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1. 发明授权

US08965662B2 Abnormality determining apparatus for air-fuel ratio sensor 有权
标题翻译：空燃比传感器异常判定装置
公开(公告)号：US08965662B2
公开(公告)日：2015-02-24
申请号：US13436996
申请日：2012-04-02
申请人： Takeshi Aoki , Atsuhiro Miyauchi , Michinori Tani , Seiji Watanabe , Tooru Sekiguchi , Hiroyuki Ando
发明人： Takeshi Aoki , Atsuhiro Miyauchi , Michinori Tani , Seiji Watanabe , Tooru Sekiguchi , Hiroyuki Ando
IPC分类号： F02D41/22 , F02D41/14 , F02D41/12
CPC分类号： F02D41/1495 , F02D41/123 , F02D41/126
摘要： An abnormality determining apparatus includes an air-fuel ratio controller, an output change period parameter calculator, an output change amount extremum calculator, and an abnormality determining device. The abnormality determining device is configured to determine an abnormality of an air-fuel ratio sensor based on a relationship between an output change period parameter and an output change amount extremum.
摘要翻译：异常判定装置包括空燃比控制器，输出变化周期参数运算器，输出变化量极值计算器和异常判定装置。异常判定装置基于输出变化周期参数和输出变化量极值之间的关系来确定空燃比传感器的异常。

2. 发明申请

US20120192634A1 ABNORMALITY DETERMINATION DEVICE FOR AIR-FUEL RATIO SENSOR 有权
标题翻译：用于空气 - 燃料比传感器的异常确定装置
公开(公告)号：US20120192634A1
公开(公告)日：2012-08-02
申请号：US13312998
申请日：2011-12-07
申请人： Takeshi AOKI , Atsuhiro Miyauchi , Michinori Tani , Hiroyuki Ando
发明人： Takeshi AOKI , Atsuhiro Miyauchi , Michinori Tani , Hiroyuki Ando
IPC分类号： G01M15/10
CPC分类号： G01M15/104
摘要： An abnormality determination device for an air-fuel ratio sensor includes a differential value calculator and an abnormality determiner. The differential value calculator is configured to calculate a differential value of an output value of the air-fuel ratio sensor which is configured to detect an air-fuel ratio of exhaust gas. The abnormality determiner is configured to determine abnormality of the air-fuel ratio sensor based on a result of comparison between a reference output value of the air-fuel ratio sensor and a predetermined threshold. The reference output value is obtained by the air-fuel ratio sensor when the differential value calculated by the differential value calculator becomes a predetermined value.
摘要翻译：空燃比传感器的异常判定装置具有差分值运算部和异常判定部。差分值计算器被配置为计算被配置为检测排气的空燃比的空燃比传感器的输出值的差分值。异常判定部基于空燃比传感器的基准输出值与规定的阈值的比较结果来判断空燃比传感器的异常。当由差分值计算器计算的微分值变为预定值时，由空燃比传感器获得基准输出值。

3. 发明授权

US08983754B2 Apparatus for controlling air-fuel ratio of internal-combustion engine 有权
标题翻译：用于控制内燃机空燃比的装置
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
IPC分类号： B60T7/12 , G05D1/00 , G06F7/00 , G06F17/00 , F02D41/14 , F02D41/28
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。

4. 发明授权

US08794056B2 Abnormality determination device for air-fuel ratio sensor 有权
标题翻译：空燃比传感器异常判定装置
公开(公告)号：US08794056B2
公开(公告)日：2014-08-05
申请号：US13312998
申请日：2011-12-07
申请人： Takeshi Aoki , Atsuhiro Miyauchi , Michinori Tani , Hiroyuki Ando
发明人： Takeshi Aoki , Atsuhiro Miyauchi , Michinori Tani , Hiroyuki Ando
IPC分类号： G01M15/10
CPC分类号： G01M15/104
摘要： An abnormality determination device for an air-fuel ratio sensor includes a differential value calculator and an abnormality determiner. The differential value calculator is configured to calculate a differential value of an output value of the air-fuel ratio sensor which is configured to detect an air-fuel ratio of exhaust gas. The abnormality determiner is configured to determine abnormality of the air-fuel ratio sensor based on a result of comparison between a reference output value of the air-fuel ratio sensor and a predetermined threshold. The reference output value is obtained by the air-fuel ratio sensor when the differential value calculated by the differential value calculator becomes a predetermined value.
摘要翻译：空燃比传感器的异常判定装置具有差分值运算部和异常判定部。差分值计算器被配置为计算被配置为检测排气的空燃比的空燃比传感器的输出值的差分值。异常判定部基于空燃比传感器的基准输出值与规定的阈值的比较结果来判断空燃比传感器的异常。当由差分值计算器计算的微分值变为预定值时，由空燃比传感器获得基准输出值。

5. 发明申请

US20130047969A1 AIR-FUEL RATIO CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE 有权
标题翻译：用于内燃机的空燃比比控制系统
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。

