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    OXYGEN SENSOR AND OXYGEN SENSOR CONTROL DEVICE
    1.
    发明申请
    OXYGEN SENSOR AND OXYGEN SENSOR CONTROL DEVICE 有权
    氧传感器和氧传感器控制装置

    公开(公告)号：US20130276431A1

    公开(公告)日：2013-10-24

    申请号：US13993734

    申请日：2010-12-24

    申请人： Keiichiro Aoki ,  Takanori Sasaki ,  Go Hayashita

    发明人： Keiichiro Aoki ,  Takanori Sasaki ,  Go Hayashita

    IPC分类号： F01N11/00

    CPC分类号： F01N11/007 ,  F02D41/123 ,  F02D41/1454 ,  F02D41/1476 ,  F02D2041/2051 ,  G01N27/407

    摘要： In this invention, an EMF oxygen sensor is subjected to an activation process applying unidirectional voltage between an atmosphere electrode and an exhaust electrode thereof. A control device controlling the oxygen sensor in which a voltage was applied with the atmosphere electrode being positive, additionally applies unidirectional voltage between the electrodes to make the atmosphere electrode positive, for example, when the oxygen sensor was used under an environment in which the air-fuel ratio of the internal combustion engine was rich relative to the theoretical air-fuel ratio. Conversely, A control device controlling the oxygen sensor in which a voltage was applied to make the atmosphere electrode negative, additionally applies unidirectional voltage between the electrodes to make the atmosphere electrode negative, for example, when the oxygen sensor was used under an environment in which the air-fuel ratio was lean relative to the theoretical air-fuel ratio.

    摘要翻译： 在本发明中，EMF氧传感器在气氛电极和排气电极之间进行施加单向电压的激活处理。 控制在气氛电极中施加电压的氧传感器的控制装置为正，另外在电极之间施加单向电压，使得气氛电极为正，例如当氧气传感器在空气中的环境下使用时 内燃机的燃料比相对于理论空燃比是丰富的。 相反，控制其中施加电压以使气氛电极为负的氧传感器的控制装置另外在电极之间施加单向电压，以使气氛电极为负值，例如当氧传感器在其中 空燃比相当于理论空燃比。

    Oxygen sensor and oxygen sensor control device
    2.
    发明授权
    Oxygen sensor and oxygen sensor control device 有权

    公开(公告)号：US09732657B2

    公开(公告)日：2017-08-15

    申请号：US13993734

    申请日：2010-12-24

    申请人： Keiichiro Aoki ,  Takanori Sasaki ,  Go Hayashita

    发明人： Keiichiro Aoki ,  Takanori Sasaki ,  Go Hayashita

    IPC分类号： F01N11/00 ,  G01N27/407 ,  F02D41/12 ,  F02D41/14 ,  F02D41/20

    CPC分类号： F01N11/007 ,  F02D41/123 ,  F02D41/1454 ,  F02D41/1476 ,  F02D2041/2051 ,  G01N27/407

    摘要： In this invention, an EMF oxygen sensor is subjected to an activation process applying unidirectional voltage between an atmosphere electrode and an exhaust electrode thereof. A control device controlling the oxygen sensor in which a voltage was applied with the atmosphere electrode being positive, additionally applies unidirectional voltage between the electrodes to make the atmosphere electrode positive, for example, when the oxygen sensor was used under an environment in which the air-fuel ratio of the internal combustion engine was rich relative to the theoretical air-fuel ratio. Conversely, a control device controlling the oxygen sensor in which a voltage was applied to make the atmosphere electrode negative, additionally applies unidirectional voltage between the electrodes to make the atmosphere electrode negative, for example, when the oxygen sensor was used under an environment in which the air-fuel ratio was lean relative to the theoretical air-fuel ratio.

