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1. 发明授权

US5588417A Engine air/fuel control with exhaust gas oxygen sensor heater control 失效
标题翻译：发动机空气/燃油控制与排气氧气传感器加热器控制
公开(公告)号：US5588417A
公开(公告)日：1996-12-31
申请号：US552047
申请日：1995-11-02
申请人： Allan J. Kotwicki , Jeffrey A. Doering , Michael P. Falandino
发明人： Allan J. Kotwicki , Jeffrey A. Doering , Michael P. Falandino
IPC分类号： F02D41/14 , F02P15/08
CPC分类号： F02D41/1494 , F02D41/1456
摘要： An engine air/fuel control system responsive to an electrically heated exhaust gas oxygen sensor. Electrical power is supplied to the sensor by a feedback control system responsive to peak-to-peak measurement in the sensor output. Peak-to-peak measurements are averaged over a predetermined number of sample times and the resulting average value compared to a deadband. When the average measurement is above, within, or below the deadband, electrical power to the heater is, respectively, reduced, held constant, or decreased.
摘要翻译：一种响应电加热排气氧传感器的发动机空气/燃料控制系统。电力通过响应于传感器输出中的峰 - 峰测量的反馈控制系统提供给传感器。在预定数量的采样时间内对峰 - 峰测量进行平均，并且与死区相比得到的平均值。当平均测量值在死区之上，之内或之下时，加热器的电功率分别降低，保持恒定或降低。

2. 发明授权

US5537816A Engine air/fuel control responsive to catalyst window locator 失效
标题翻译：响应于催化剂窗口定位器的发动机空气/燃料控制
公开(公告)号：US5537816A
公开(公告)日：1996-07-23
申请号：US398835
申请日：1995-03-06
申请人： Robert W. Ridgway , Michael P. Falandino , Thomas S. Gee
发明人： Robert W. Ridgway , Michael P. Falandino , Thomas S. Gee
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。

3. 发明授权

US5408980A Air/fuel control method with adaptive feedback actuation 失效
标题翻译：具有自适应反馈启动的空气/燃料控制方法
公开(公告)号：US5408980A
公开(公告)日：1995-04-25
申请号：US202145
申请日：1994-02-25
申请人： Jeffrey A. Doering , Allan J. Kotwicki , Michael P. Falandino
发明人： Jeffrey A. Doering , Allan J. Kotwicki , Michael P. Falandino
IPC分类号： F02D41/06 , F02D41/14
CPC分类号： F02D41/1479 , F02D41/068 , F02D41/2458 , F02D41/1456
摘要： An engine air/fuel control system includes an apparatus and method for adaptively setting an initialization period preceding closed loop fuel control. During the initialization period, fuel delivered to the engine is modulated by a periodic waveform. A high voltage signal associated with the high output state of an exhaust gas oxygen sensor and a low voltage signal associated with the low voltage state of the exhaust gas oxygen sensor are sampled. When the difference between these signals exceeds a preselected value, the initialization period is terminated and closed loop fuel control is actuated.
摘要翻译：发动机空气/燃料控制系统包括用于自适应地设定闭环燃料控制之前的初始化期间的装置和方法。在初始化期间，输送到发动机的燃料由周期波形调制。对与废气氧传感器的高输出状态相关联的高电压信号和与排气氧传感器的低电压状态相关联的低电压信号进行采样。当这些信号之间的差超过预选值时，初始化期间终止，闭环燃料控制被启动。

4. 发明授权

US5396875A Air/fuel control with adaptively learned reference 失效
标题翻译：具有自适应学习参考的空气/燃料控制
公开(公告)号：US5396875A
公开(公告)日：1995-03-14
申请号：US193592
申请日：1994-02-08
申请人： Allan J. Kotwicki , Jeffrey A. Doering , Michael P. Falandino
发明人： Allan J. Kotwicki , Jeffrey A. Doering , Michael P. Falandino
IPC分类号： G01N27/409 , F02D41/14 , F02D45/00 , G01N27/26
CPC分类号： F02D41/1479 , F02D41/2454 , F02D41/2474 , F02D41/1456
摘要： An engine air/fuel control system includes an apparatus and method for adaptively learning a reference voltage. Fuel delivered to the engine is trimmed by a feedback variable provided by integrating a two-state signal resulting from a comparison between the reference voltage and the exhaust gas oxygen sensor output. Each sample period of a microprocessor, a high voltage signal and low voltage signal are generated which track the outer envelope of the sensor signal. Calculation of a midpoint between high and low voltage signals provides the reference which instantaneously tracks the midpoint of the sensor signal.
摘要翻译：发动机空气/燃料控制系统包括用于自适应地学习参考电压的装置和方法。通过将参考电压与排气氧传感器输出之间的比较产生的双态信号进行积分提供的反馈变量来调节发送到发动机的燃料。产生微处理器的每个采样周期，高电压信号和低电压信号，跟踪传感器信号的外包络。计算高电压和低电压信号之间的中点提供了瞬时跟踪传感器信号中点的参考。

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