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公开(公告)号：US08818690B2
公开(公告)日：2014-08-26
申请号：US13174653
申请日：2011-06-30
CPC分类号： F02D41/1454 , F02D41/1402 , F02D41/1403 , F02D41/1441 , F02D2041/1409 , F02D2200/021
摘要： An air-fuel ratio control apparatus for an internal combustion engine includes an air-fuel ratio sensor having an output characteristic which is nonlinear with respect to the air-fuel ratio of exhaust gas. An output deviation converter is configured to convert an output deviation to a first predetermined value if an output value of the air-fuel ratio sensor is on a richer side of a predetermined target value and to a second predetermined value if the output value is on a leaner side of the target value. A control input calculator is configured to calculate a control input to feedback-control the output value of the air-fuel ratio sensor such that the output deviation converted by the output deviation converter is to be zero. An air-fuel ratio controller is configured to control the air-fuel ratio of exhaust gas using the control input calculated by the control input calculator.
摘要翻译： 用于内燃机的空燃比控制装置包括具有相对于排气的空燃比为非线性的输出特性的空燃比传感器。 如果空燃比传感器的输出值处于预定目标值的较浓侧，则输出偏差转换器被配置为将输出偏差转换为第一预定值，并且如果输出值为 目标价值的一方较瘦。 控制输入计算器被配置为计算控制输入以反馈控制空燃比传感器的输出值，使得由输出偏差转换器转换的输出偏差为零。 空燃比控制器使用由控制输入计算器计算出的控制输入来控制排气的空燃比。
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公开(公告)号：US20120004827A1
公开(公告)日：2012-01-05
申请号：US13174653
申请日：2011-06-30
IPC分类号： F02D28/00
CPC分类号： F02D41/1454 , F02D41/1402 , F02D41/1403 , F02D41/1441 , F02D2041/1409 , F02D2200/021
摘要： An air-fuel ratio control apparatus for an internal combustion engine includes an air-fuel ratio sensor having an output characteristic which is nonlinear with respect to the air-fuel ratio of exhaust gas. An output deviation converter is configured to convert an output deviation to a first predetermined value if an output value of the air-fuel ratio sensor is on a richer side of a predetermined target value and to a second predetermined value if the output value is on a leaner side of the target value. A control input calculator is configured to calculate a control input to feedback-control the output value of the air-fuel ratio sensor such that the output deviation converted by the output deviation converter is to be zero. An air-fuel ratio controller is configured to control the air-fuel ratio of exhaust gas using the control input calculated by the control input calculator.
摘要翻译： 用于内燃机的空燃比控制装置包括具有相对于排气的空燃比为非线性的输出特性的空燃比传感器。 如果空燃比传感器的输出值处于预定目标值的较浓侧，则输出偏差转换器被配置为将输出偏差转换为第一预定值，并且如果输出值为 目标价值的一方较瘦。 控制输入计算器被配置为计算控制输入以反馈控制空燃比传感器的输出值，使得由输出偏差转换器转换的输出偏差为零。 空燃比控制器使用由控制输入计算器计算出的控制输入来控制排气的空燃比。
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公开(公告)号：US09249712B2
公开(公告)日：2016-02-02
申请号：US13158192
申请日：2011-06-10
CPC分类号： F01N11/00 , F01N2560/025 , F02D41/1403 , F02D41/1441 , F02D41/1482 , F02D41/149 , F02D41/2454 , Y02T10/47
摘要： An air-fuel ratio control system for an internal combustion engine, which, at the resumption of air-fuel ratio feedback control, is capable of setting the initial value of an integral term of the feedback control to a value properly learned in preceding feedback control, thereby enabling improvement of control accuracy. To feedback-control the output value of an O2 sensor to a target value, a target air-fuel ratio is calculated. During the feedback control, when it is determined that a predetermined condition in which it is estimated that exhaust gas air-fuel ratio upstream of the catalyst is excellently reflected on an exhaust gas air-fuel ratio at a location midway or downstream of the catalyst is satisfied, an adaptive law input calculated immediately before interruption of the feedback control is updated and stored as the initial value of an integral term for the following execution of the feedback control.