    CATALYST-DEGRADATION DETECTION DEVICE
    3.
    发明申请
    CATALYST-DEGRADATION DETECTION DEVICE 有权
    催化降解检测装置

    公开(公告)号：US20140250993A1

    公开(公告)日：2014-09-11

    申请号：US14350685

    申请日：2011-10-24

    申请人： Keiichiro Aoki ,  Go Hayashita ,  Takanori Sasaki

    发明人： Keiichiro Aoki ,  Go Hayashita ,  Takanori Sasaki

    IPC分类号： F01N11/00

    CPC分类号： F01N11/007 ,  F01N3/101 ,  F01N2550/02 ,  F01N2560/025 ,  F01N2560/14 ,  F01N2900/0416 ,  F01N2900/1624 ,  F02D41/1441 ,  F02D41/1456 ,  Y02T10/22 ,  Y02T10/47

    摘要： An oxygen amount (an oxygen storage amount OSA) stored by metal cerium during a storage cycle is obtained based on an output value of an A/F sensor in a time period immediately before an exhaust air-fuel ratio (a downstream side A/F) detected by the A/F sensor shifts to a lean region, and degradation relating to OSC of the three-way catalyst is detected. In the storage cycle, a target air-fuel ratio is set so that an air-fuel ratio of exhaust emission flowing into an S/C changes from rich to lean. Therefore, the downstream side A/F shifts from stoichiometry to the lean region at a time after reaching stoichiometry. When the three-way catalyst degrades, the downstream side A/F shifts to the lean region from stoichiometry at a time. Therefore, the calculated oxygen storage amount OSA becomes extremely smaller as compared with that at a normal time.

    摘要翻译： 基于A / F传感器在排气空燃比之前的时间段（下游侧A / F）中的输出值，获得在储存循环期间由金属铈储存的氧量（储氧量OSA） ）移动到贫气区域，并且检测到与三元催化剂的OSC相关的降解。 在存储循环中，设定目标空燃比，使流入S / C的排气的空燃比从浓到稀。 因此，在达到化学计量之后的一段时间，下游侧A / F从化学计量转移到稀薄区域。 当三元催化剂劣化时，下游侧A / F一次从化学计量转移到贫的区域。 因此，与常规时间相比，计算出的氧气存储量OSA变得非常小。

    CORRECTION DEVICE FOR AIR/FUEL RATIO SENSOR
    4.
    发明申请
    CORRECTION DEVICE FOR AIR/FUEL RATIO SENSOR 有权
    空气/燃油比传感器校正装置

    公开(公告)号：US20140075924A1

    公开(公告)日：2014-03-20

    申请号：US14114770

    申请日：2011-05-19

    申请人： Keiichiro Aoki ,  Takanori Sasaki ,  Go Hayashita

    发明人： Keiichiro Aoki ,  Takanori Sasaki ,  Go Hayashita

    IPC分类号： F01N3/18

    CPC分类号： F02D41/2474 ,  F01N3/18 ,  F02D41/0235 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/2438 ,  F02D41/2441 ,  F02D41/2454

    摘要： A correction device for an air/fuel ratio sensor in the present invention, the sensor issuing an output according to an air/fuel ratio and installed on the downstream from catalyst of the exhaust passage, has air/fuel ratio control means for controlling an air/fuel ratio of an exhaust gas on the upstream side from a catalyst to switch between a rich air/fuel ratio which is richer and a lean air/fuel ratio which is leaner than a stoichiometric air/fuel ratio. Moreover, correction means for correcting an output of the sensor in accordance with a difference between the output of the sensor during a predetermined period during air/fuel ratio control by the air/fuel ratio control means, and a reference output corresponding to a stoichiometric air/fuel ratio, is provided.

