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51. 发明授权

US6062019A Method for controlling the fuel/air ratio of an internal combustion engine 失效
标题翻译：用于控制内燃机的燃料/空气比的方法
公开(公告)号：US6062019A
公开(公告)日：2000-05-16
申请号：US10208
申请日：1998-01-21
申请人： Ulrich Staufenberg
发明人： Ulrich Staufenberg
IPC分类号： F02D41/14 , F01N3/00
CPC分类号： F02D41/1441 , F02D41/1477 , F02D41/1456
摘要： A method of controlling the fuel/air ratio of an internal combustion engine in which the output signal of a first lambda probe which is arranged in the exhaust gas passage in front of a catalytic converter of the internal combustion engine is fed to a controller which has a proportional-and-integral (PI) characteristic. The controller gives off a setting variable for the fuel/air ratio. A further signal which is obtained from the output signal of a second lambda probe arranged behind the catalytic converter is fed to the controller and acts on the control circuit of the first lambda probe.In order to permit an accurate, adaptable control, the proportional portion of the output signal of the control circuit of the first lambda probe is modified as a function of the output signal of the second lambda probe.
摘要翻译：一种控制内燃机的燃料/空气比的方法，其中布置在内燃机的催化转化器前面的排气通道中的第一λ探测器的输出信号被馈送到具有比例和积分（PI）特性。控制器发出燃油/空气比的设定值。从布置在催化转化器后面的第二λ探针的输出信号获得的另一信号被馈送到控制器并作用在第一λ探针的控制电路上。为了允许精确的适应性控制，第一λ探针的控制电路的输出信号的比例部分被修改为第二λ探针的输出信号的函数。

52. 发明授权

US6055971A Plateau linearization curves with proportional/integral/derivative control theory 失效
标题翻译：具有比例/积分/微分控制理论的高原线性化曲线
公开(公告)号：US6055971A
公开(公告)日：2000-05-02
申请号：US119906
申请日：1998-07-21
申请人： Brian E. Beechie , Kenneth P. DeGroot
发明人： Brian E. Beechie , Kenneth P. DeGroot
IPC分类号： F02D31/00 , F02D41/14 , G05B11/32 , F02M25/00
CPC分类号： F02D41/1477 , F02D31/003 , F02D41/14 , G05B11/32
摘要： A proportional/integral/derivative control system is provided for controlling the operating parameters of a feedback system according to the difference between a measured value from a component of the system and a target set point. The control system employs a linearization curve having a plateau portion near the target set point. As the measured value approaches the target set point, smaller corrective measures are employed to minimize overshooting and fluctuations. Also, a range is established about the set point wherein no corrective measures are performed.
摘要翻译：提供比例/积分/微分控制系统，用于根据来自系统的部件的测量值与目标设定点之间的差异来控制反馈系统的操作参数。控制系统采用在目标设定点附近具有平台部分的线性化曲线。随着测量值接近目标设定点，采用较小的校正措施来最小化过冲和波动。另外，关于不进行校正措施的设定点建立范围。

53. 发明授权

US5797369A Air-fuel ratio control system having function of after-start lean-burn control for internal combustion engines 失效
标题翻译：具有内燃机的先启后稀燃控制功能的空燃比控制系统
公开(公告)号：US5797369A
公开(公告)日：1998-08-25
申请号：US910154
申请日：1997-08-13
申请人： Norio Suzuki , Koichi Fujimori , Yusuke Hasegawa , Hiroki Munakata , Shusuke Akazaki , Masuhiro Yoshizaki
发明人： Norio Suzuki , Koichi Fujimori , Yusuke Hasegawa , Hiroki Munakata , Shusuke Akazaki , Masuhiro Yoshizaki
IPC分类号： F02D41/00 , F02D41/02 , F02D41/06 , F02D41/14 , F02D41/34
CPC分类号： F02D41/1486 , F02D41/008 , F02D41/021 , F02D41/06 , F02D41/062 , F02D41/1402 , F02D41/1441 , F02D41/1475 , F02D41/1477 , F02D2041/1409 , F02D2041/1415 , F02D2041/1416 , F02D2041/1417 , F02D2041/1418 , F02D2041/142 , F02D2041/1426 , F02D2041/1431 , F02D2041/1433 , F02D41/0085 , F02D41/1456
摘要： There is provided an air-fuel ratio control system for an internal combustion engine installed on an automotive vehicle. The control system controls the air-fuel ratio of a mixture supplied to the engine to a value leaner than a stoichiometric air-fuel ratio immediately after the start of the engine. Operating conditions of the engine and/or operating conditions of the automotive vehicle is detected. Starting of the vehicle is predicted based on the detected operating conditions of the engine and/or the detected operating conditions of the automotive vehicle. The air-fuel ratio of the mixture supplied to the engine is changed to a richer value than the leaner value when the starting of the vehicle is predicted.
摘要翻译：提供了一种用于安装在机动车辆上的内燃机的空燃比控制系统。控制系统将供给发动机的混合物的空燃比控制在发动机启动之后的比理论空燃比更小的值。检测发动机的运转状况和/或机动车辆的运转状况。基于检测到的发动机的运行条件和/或检测到的机动车辆的运行状况来预测车辆的起动。当预测出车辆的起动时，供给发动机的混合物的空燃比被改变为比精度值更丰富的值。