摘要翻译： 一种用于内燃机的空燃比控制系统，其在恢复空燃比反馈控制时能够将反馈控制的积分项的初始值设定为在先前的反馈控制中正确学习的值 从而能够提高控制精度。 为了将O2传感器的输出值反馈到目标值，计算目标空燃比。 在反馈控制期间，当确定在催化剂上游或下游位置处的排气气体排放气体空气燃料比优异地反映催化剂上游的排气空燃比的预定条件是， 满足于在反馈控制中断之前计算的自适应法则输入被更新并存储为用于随后执行反馈控制的积分项的初始值。
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4.发明申请AIR-FUEL RATIO CONTROL APPARATUS AND AIR-FUEL RATIO CONTROL METHOD FOR INTERNAL-COMBUSTION ENGINE 有权用于内燃机的空燃比比控制装置和空燃比控制方法公开(公告)号：US20110320106A1
公开(公告)日：2011-12-29
申请号：US13108014
申请日：2011-05-16
CPC分类号： F02D41/1402 , F01N3/101 , F02D41/1403 , F02D41/1441 , F02D41/1454 , F02D2041/1409 , F02D2200/021 , Y02T10/22
摘要： An air-fuel ratio control apparatus for an internal-combustion engine includes an air-fuel-ratio sensor, a control-input calculator, an air-fuel-ratio controller, and a gain calculator. The air-fuel-ratio sensor is disposed in an exhaust channel in the internal-combustion engine and is configured to detect an air-fuel ratio in exhaust gas. The control-input calculator is configured to calculate a control input in accordance with an output value of the air-fuel-ratio sensor. The air-fuel-ratio controller is configured to perform a feedback control using the control input such that the output value of the air-fuel-ratio sensor reaches a target value. The gain calculator is configured to calculate a gain in accordance with the output value when the output value is leaner than the target value. The gain is to be used in calculating the control input.
摘要翻译： 用于内燃机的空燃比控制装置包括空燃比传感器，控制输入计算器，空燃比控制器和增益计算器。 所述空燃比传感器配置在所述内燃机的排气通路中，并且能够检测废气中的空燃比。 控制输入计算器被配置为根据空燃比传感器的输出值来计算控制输入。 空燃比控制器被配置为使用控制输入执行反馈控制，使得空燃比传感器的输出值达到目标值。 增益计算器被配置为当输出值比目标值更稀的时候根据输出值来计算增益。 增益用于计算控制输入。
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公开(公告)号：US20110314795A1
公开(公告)日：2011-12-29
申请号：US13158192
申请日：2011-06-10
CPC分类号： F01N11/00 , F01N2560/025 , F02D41/1403 , F02D41/1441 , F02D41/1482 , F02D41/149 , F02D41/2454 , Y02T10/47
摘要： An air-fuel ratio control system for an internal combustion engine, which, at the resumption of air-fuel ratio feedback control, is capable of setting the initial value of an integral term of the feedback control to a value properly learned in preceding feedback control, thereby enabling improvement of control accuracy. To feedback-control the output value of an O2 sensor to a target value, a target air-fuel ratio is calculated. During the feedback control, when it is determined that a predetermined condition in which it is estimated that exhaust gas air-fuel ratio upstream of the catalyst is excellently reflected on an exhaust gas air-fuel ratio at a location midway or downstream of the catalyst is satisfied, an adaptive law input calculated immediately before interruption of the feedback control is updated and stored as the initial value of an integral term for the following execution of the feedback control.