    摘要翻译： 本发明的空气/燃料比传感器的校正装置中，具有空气/燃料比的输出装置，安装在排气通路的催化剂下游的传感器具有空气/燃料比控制装置， /从催化剂上游侧排出的废气的燃料比在富空燃比和比理论空燃比稀的稀空燃比之间切换。 此外，根据空气/燃料比控制装置的空气/燃料比控制期间的预定时间段期间传感器的输出之间的差异校正装置以及对应于理论空燃比的参考输出的校正装置 /燃料比。

    Catalyst-degradation detection device
    5.
    发明授权
    Catalyst-degradation detection device 有权
    催化剂降解检测装置

    公开(公告)号：US09261007B2

    公开(公告)日：2016-02-16

    申请号：US14350685

    申请日：2011-10-24

    申请人： Keiichiro Aoki ,  Go Hayashita ,  Takanori Sasaki

    发明人： Keiichiro Aoki ,  Go Hayashita ,  Takanori Sasaki

    IPC分类号： F01N11/00 ,  F02D41/14 ,  F01N3/10

    CPC分类号： F01N11/007 ,  F01N3/101 ,  F01N2550/02 ,  F01N2560/025 ,  F01N2560/14 ,  F01N2900/0416 ,  F01N2900/1624 ,  F02D41/1441 ,  F02D41/1456 ,  Y02T10/22 ,  Y02T10/47

    摘要： An oxygen amount (an oxygen storage amount OSA) stored by metal cerium during a storage cycle is obtained based on an output value of an A/F sensor in a time period immediately before an exhaust air-fuel ratio (a downstream side A/F) detected by the A/F sensor shifts to a lean region, and degradation relating to OSC of the three-way catalyst is detected. In the storage cycle, a target air-fuel ratio is set so that an air-fuel ratio of exhaust emission flowing into an S/C changes from rich to lean. Therefore, the downstream side A/F shifts from stoichiometry to the lean region at a time after reaching stoichiometry. When the three-way catalyst degrades, the downstream side A/F shifts to the lean region from stoichiometry at a time. Therefore, the calculated oxygen storage amount OSA becomes extremely smaller as compared with that at a normal time.

    摘要翻译： 基于A / F传感器在排气空燃比之前的时间段（下游侧A / F）中的输出值，获得在储存循环期间由金属铈储存的氧量（储氧量OSA） ）移动到贫气区域，并且检测到与三元催化剂的OSC相关的降解。 在存储循环中，设定目标空燃比，使流入S / C的排气的空燃比从浓到稀。 因此，在达到化学计量之后的一段时间，下游侧A / F从化学计量转移到稀薄区域。 当三元催化剂劣化时，下游侧A / F一次从化学计量转移到贫的区域。 因此，与常规时间相比，计算出的氧气存储量OSA变得非常小。

    Correction device for air/fuel ratio sensor
    6.
    发明授权
    Correction device for air/fuel ratio sensor 有权
    空气/燃料比传感器校正装置

    公开(公告)号：US09347352B2

    公开(公告)日：2016-05-24

    申请号：US14114770

    申请日：2011-05-19

    申请人： Keiichiro Aoki ,  Takanori Sasaki ,  Go Hayashita

    发明人： Keiichiro Aoki ,  Takanori Sasaki ,  Go Hayashita

    IPC分类号： F01N3/00 ,  F01N3/18 ,  F02D41/14 ,  F02D41/02 ,  F02D41/24

    CPC分类号： F02D41/2474 ,  F01N3/18 ,  F02D41/0235 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/2438 ,  F02D41/2441 ,  F02D41/2454

    摘要： A correction device for an air/fuel ratio sensor in the present invention, the sensor issuing an output according to an air/fuel ratio and installed on the downstream from catalyst of the exhaust passage, has air/fuel ratio control means for controlling an air/fuel ratio of an exhaust gas on the upstream side from a catalyst to switch between a rich air/fuel ratio which is richer and a lean air/fuel ratio which is leaner than a stoichiometric air/fuel ratio. Moreover, correction means for correcting an output of the sensor in accordance with a difference between the output of the sensor during a predetermined period during air/fuel ratio control by the air/fuel ratio control means, and a reference output corresponding to a stoichiometric air/fuel ratio, is provided.