54. 发明授权

US5794604A Air-fuel ratio control system having function of after-start lean-burn control for internal combustion engines 失效
公开(公告)号：US5794604A
公开(公告)日：1998-08-18
申请号：US910155
申请日：1997-08-13
申请人： Norio Suzuki , Koichi Fujimori , Yusuke Hasegawa , Hiroki Munakata , Shusuke Akazaki , Masuhiro Yoshizaki
发明人： Norio Suzuki , Koichi Fujimori , Yusuke Hasegawa , Hiroki Munakata , Shusuke Akazaki , Masuhiro Yoshizaki
IPC分类号： F02D41/00 , F02D41/02 , F02D41/06 , F02D41/14 , F02D41/34
CPC分类号： F02D41/1486 , F02D41/008 , F02D41/021 , F02D41/06 , F02D41/062 , F02D41/1402 , F02D41/1441 , F02D41/1475 , F02D41/1477 , F02D2041/1409 , F02D2041/1415 , F02D2041/1416 , F02D2041/1417 , F02D2041/1418 , F02D2041/142 , F02D2041/1426 , F02D2041/1431 , F02D2041/1433 , F02D41/0085 , F02D41/1456
摘要： There is provided an air-fuel ratio control system for an internal combustion engine installed on an automotive vehicle. The control system controls the air-fuel ratio of a mixture supplied to the engine to a value leaner than a stoichiometric air-fuel ratio immediately after the start of the engine. Operating conditions of the engine and/or operating conditions of the automotive vehicle is detected. Starting of the vehicle is predicted based on the detected operating conditions of the engine and/or the detected operating conditions of the automotive vehicle. The air-fuel ratio of the mixture supplied to the engine is changed to a richer value than the leaner value when the starting of the vehicle is predicted.

55. 发明授权

US5445136A Air-fuel ratio control apparatus for internal combustion engines 失效
标题翻译：用于内燃机的空燃比控制装置
公开(公告)号：US5445136A
公开(公告)日：1995-08-29
申请号：US248951
申请日：1994-05-25
申请人： Yukihiro Yamashita , Toshihiro Suzumura
发明人： Yukihiro Yamashita , Toshihiro Suzumura
IPC分类号： F02D41/14
CPC分类号： F02D41/1477 , F02D41/1401 , F02D41/1473 , F02D2041/1409 , F02D2041/1415 , F02D2041/142 , F02D2041/1426 , F02D2041/1433 , F02D41/1456
摘要： For stable air-fuel ratio control without hunting, an output condition of an air-fuel ratio sensor is monitored to decide whether or not a modern or advanced control using a dynamic model may be performed. The appropriateness of using the dynamic model may be determined by monitoring whether the output value of an air-fuel ratio sensor exists in a predetermined range or whether the air-fuel ratio sensor is maintained stably in an air-fuel ratio detectable state. When the sensor output condition is out of the predetermined range suitable for the modern control, an optimum feedback gain for performing the modern control is switched over to a lowered gain or the modern control is switched over into normal feedback control by proportional-and-integral control. By this control mode switch-over, most appropriate air-fuel ratio feedback control may be performed.
摘要翻译：为了在不进行狩猎的情况下进行稳定的空燃比控制，监视空燃比传感器的输出状态，以决定是否可以执行使用动态模型的现代或高级控制。可以通过监视空燃比传感器的输出值是否存在于预定范围内，或者是否将空燃比传感器稳定地保持在空燃比可检测状态来确定使用动态模型的适当性。当传感器输出条件超出适用于现代控制的预定范围时，用于执行现代控制的最佳反馈增益被切换到较低的增益，或者通过比例和积分将现代控制切换到正常的反馈控制控制。通过该控制模式切换，可以执行最合适的空燃比反馈控制。