摘要翻译： 一种用于内燃机的空燃比控制系统，其在恢复空燃比反馈控制时能够将反馈控制的积分项的初始值设定为在先前的反馈控制中正确学习的值 从而能够提高控制精度。 为了将O2传感器的输出值反馈到目标值，计算目标空燃比。 在反馈控制期间，当确定在催化剂上游或下游位置处的排气气体排放气体空气燃料比优异地反映催化剂上游的排气空燃比的预定条件是， 满足于在反馈控制中断之前计算的自适应法则输入被更新并存储为用于随后执行反馈控制的积分项的初始值。
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6.发明授权Air-fuel ratio control apparatus and air-fuel ratio control method for internal-combustion engine 有权用于内燃机的空燃比控制装置和空燃比控制方法公开(公告)号：US08694227B2
公开(公告)日：2014-04-08
申请号：US13108014
申请日：2011-05-16
CPC分类号： F02D41/1402 , F01N3/101 , F02D41/1403 , F02D41/1441 , F02D41/1454 , F02D2041/1409 , F02D2200/021 , Y02T10/22
摘要： An air-fuel ratio control apparatus for an internal-combustion engine includes an air-fuel-ratio sensor, a control-input calculator, an air-fuel-ratio controller, and a gain calculator. The air-fuel-ratio sensor is disposed in an exhaust channel in the internal-combustion engine and is configured to detect an air-fuel ratio in exhaust gas. The control-input calculator is configured to calculate a control input in accordance with an output value of the air-fuel-ratio sensor. The air-fuel-ratio controller is configured to perform a feedback control using the control input such that the output value of the air-fuel-ratio sensor reaches a target value. The gain calculator is configured to calculate a gain in accordance with the output value when the output value is leaner than the target value. The gain is to be used in calculating the control input.
摘要翻译： 用于内燃机的空燃比控制装置包括空燃比传感器，控制输入计算器，空燃比控制器和增益计算器。 所述空燃比传感器配置在所述内燃机的排气通路中，并且能够检测废气中的空燃比。 控制输入计算器被配置为根据空燃比传感器的输出值来计算控制输入。 空燃比控制器被配置为使用控制输入执行反馈控制，使得空燃比传感器的输出值达到目标值。 增益计算器被配置为当输出值比目标值更稀的时候根据输出值来计算增益。 增益用于计算控制输入。
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公开(公告)号：US08983754B2
公开(公告)日：2015-03-17
申请号：US13473593
申请日：2012-05-17
申请人： Seiji Watanabe , Tooru Sekiguchi , Hiroyuki Ando , Atsuhiro Miyauchi , Takeshi Aoki , Michinori Tani , Soichiro Goto
发明人： Seiji Watanabe , Tooru Sekiguchi , Hiroyuki Ando , Atsuhiro Miyauchi , Takeshi Aoki , Michinori Tani , Soichiro Goto
CPC分类号： F02D41/1456 , F02D41/1495 , F02D2041/288
摘要： An apparatus for controlling an air-fuel ratio of an internal-combustion engine includes an air-fuel ratio detector, a fluctuation signal generating device, an air-fuel ratio fluctuation device, a 0.5th-order frequency component strength calculator, a fluctuation frequency component strength calculator, a reference component strength calculator, and an imbalance fault determining device. The reference component strength calculator is configured to calculate strength of a reference component in accordance with strength of a first frequency component and strength of a second frequency component. The imbalance fault determining device is configured to make a determination of an imbalance fault in which air-fuel ratios of a plurality of cylinders vary beyond a tolerance limit on a basis of a relative relationship between strength of the 0.5th-order frequency component and the strength of the reference component.
摘要翻译： 用于控制内燃机的空燃比的装置包括空燃比检测器，变动信号发生装置，空燃比变动装置，0.5次频率分量强度计算器，波动频率 分量强度计算器，参考分量强度计算器和不平衡故障确定装置。 参考分量强度计算器被配置为根据第一频率分量的强度和第二频率分量的强度来计算参考分量的强度。 不平衡故障确定装置被配置为基于0.5次频率分量的强度与第5级频率分量的相对关系来确定多个气缸的空燃比变化超过公差极限的不平衡故障 参考组件的强度。
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公开(公告)号：US08725304B2
公开(公告)日：2014-05-13
申请号：US13239787
申请日：2011-09-22
IPC分类号： G06F19/00
CPC分类号： G05B13/04 , F02D41/1401 , F02D2041/141
摘要： A plant controller includes a feedback controller configured to calculate a control input provided to a plant so that a control output of the plant matches a target value. The feedback controller includes a controller transfer function that is a transfer function of the feedback controller. The controller transfer function is expressed by a product of an inverse transfer function of a transfer function of a control target model obtained by modeling the plant and a disturbance sensitivity correlation function defined using a sensitivity function. The sensitivity function indicates sensitivity of a disturbance to be applied to the plant with respect to the control output. The sensitivity function is defined by using a response characteristic parameter that indicates a response characteristic of the plant.