    摘要翻译： 本发明的空气/燃料比传感器的校正装置中，具有空气/燃料比的输出装置，安装在排气通路的催化剂下游的传感器具有空气/燃料比控制装置， /从催化剂上游侧排出的废气的燃料比在富空燃比和比理论空燃比稀的稀空燃比之间切换。 此外，根据空气/燃料比控制装置的空气/燃料比控制期间的预定时间段期间传感器的输出之间的差异校正装置以及对应于理论空燃比的参考输出的校正装置 /燃料比。

    SENSOR CHARACTERISTIC CORRECTION DEVICE
    9.
    发明申请
    SENSOR CHARACTERISTIC CORRECTION DEVICE 有权
    传感器特征校正装置

    公开(公告)号：US20140005882A1

    公开(公告)日：2014-01-02

    申请号：US14006405

    申请日：2011-05-24

    申请人： Keiichiro Aoki ,  Takanori Sasaki ,  Go Hayashita

    发明人： Keiichiro Aoki ,  Takanori Sasaki ,  Go Hayashita

    IPC分类号： F02D41/14

    CPC分类号： F02D41/1438 ,  F02D41/062 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/2474

    摘要： A sensor characteristic correction device is configured to detect a characteristic of a first sensor arranged upstream of a catalyst 6 in an exhaust passage 4 of an internal combustion engine 2, and a characteristic of a second sensor that is an air-fuel sensor 12 arranged downstream of the catalyst 6, to calculate a first air-fuel ratio based on the characteristic of the first sensor, and calculates a second air-fuel ratio based on the characteristic of the second sensor, to detect, when the catalyst 6 is in an inactive state after start-up of the internal combustion engine 2, a difference between the first characteristic and the second characteristic or a difference between the first air-fuel ratio and the second air-fuel ratio, and to correct the responsiveness of the first or the second sensor in accordance with the difference.

    摘要翻译： 传感器特性校正装置被配置为检测布置在内燃机2的排气通道4中的催化剂6上游的第一传感器的特性，以及作为布置在下游的空气 - 燃料传感器12的第二传感器的特性 ，以基于第一传感器的特性来计算第一空燃比，并且基于第二传感器的特性计算第二空燃比，以在催化剂6处于非活动状态时检测 内燃机2启动后的状态，第一特性和第二特性之间的差异，或第一空燃比与第二空燃比之间的差异，并且校正第一或第二空燃比的响应性 第二传感器根据差异。

    Sensor characteristic correction device
    10.
    发明授权
    Sensor characteristic correction device 有权
    传感器特征校正装置

    公开(公告)号：US09163574B2

    公开(公告)日：2015-10-20

    申请号：US14006405

    申请日：2011-05-24

    申请人： Keiichiro Aoki ,  Takanori Sasaki ,  Go Hayashita

    发明人： Keiichiro Aoki ,  Takanori Sasaki ,  Go Hayashita

    IPC分类号： F02D41/24 ,  F02D41/06 ,  F02D41/14 ,  G01M17/00 ,  G06F19/00

    CPC分类号： F02D41/1438 ,  F02D41/062 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/2474

    摘要： A sensor characteristic correction device is configured to detect a characteristic of a first sensor arranged upstream of a catalyst 6 in an exhaust passage 4 of an internal combustion engine 2, and a characteristic of a second sensor that is an air-fuel sensor 12 arranged downstream of the catalyst 6, to calculate a first air-fuel ratio based on the characteristic of the first sensor, and calculates a second air-fuel ratio based on the characteristic of the second sensor, to detect, when the catalyst 6 is in an inactive state after start-up of the internal combustion engine 2, a difference between the first characteristic and the second characteristic or a difference between the first air-fuel ratio and the second air-fuel ratio, and to correct the responsiveness of the first or the second sensor in accordance with the difference.

    摘要翻译： 传感器特性校正装置被配置为检测布置在内燃机2的排气通道4中的催化剂6上游的第一传感器的特性，以及作为布置在下游的空气 - 燃料传感器12的第二传感器的特性 ，以基于第一传感器的特性来计算第一空燃比，并且基于第二传感器的特性计算第二空燃比，以在催化剂6处于非活动状态时检测 内燃机2启动后的状态，第一特性和第二特性之间的差异，或第一空燃比与第二空燃比之间的差异，并且校正第一或第二空燃比的响应性 第二传感器根据差异。