6. 发明申请

US20130061581A1 AIR-FUEL RATIO CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE 有权
标题翻译：用于内燃机的空燃比比控制系统
公开(公告)号：US20130061581A1
公开(公告)日：2013-03-14
申请号：US13565291
申请日：2012-08-02
申请人： Tooru SEKIGUCHI , Atsuhiro Miyauchi , Takeshi Aoki , Michinori Tani , Seiji Watanabe
发明人： Tooru SEKIGUCHI , Atsuhiro Miyauchi , Takeshi Aoki , Michinori Tani , Seiji Watanabe
IPC分类号： F02D41/00 , F01N3/08
CPC分类号： F02D41/0085 , F02D41/1408 , F02D41/1455 , F02D2041/288
摘要： An oscillation signal is generated to oscillate the air-fuel ratio with a set frequency which is different from a 0.5th-order frequency (half of the frequency corresponding to a rotational speed of the engine). Air-fuel ratio perturbation control is performed to oscillate the air-fuel ratio according to the oscillation signal. An intensity of the 0.5th-order frequency component and the set frequency component contained in the detected air-fuel ratio signal are calculated. A determination parameter applied to determining an imbalance degree of air-fuel ratios corresponding to the plurality of cylinders is calculated according to the two intensities and determines an imbalance failure that the imbalance degree of the air-fuel ratios exceeds an acceptable limit. A predicted imbalance value, indicative of a predicted value of the imbalance degree, is calculated, and an amplitude of the oscillation signal is set according to the predicted imbalance value.
摘要翻译：产生振荡信号，以与不同于0.5次频率（对应于发动机的转速的一半频率）的设定频率来振荡空燃比。执行空燃比扰动控制，以根据振荡信号使空燃比振荡。计算包含在检测的空燃比信号中的0.5次频率分量和设定频率分量的强度。根据两个强度计算用于确定对应于多个气缸的空燃比的不平衡度的确定参数，并且确定空燃比的不平衡度超过可接受极限的失衡失效。计算表示不平衡度的预测值的预测不平衡值，根据预测的不平衡值设定振动信号的振幅。

7. 发明授权

US09057337B2 Air-fuel ratio control system for internal combustion engine 有权
标题翻译：内燃机空燃比控制系统
公开(公告)号：US09057337B2
公开(公告)日：2015-06-16
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： G06F19/00 , G06G7/70 , F02D41/14 , F02D41/22 , F02D41/28
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决定。

8. 发明授权

US08726637B2 Air-fuel ratio control system for internal combustion engine 有权
标题翻译：内燃机空燃比控制系统
公开(公告)号：US08726637B2
公开(公告)日：2014-05-20
申请号：US13565291
申请日：2012-08-02
申请人： Tooru Sekiguchi , Atsuhiro Miyauchi , Takeshi Aoki , Michinori Tani , Seiji Watanabe
发明人： Tooru Sekiguchi , Atsuhiro Miyauchi , Takeshi Aoki , Michinori Tani , Seiji Watanabe
IPC分类号： F01N3/08 , F02D41/00
CPC分类号： F02D41/0085 , F02D41/1408 , F02D41/1455 , F02D2041/288
摘要： An oscillation signal is generated to oscillate the air-fuel ratio with a set frequency which is different from a 0.5th-order frequency (half of the frequency corresponding to a rotational speed of the engine). Air-fuel ratio perturbation control is performed to oscillate the air-fuel ratio according to the oscillation signal. An intensity of the 0.5th-order frequency component and the set frequency component contained in the detected air-fuel ratio signal are calculated. A determination parameter applied to determining an imbalance degree of air-fuel ratios corresponding to the plurality of cylinders is calculated according to the two intensities and determines an imbalance failure that the imbalance degree of the air-fuel ratios exceeds an acceptable limit. A predicted imbalance value, indicative of a predicted value of the imbalance degree, is calculated, and an amplitude of the oscillation signal is set according to the predicted imbalance value.
摘要翻译：产生振荡信号，以与不同于0.5次频率（对应于发动机的转速的一半频率）的设定频率来振荡空燃比。执行空燃比扰动控制，以根据振荡信号使空燃比振荡。计算包含在检测的空燃比信号中的0.5次频率分量和设定频率分量的强度。根据两个强度计算用于确定对应于多个气缸的空燃比的不平衡度的确定参数，并且确定空燃比的不平衡度超过可接受极限的失衡失效。计算表示不平衡度的预测值的预测不平衡值，根据预测的不平衡值设定振动信号的振幅。

9. 发明授权

US08818690B2 Air-fuel ratio control apparatus for internal combustion engine 有权
标题翻译：用于内燃机的空燃比控制装置
公开(公告)号：US08818690B2
公开(公告)日：2014-08-26
申请号：US13174653
申请日：2011-06-30
申请人： Michinori Tani , Kenichi Maeda , Atsuhiro Miyauchi , Seiji Watanabe , Soichiro Goto
发明人： Michinori Tani , Kenichi Maeda , Atsuhiro Miyauchi , Seiji Watanabe , Soichiro Goto
IPC分类号： F02D41/14 , F02D28/00 , G06F17/00
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。

10. 发明申请

US20120004827A1 AIR-FUEL RATIO CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE 有权
标题翻译：用于内燃机的空燃比比控制装置
公开(公告)号：US20120004827A1
公开(公告)日：2012-01-05
申请号：US13174653
申请日：2011-06-30
申请人： Michinori TANI , Kenichi Maeda , Atsuhiro Miyauchi , Seiji Watanabe , Soichiro Goto
发明人： Michinori TANI , Kenichi Maeda , Atsuhiro Miyauchi , Seiji Watanabe , Soichiro Goto
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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