摘要翻译： 工厂控制器包括反馈控制器，其被配置为计算提供给工厂的控制输入，使得设备的控制输出与目标值匹配。 反馈控制器包括作为反馈控制器的传递函数的控制器传递函数。 控制器传递函数由通过对工厂进行建模获得的控制目标模型的传递函数的反向传递函数和使用灵敏度函数定义的干扰敏感度相关函数的乘积表示。 灵敏度功能表示相对于控制输出对工厂施加扰动的灵敏度。 灵敏度函数通过使用指示工厂的响应特性的响应特性参数来定义。
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公开(公告)号：US20120101641A1
公开(公告)日：2012-04-26
申请号：US13239787
申请日：2011-09-22
CPC分类号： G05B13/04 , F02D41/1401 , F02D2041/141
摘要： A plant controller includes a feedback controller configured to calculate a control input provided to a plant so that a control output of the plant matches a target value. The feedback controller includes a controller transfer function that is a transfer function of the feedback controller. The controller transfer function is expressed by a product of an inverse transfer function of a transfer function of a control target model obtained by modeling the plant and a disturbance sensitivity correlation function defined using a sensitivity function. The sensitivity function indicates sensitivity of a disturbance to be applied to the plant with respect to the control output. The sensitivity function is defined by using a response characteristic parameter that indicates a response characteristic of the plant.
摘要翻译： 工厂控制器包括反馈控制器，其被配置为计算提供给工厂的控制输入，使得设备的控制输出与目标值匹配。 反馈控制器包括作为反馈控制器的传递函数的控制器传递函数。 控制器传递函数由通过对工厂进行建模获得的控制目标模型的传递函数的反向传递函数和使用灵敏度函数定义的干扰敏感度相关函数的乘积表示。 灵敏度功能表示相对于控制输出对工厂施加扰动的灵敏度。 灵敏度函数通过使用指示工厂的响应特性的响应特性参数来定义。
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公开(公告)号：US20130047969A1
公开(公告)日：2013-02-28
申请号：US13527408
申请日：2012-06-19
申请人： Tooru Sekiguchi , Atsuhiro Miyauchi , Takeshi Aoki , Michinori Tani , Takashi Yanagiura , Seiji Watanabe
发明人： Tooru Sekiguchi , Atsuhiro Miyauchi , Takeshi Aoki , Michinori Tani , Takashi Yanagiura , Seiji Watanabe
IPC分类号： F02D41/00
CPC分类号： F02D41/1408 , F02D41/1495 , F02D41/22 , F02D2041/288 , Y02T10/40
摘要： An air-fuel ratio control system for an internal combustion engine has a perturbation control which oscillates the air-fuel ratio with a first frequency. A first difference signal is generated indicative of a difference between a present value and a first past value from an air-fuel ratio sensor detected at a timing of a first specific period which is set to reduce a specific frequency component corresponding to a specific frequency different from the first frequency. A first frequency component is extracted. A second difference signal is generated indicative of a difference between a present value and a second past value detected at a timing of a second specific period which is set to reduce the first frequency component. The specific frequency component is extracted. A failure of the control system is determined by a relationship between intensities of the first frequency component and the specific frequency component.
摘要翻译： 用于内燃机的空燃比控制系统具有以第一频率振荡空燃比的扰动控制。 产生第一差分信号，其指示在第一特定周期的定时检测到的空燃比传感器的当前值和第一过去值之间的差，其被设置为减小对应于特定频率不同的特定频率分量 从第一个频率。 提取第一频率分量。 产生指示在设定为减少第一频率分量的第二特定周期的定时检测到的当前值和第二过去值之间的差的第二差分信号。 提取特定频率分量。 控制系统的故障由第一频率分量和特定频率分量的强度之间的关系确定。
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