-
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。
-
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。
-
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。
-
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。
-
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。
-
公开(公告)号：US5497655A
公开(公告)日：1996-03-12
申请号：US418225
申请日：1995-04-06
申请人： Thomas S. Gee , Paul F. Smith , Michael J. Cullen
发明人： Thomas S. Gee , Paul F. Smith , Michael J. Cullen
CPC分类号： F02D41/1494
摘要： A method of controlling the operation of heaters for an exhaust gas oxygen sensor as function exhaust gas temperature as compared to a first exhaust gas temperature to turn on the heaters and a second exhaust gas oxygen sensor temperature to turn off the heaters.
摘要翻译： 一种将排气氧传感器的加热器的操作控制为与第一废气温度相比作为功率排气温度来打开加热器的方法和第二排气氧传感器温度以关闭加热器。
-
公开(公告)号：US5605040A
公开(公告)日：1997-02-25
申请号：US412663
申请日：1995-03-29
申请人： Michael J. Cullen , Paul F. Smith , Thomas S. Gee
发明人： Michael J. Cullen , Paul F. Smith , Thomas S. Gee
CPC分类号： F02D41/1494 , F02D41/1401 , F02D41/1441 , F01N2240/02 , F01N2410/00 , F01N3/20
摘要： A method of inferring the temperature of a heated exhaust gas oxygen sensor is used in the control of the operation of an electronic engine control for an internal combustion engine.
摘要翻译： 用于推断加热废气氧传感器的温度的方法用于控制内燃机的电子发动机控制的操作。
-
公开(公告)号：US5379635A
公开(公告)日：1995-01-10
申请号：US161029
申请日：1993-12-03
申请人： Thomas S. Gee , Paul F. Smith
发明人： Thomas S. Gee , Paul F. Smith
IPC分类号： G01N27/409 , F02D41/14 , G01N27/26 , G01M19/00
CPC分类号： F02D41/1495 , F02D2041/1432
摘要： A system for detecting a fault in an exhaust gas oxygen (EGO) sensor includes generating a first signal with a first voltage if the EGO sensor output signal is approaching an unacceptable voltage and a second voltage if the EGO sensor output signal has an unacceptable voltage. The system further includes setting a first flag if the first signal has the first voltage and a second flag, indicating an EGO sensor fault, if the first signal has the second voltage and the first flag is set.
摘要翻译： 用于检测排气氧（EGO）传感器中的故障的系统包括：如果EGO传感器输出信号接近不可接受的电压，则产生具有第一电压的第一信号，如果EGO传感器输出信号具有不可接受的电压，则产生第二信号。 如果第一信号具有第二电压并且第一标志被设置，则系统还包括如果第一信号具有第一电压和第二标志，指示EGO传感器故障，则设置第一标志。
-
公开(公告)号：US5537816A
公开(公告)日：1996-07-23
申请号：US398835
申请日：1995-03-06
IPC分类号： F02D41/14
CPC分类号： F02D41/1441 , F02D41/1456
摘要： An engine air/fuel controller (12) is responsive to a two-state exhaust gas oxygen sensor (16) positioned upstream of a three-way catalytic converter (20) and a proportional exhaust gas oxygen sensor (24) positioned downstream of the catalytic converter. A base fuel signal is trimmed by a feedback variable derived by integrating (402-428) the upstream (16) sensor output. The feedback variable is biased towards leaner air/fuel ratios when a distribution of the downstream sensor output amplitudes has a peak value indicating a rich air/fuel ratio. And the feedback variable is biased towards richer air/fuel ratios when the downstream sensor output distribution has a peak value indicating a lean air/fuel ratio (320-396).
摘要翻译： 发动机空气/燃料控制器（12）响应位于三元催化转化器（20）上游的二态排气氧传感器（16）和位于催化剂下游的比例排气氧传感器（24） 转换器。 基本燃料信号通过积分（402-428）上游（16）传感器输出得到的反馈变量进行修整。 当下游传感器输出振幅的分布具有表示浓空气/燃料比的峰值时，反馈变量偏向较稀的空气/燃料比。 并且当下游传感器输出分布具有指示贫空气/燃料比（320-396）的峰值时，反馈变量偏向更丰富的空气/燃料比。
-
-
-
-
-
-
-
-
搜索结果
9 条记录 (耗时 0.021 秒)
