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公开(公告)号：US5390650A
公开(公告)日：1995-02-21
申请号：US31408
申请日：1993-03-15
申请人： Thomas S. Gee , Thomas A. Schubert , Paul F. Smith
发明人： Thomas S. Gee , Thomas A. Schubert , Paul F. Smith
CPC分类号： F02D41/1443 , F02D41/0082 , F02D41/1495 , F02D41/2458
摘要： Air/fuel ratio in an internal combustion engine is controlled so as to test the operation of an exhaust gas oxygen sensor. The engine is divided into two banks, each bank including an intake bank of cylinders, an exhaust path, and an exhaust gas oxygen sensor in the exhaust path. Air/fuel ratio control signals are used in connection with each of the two banks, the control signals being 180.degree. out of phase with each other.
摘要翻译： 控制内燃机的空气/燃料比，以测试排气氧传感器的运转。 发动机分为两组，每排包括排气通道中的一个气缸进气组，排气通道和一个排气氧传感器。 空气/燃料比控制信号与两个组中的每一个组合使用，控制信号彼此相差180度。
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公开(公告)号：US5325711A
公开(公告)日：1994-07-05
申请号：US88296
申请日：1993-07-06
CPC分类号： F02D41/1495 , F02D41/2458 , F02D41/2474
摘要： Method, for controlling fuel supply to an internal combustion engine utilizing a modulated air-fuel signal having a modified square-wave waveform, of monitoring operation of an oxygen sensor for sensing engine exhaust gas oxygen level. The method includes generating the modulated air-fuel signal having the modified square-wave waveform designed to produce a particular engine exhaust response for interrogating the oxygen sensor, and operating the engine based on the modulated air-fuel signal. The oxygen sensor produces an associated output signal in response to sensed exhaust gas oxygen levels. The method also includes processing the output signal of the oxygen sensor associated with the particular engine response so as to determine the operating condition of the oxygen sensor and to verify acceptable test conditions.
摘要翻译： 用于利用具有改进的方波波形的调制空气燃料信号来控制对内燃机的燃料供给的方法，监测用于感测发动机废气氧气水平的氧传感器的操作。 该方法包括生成具有修改的方波波形的经调制的空气 - 燃料信号，该波形被设计成产生用于询问氧传感器的特定的发动机排气响应，以及基于经调制的空气 - 燃料信号来操作发动机。 氧传感器响应于感测到的废气氧气水平产生相关联的输出信号。 该方法还包括处理与特定发动机响应相关联的氧传感器的输出信号，以便确定氧传感器的操作状态并验证可接受的测试条件。
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公开(公告)号：US5357791A
公开(公告)日：1994-10-25
申请号：US31407
申请日：1993-03-15
IPC分类号： G01N27/26 , F02D41/14 , G01N27/409 , G01M15/00
CPC分类号： F02D41/1495 , F02D41/1441
摘要： Functionality of the exhaust gas oxygen sensor is determined by continually monitoring the exhaust gas oxygen sensor voltage to determine both a peak rich voltage and peak lean voltage. Based on the information after some predetermined time period, a system determines whether rich air/fuel ratio excursions are required and lean air/fuel ratio excursions are required. If a rich air/fuel excursion is required, then there is a command to decrease the air/fuel ratio to make it rich until the peak rich voltage is greater than a predetermined threshold voltage. Analogously, if a lean excursion is required, then there is a command to have a lean air/fuel ratio excursion done until the peak lean voltage is less than a predetermined threshold. If a time out happened before the peak rich voltage was greater than the rich threshold or the peak lean voltage was less than the lean threshold, then there is a determination that there is a malfunction detected on the sensor/circuit.
摘要翻译： 废气氧传感器的功能通过连续监测废气氧传感器电压来确定峰值富电压和峰值电压。 基于某些预定时间段之后的信息，系统确定是否需要富空燃比偏移，并且需要贫空气/燃料比偏移。 如果需要丰富的空气/燃料偏移，则存在降低空气/燃料比以使其富集的命令，直到峰值富电压大于预定阈值电压。 类似地，如果需要精密偏移，则存在执行稀薄空气/燃料比偏移的命令，直到峰值稀薄电压小于预定阈值。 如果在峰值富电压大于富阈值或峰值电压低于稀阈值之前发生超时，则确定在传感器/电路上检测到故障。
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4.发明授权Method and apparatus for controlling ignition timing based on fuel-air composition during fuel excursions 失效用于在燃料偏移期间基于燃料 - 空气组成控制点火正时的方法和装置
公开(公告)号：US5383432A
公开(公告)日：1995-01-24
申请号：US088295
申请日：1993-07-06
CPC分类号： F02P5/045 , F02D37/02 , F02D41/1498 , F02D2200/1015
摘要： Method and apparatus for controlling ignition timing during alternating rich and lean fuel-air composition excursions for efficiency and for controlling torque fluctuations associated with the excursions. The method, for use in a vehicle having an internal combustion engine including an electronic fuel and spark control module, includes reducing spark advance instantaneously during a rich fuel-air excursion, and increasing spark advance during a lean fuel-air excursion. The amount of spark advance adjustment is preferably determined utilizing nonlinear functions which relate spark, torque ratios, and air-fuel ratios.