56. 发明授权

US5406789A Air-fuel ratio control system for internal combustion engines 失效
标题翻译：内燃机空燃比控制系统
公开(公告)号：US5406789A
公开(公告)日：1995-04-18
申请号：US138469
申请日：1993-10-15
申请人： Tsuyoshi Takizawa , Hiroshi Ito , Yoichi Iwata , Toshihiko Sato , Naoki Iida , Takayoshi Nakayama
发明人： Tsuyoshi Takizawa , Hiroshi Ito , Yoichi Iwata , Toshihiko Sato , Naoki Iida , Takayoshi Nakayama
IPC分类号： F01N3/20 , F01N11/00 , F02D41/14
CPC分类号： F01N11/007 , F02D41/1441 , F02D41/1477 , F02D41/1486 , F01N2550/02 , F01N2900/0422 , F02D41/1456 , Y02T10/47
摘要： An air-fuel ratio control system for an internal combustion engine having a catalytic converter arranged in the exhaust system, and an air-fuel ratio sensor arranged upstream of the catalytic converter calculates an air-fuel ratio correction amount by means of proportional control and integral control based on an output from the air-fuel ratio sensor, and controls an air-fuel ratio of a mixture supplied to the engine, based on the air-fuel ratio correction amount. A control frequency at which the air-fuel ratio control is carried out is increased when deterioration of the catalytic converter is detected.
摘要翻译：一种用于内燃机的空燃比控制系统，其具有布置在排气系统中的催化转化器，并且布置在催化转化器上游的空燃比传感器通过比例控制和积分计算空燃比校正量基于空燃比传感器的输出进行控制，并且基于空燃比校正量来控制供给发动机的混合物的空燃比。当检测到催化转化器的劣化时，进行空燃比控制的控制频率增加。

57. 发明授权

US5343701A Air-fuel ratio control system for internal combustion engine 失效
标题翻译：内燃机空燃比控制系统
公开(公告)号：US5343701A
公开(公告)日：1994-09-06
申请号：US949689
申请日：1992-09-23
申请人： Hisayo Douta , Masumi Kinugawa , Atsushi Suzuki
发明人： Hisayo Douta , Masumi Kinugawa , Atsushi Suzuki
IPC分类号： F02D41/10 , F02D41/14 , F02D41/16
CPC分类号： F02D41/1486 , F02D41/1477 , F02D41/2445 , F02D41/2454 , F02D41/2474
摘要： An air-fuel ratio control system for an internal combustion engine utilizes a pre-stored standard relation between an air-fuel ratio sensor signal and a standard air-fuel ratio indicative value for deriving the standard air-fuel ratio indicative value based on the sensor signal. The system further utilizes a pre-stored modified relationship between the standard air-fuel ratio indicative value and a for-control air-fuel ratio indicative value for deriving a for-control air-fuel ratio indicative value based on the derived standard air-fuel ratio indicative value. In the modified relationship, the for-control air-fuel ratio indicative value varies with respect to a corresponding variation of the standard air-fuel ratio indicative value within a given range across the standard air-fuel ratio indicative value representing a stoichiometric air-fuel ratio.
摘要翻译：用于内燃机的空燃比控制系统利用空燃比传感器信号和标准空燃比指示值之间的预先存储的标准关系，以基于传感器得出标准空燃比指示值信号。该系统进一步利用标准空燃比指示值和用于控制空燃比指示值之间的预先存储的改进关系，用于基于导出的标准空气燃料导出控制空燃比指示值比率指标值。在修改关系中，控制空燃比指示值相对于表示理论空燃比的标准空燃比指示值的给定范围内的标准空燃比指示值的相应变化而变化比。

