值。 由各个头部单元的微型计算机确定的角度值被提供给主控制台中的主计算机，该主控制器相对于前两个车轮或所有四个车轮的胎面中心线确定个体脚趾角度。 主计算机控制主控制台上的显示器以及远程显示器，以指导技工进行对齐调整。
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公开(公告)号：US4399407A
公开(公告)日：1983-08-16
申请号：US327511
申请日：1981-12-04
申请人： Michael J. Kling , Joseph A. Marino
发明人： Michael J. Kling , Joseph A. Marino
CPC分类号： F02P17/08
摘要： An engine analyzer for an internal combustion engine includes an analog-to-digital (A/D) converter which digitizes an analog electrical input waveform representing, for example, a secondary or primary voltage waveform of the ignition coil of the internal combustion engine. The digitized input waveform is stored in the form of digital data in a data mamory. Upon request by the operator of the apparatus, a microprocessor selects digital data stored, and supplies that digital data to a display, which displays a visual representation of the waveform based upon the selected digital data. The engine analyzer apparatus produces a constant width waveform regardless of engine RPM, by determining the period of the waveform to be stored, and then varying the sample rate at which the A/D converter samples the analog waveform and converts the sampled waveform to digital data. As a result, the number of data samples, and thus the width of the displayed waveform, is constant.
摘要翻译： 用于内燃机的发动机分析器包括将表示例如内燃机的点火线圈的二次或一次电压波形的模拟电输入波形数字化的模数（A / D）转换器。 数字化输入波形以数字数据的形式存储在数据模式中。 根据设备的操作者的要求，微处理器选择存储的数字数据，并将该数字数据提供给显示器，该显示器基于所选择的数字数据显示波形的视觉表示。 发动机分析仪装置通过确定要存储的波形的周期，然后改变采样率来产生恒定宽度的波形，而不管发动机转速如何，A / D转换器对模拟波形进行取样并将采样波形转换成数字数据 。 结果，数据样本的数量以及因此显示的波形的宽度是恒定的。
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公开(公告)号：US4467323A
公开(公告)日：1984-08-21
申请号：US327732
申请日：1981-12-04
申请人： Michael J. Kling , Joseph A. Marino
发明人： Michael J. Kling , Joseph A. Marino
摘要： An engine analyzer for an internal combustion engine includes circuitry, under the control of a microprocessor, which senses parameters of operation of the internal combustion engine and supplies digital signals indicative of those sensed parameters. A raster scan cathode ray tube (CRT) display is controlled by the microprocessor to display a simulation of an analog meter having a pointer or needle which moves as a function of the digital signals. When an analog display, such as a tachometer, is selected, the microprocessor controls the raster scan CRT to display a visual depiction of a meter having the appropriate range of values and having a needle which moves according to the measurements made by the system. The microprocessor automatically changes the scale of the simulated meter as appropriate without operator intervention. When operation within a predetermined range of values is required, the microprocessor causes the raster scan CRT display to produce a shaded area representing the range within which the needle should remain.
摘要翻译： 用于内燃机的发动机分析器包括在微处理器的控制下的电路，其感测内燃机的操作参数并提供指示那些感测参数的数字信号。 光栅扫描阴极射线管（CRT）显示器由微处理器控制，以显示具有作为数字信号的函数而移动的指针或针头的模拟仪表的模拟。 当选择诸如转速计的模拟显示器时，微处理器控制光栅扫描CRT以显示具有适当值范围的仪表的视觉描绘，并具有根据由系统进行的测量而移动的针。 微处理器在没有操作员干预的情况下自动更改模拟仪表的尺寸。 当需要在预定值范围内进行操作时，微处理器使得光栅扫描CRT显示器产生一个阴影区域，该阴影区域表示该针头保持的范围。
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