摘要翻译： 用于在交替的富和贫燃料 - 空气组合物偏移期间控制点火正时的方法和装置，用于效率和用于控制与偏移相关联的扭矩波动。 该方法用于具有包括电子燃料和火花控制模块的内燃机的车辆中，包括在丰富的燃料空气偏移期间瞬间减少火花提前，并且在贫燃料 - 空气偏移期间增加火花提前。 火花提前调节的量优选利用涉及火花，扭矩比和空燃比的非线性函数来确定。
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公开(公告)号：US5522250A
公开(公告)日：1996-06-04
申请号：US418227
申请日：1995-04-06
CPC分类号： F02D41/1495 , G01D18/00
摘要： An aged exhaust gas oxygen sensor (EGO) simulator is inserted between an exhaust gas oxygen sensor and an electronic control module for testing the response of fuel control and emission systems to various amounts of exhaust gas oxygen sensor aging/degrading. The sensor signal is input to a summing amplifier where a delay signal is added. Positive and negative summing amplifier outputs go through vernier and decade controls, which add delay, and then to a variable gain inverter. The difference signal is integrated and output to the summing amplifier as the delay signal and output to a ground offset control for shifting the waveform up and down before going out to the control module. The vernier and decade controls add delays to mimic an aged/degraded exhaust gas oxygen sensor.
摘要翻译： 在废气氧传感器和电子控制模块之间插入老化的废气氧传感器（EGO）模拟器，用于测试燃料控制和排放系统对不同量的废气氧传感器老化/退化的响应。 传感器信号被输入到加法延迟信号的加法放大器。 正和负相加放大器输出通过游标和十进制控制，这增加了延迟，然后到可变增益逆变器。 差分信号被积分并作为延迟信号输出到求和放大器，并输出到接地偏移控制器，用于在输出到控制模块之前上下移位波形。 游标和十年控制增加了模拟老化/降解废气氧传感器的延迟。
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公开(公告)号：US20080174417A1
公开(公告)日：2008-07-24
申请号：US12017751
申请日：2008-01-22
申请人： Thomas A. Schubert
发明人： Thomas A. Schubert
IPC分类号： G09F9/00
CPC分类号： G09G3/14 , G09G2320/0223 , G09G2380/10
摘要： Digital display type gauge for numerically displaying rapidly changing values, such as vehicle digital display type gauges for numerically displaying engine rotation speed or vehicle speed. Least significant digits of digital display are displayed according to predetermined ranges for rates of change of the respective digit.
摘要翻译： 用于数字显示快速变化值的数字显示型计量器，例如用于数字显示发动机转速或车辆速度的车辆数字显示型计量器。 按照相应数字变化率的预定范围显示数字显示的最低有效数字。
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公开(公告)号：US07230418B2
公开(公告)日：2007-06-12
申请号：US10892370
申请日：2004-07-16
申请人： Thomas A. Schubert
发明人： Thomas A. Schubert
IPC分类号： G01P3/44
摘要： A tachometer circuit includes a flutter reduction circuit and a tachometer. The tachometer circuit cancels pointer flutter in the tachometer without adversely affecting pointer response.
摘要翻译： 转速计电路包括颤振减速电路和转速计。 转速计电路消除转速计中的指针颤动，而不会不利地影响指针响应。
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公开(公告)号：US06384568B1
公开(公告)日：2002-05-07
申请号：US09721084
申请日：2000-11-22
申请人： Thomas A. Schubert
发明人： Thomas A. Schubert
IPC分类号： H02P7622
CPC分类号： H02P27/06
摘要： According to an aspect of the present invention, an induction motor driver includes a DC power supply having a selectively variable voltage. The driver also includes an inverter coupled to the DC power supply and coupleable to an induction motor, the inverter selectively actuateable to generate from the selectively variable voltage of the DC power supply a low-frequency series of square-shaped pulses, the series of square-shaped pulses having a frequency and each pulse having an amplitude related to the selectively variable voltage. The driver further includes a motor driver controller coupled to the inverter and the DC power supply, the motor driver controller including a first selectively variable signal source to provide a speed signal representative of a desired motor speed, an oscillator coupled to the selectively variable signal source to generate a control signal having a frequency representative of the speed signal, an inverter controller coupled to the oscillator and the inverter to selectively actuate the inverter to vary the frequency of the series of square-shaped pulses in direct relation to the frequency of the control signal, and a power supply controller coupled to the oscillator and the DC power supply to selectively vary the voltage of the power supply in direct relation to the frequency of the control signal.
摘要翻译： 根据本发明的一个方面，感应电动机驱动器包括具有选择性可变电压的直流电源。 驱动器还包括耦合到直流电源并耦合到感应电动机的逆变器，该逆变器可选择性地致动以从直流电源的选择性可变电压产生低频系列的正方形脉冲，该正方形系列 具有频率的每个脉冲，并且每个脉冲具有与选择性可变电压相关的振幅。 驱动器还包括耦合到逆变器和直流电源的电动机驱动器控制器，电动机驱动器控制器包括第一选择性可变信号源，以提供表示期望电动机速度的速度信号，耦合到选择性可变信号源的振荡器 以产生具有表示速度信号的频率的控制信号，反相器控制器耦合到振荡器和反相器以选择性地致动逆变器以改变与控制频率直接相关的一系列方形脉冲的频率 信号和耦合到振荡器和DC电源的电源控制器，以选择性地根据控制信号的频率改变电源的电压。
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