58. 发明授权

US5282360A Post-catalyst feedback control 失效
标题翻译：催化后反馈控制
公开(公告)号：US5282360A
公开(公告)日：1994-02-01
申请号：US968937
申请日：1992-10-30
申请人： Douglas R. Hamburg , Thomas R. Culbertson , Judith M. Curran
发明人： Douglas R. Hamburg , Thomas R. Culbertson , Judith M. Curran
IPC分类号： F02D41/14 , F02M7/12 , F02B3/00
CPC分类号： F02D41/1441 , F02D41/1477 , F02D41/1489
摘要： An exhaust gas oxygen sensor is used to control the air/fuel ratio of an internal combustion engine in combination with an electronic engine control. The exhaust gas oxygen sensor is positioned in the exhaust stream flow from the engine. The electronic engine control utilizes different air/fuel ratio feedback strategies depending upon whether the signal output from the exhaust gas oxygen sensor is saturated indicating a rich air/fuel ratio, saturated indicating a lean air/fuel ratio or operating in a linear region.
摘要翻译：废气氧传感器用于与电子发动机控制相结合地控制内燃机的空燃比。废气氧传感器位于来自发动机的排气流中。电子发动机控制利用不同的空气/燃料比反馈策略，取决于从排气氧传感器输出的信号是否饱和，表示富空燃比，饱和表示稀空燃比或在线性区域运行。

59. 发明授权

US4739740A Internal combustion engine air-fuel ratio feedback control method functioning to compensate for aging change in output characteristic of exhaust gas concentration sensor 失效
标题翻译：内燃机空燃比反馈控制方法，用于补偿排气浓度传感器输出特性的老化变化
公开(公告)号：US4739740A
公开(公告)日：1988-04-26
申请号：US57049
申请日：1987-06-01
申请人： Kenichi Ohkawara , Eiji Kishida , Takeo Kiuchi , Eitetsu Akiyama
发明人： Kenichi Ohkawara , Eiji Kishida , Takeo Kiuchi , Eitetsu Akiyama
IPC分类号： F02D41/14
CPC分类号： F02D41/1474 , F02D41/1477
摘要： A method of feedback-controlling the air-fuel ratio of a mixture, supplied to an internal combustion engine, by at least one of proportional control and integral control in dependence upon the results of a comparison between the output of an exhaust gas concentration sensor and a predetermined reference value. The method includes obtaining the ratio of a first time period required for an output value from the exhaust gas concentration sensor to make a transition from a peak value on a rich side to a predetermined reference value with respect to the predetermined reference value, and a second time period required for the output value to make a transition from a peak value on a lean side to the predetermined reference value with respect to the predetermined reference value, and altering, in dependence upon the ratio obtained, at least one predetermined control factor applied to control of the air-fuel ratio.
摘要翻译：根据排气浓度传感器的输出与排气浓度传感器的输出比较的结果，通过比例控制和积分控制中的至少一个反馈控制供给内燃机的混合物的空燃比的方法预定的参考值。该方法包括获得来自排气浓度传感器的输出值所需的第一时间段与从丰富侧的峰值相对于预定参考值转换到预定参考值的比率，第二时间段输出值相对于预定参考值从偏斜侧的峰值转换到预定参考值所需的时间周期，并且根据获得的比率改变应用于控制空燃比。

60. 发明授权

US09995233B2 Control device for internal combustion engine 有权
公开(公告)号：US09995233B2
公开(公告)日：2018-06-12
申请号：US14763592
申请日：2013-01-29
申请人： Toyota Jidosha Kabushiki Kaisha
发明人： Takanori Sasaki , Go Hayashita , Yuji Miyoshi
IPC分类号： F01N3/00 , F02D41/14 , F01N3/22 , G01N27/41 , F02D41/02
CPC分类号： F02D41/1444 , F01N3/225 , F01N2900/0402 , F01N2900/0416 , F02D41/0295 , F02D41/1402 , F02D41/1439 , F02D41/1454 , F02D41/1456 , F02D41/1473 , F02D41/1475 , F02D41/1477 , F02D2041/1422 , F02D2200/0814 , G01N27/41
摘要： A control device for an internal combustion engine, equipped with: an exhaust purification catalyst provided in the exhaust passage of the internal combustion engine and capable of absorbing oxygen; a downstream air-fuel ratio sensor provided downstream from the exhaust purification catalyst in the direction of the exhaust flow; and an engine control device that controls the internal combustion engine in response to the output from the downstream air-fuel ratio sensor. The downstream air-fuel ratio sensor is configured such that the applied voltage for which the output current is zero changes in response to the exhaust air-fuel ratio, and such that when the exhaust air-fuel ratio equals the theoretical air-fuel ratio and the applied voltage in the downstream air-fuel ratio sensor is increased, the output current increases in conjunction therewith. When the air-fuel ratio of the exhaust gas is detected by the downstream air-fuel ratio sensor, the applied voltage in the downstream air-fuel ratio sensor is fixed at a constant voltage, with this constant voltage being a voltage for which the output current is zero when the exhaust air-fuel ratio is a predetermined air-fuel ratio that is leaner than the theoretical air-fuel ratio.

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