公开(公告)号：US09261007B2

公开(公告)日：2016-02-16

申请号：US14350685

申请日：2011-10-24

Applicant: Keiichiro Aoki ,  Go Hayashita ,  Takanori Sasaki

Inventor： Keiichiro Aoki ,  Go Hayashita ,  Takanori Sasaki

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

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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20160017828A1

公开(公告)日：2016-01-21

申请号：US14763555

申请日：2013-01-29

Applicant: Go HAYASHITA ,  Keiichiro AOKI

Inventor： Go HAYASHITA ,  Keiichiro AOKI

IPC: F02D41/14

CPC classification number: F02D41/1454 ,  F02D41/1401 ,  F02D41/1441 ,  F02D41/1456 ,  G01N27/4065 ,  G01N27/419

Abstract: This control device for an internal combustion engine is equipped with: an air/fuel ratio sensor provided to the exhaust passage of an internal combustion engine; and an engine control device that controls the internal combustion engine according to the output of the air/fuel ratio sensor. The air/fuel ratio sensor is equipped with: a gas chamber to be measured, into which exhaust gas flows; a pump cell that pumps oxygen into or out of the gas chamber to be measured according to the pump current; and a reference cell of which the reference cell output current detected varies according to the air/fuel ratio inside the gas chamber to be measured. The reference cell is equipped with: a first electrode that is exposed to the exhaust gas in the gas chamber to be measured; a second electrode exposed to a reference atmosphere; and a solid electrolyte layer arranged between the electrodes. The air/fuel ratio sensor is equipped with: a reference cell voltage applying device that applies a sensor applied voltage between the electrodes; and a reference cell output current detection device that detects, as the reference cell output current, the current flowing between the electrodes.

Abstract translation: 该内燃机用控制装置具备：设置于内燃机的排气通路的空气/燃料比传感器; 以及根据空燃比传感器的输出来控制内燃机的发动机控制装置。 空气/燃料比传感器配备有：待测量的气体室，废气流动到其中; 泵电池根据泵浦电流将氧气输入或流出待测量的气室; 并且根据待测量的气体室内的空气/燃料比，检测出参考单元输出电流的参考单元变化。 参考电池配备有：暴露于要测量的气室中的废气的第一电极; 暴露于参考气氛的第二电极; 以及设置在电极之间的固体电解质层。 空气/燃料比传感器配备有：在电极之间施加传感器施加电压的参考电池电压施加装置; 以及参考单元输出电流检测装置，其检测在电极之间流动的电流作为参考单元输出电流。

公开(公告)号：US20150168343A1

公开(公告)日：2015-06-18

申请号：US14568414

申请日：2014-12-12

Applicant: Go Hayashita ,  Naoki Takeuchi

Inventor： Go Hayashita ,  Naoki Takeuchi

IPC: G01N27/407

CPC classification number: G01N27/4077 ,  G01N27/4073

Abstract: A control system having an exhaust gas sensor having a solid electrolyte layer, a first electrode layer arranged on one surface of the solid electrolyte layer and exposed to exhaust gas through a diffusion-controlling layer and/or trap layer, and a second electrode layer arranged on the other surface of the solid electrolyte layer, wherein the solid electrolyte layer comprises a self-healing ceramic material and/or the diffusion-controlling layer and/or trap layer comprise a self-healing ceramic material; and a voltage applying device; wherein periodically and/or when it is judged that the layer comprising the self-healing ceramic material is damaged, regeneration treatment comprising changing the voltage applied between the first electrode layer and the second electrode layer by the voltage applying device is performed so that the amount of oxygen flowing through the layer comprising the self-healing ceramic material is larger than normal.

Abstract translation: 一种控制系统，具有具有固体电解质层的废气传感器，布置在固体电解质层的一个表面上并通过扩散控制层和/或捕获层暴露于废气的第一电极层和布置在第二电极层中的第二电极层 在所述固体电解质层的另一个表面上，其中所述固体电解质层包括自修复陶瓷材料和/或所述扩散控制层和/或捕获层包括自愈愈合陶瓷材料; 和电压施加装置; 其中周期性地和/或当判断出包含自修复陶瓷材料的层被损坏时，进行包括通过施加电压的装置改变施加在第一电极层和第二电极层之间的电压的再生处理， 通过包含自愈陶瓷材料的层的氧气大于正常值。

公开(公告)号：US20110308506A1

公开(公告)日：2011-12-22

申请号：US13164820

申请日：2011-06-21

Applicant: Go Hayashita ,  Keiichiro Aoki

Inventor： Go Hayashita ,  Keiichiro Aoki

IPC: F02D41/00

CPC classification number: F02D41/0085 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/1474

Abstract: An internal combustion engine control device and a control method therefore in which feedback control is performed such that a detected air-fuel ratio of exhaust gas detected on the basis of a critical electric current flowing in a solid electrolyte layer of an air-fuel ratio sensor when an air-fuel ratio detection voltage is applied between an exhaust-side electrode layer and an atmosphere-side electrode layer of the sensor matches a stoichiometric air-fuel ratio. When a parameter acquired as an imbalance determination parameter is larger than an imbalance determination threshold, an air-fuel ratio inter-cylinder imbalance state is determined to have occurred. The output responsiveness of the air-fuel ratio sensor when the air-fuel ratio changes from a lean to a rich (or changes in the opposite direction) is acquired, and when this output responsiveness is low, “a sensor responsiveness increasing voltage that is higher than the air-fuel ratio detection voltage” is applied between the exhaust-side electrode layer and the atmosphere-side electrode layer.

Abstract translation: 一种内燃机控制装置和控制方法，其中进行反馈控制，使得基于在空燃比传感器的固体电解质层中流动的临界电流检测到的检测到的废气的空燃比 当在排气侧电极层和传感器的气氛侧电极层之间施加空燃比检测电压时，与化学计量空燃比相匹配。 当作为不平衡确定参数获取的参数大于不平衡确定阈值时，确定已经发生空燃比缸内不平衡状态。 空燃比传感器当从空燃比变为富（或相反方向变化）时的输出响应性，当该输出响应性低时，“传感器响应性增加电压为 高于空燃比检测电压“被施加在排气侧电极层和气氛侧电极层之间。

公开(公告)号：US09732657B2

公开(公告)日：2017-08-15

申请号：US13993734

申请日：2010-12-24

Applicant: Keiichiro Aoki ,  Takanori Sasaki ,  Go Hayashita

Inventor： Keiichiro Aoki ,  Takanori Sasaki ,  Go Hayashita

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

CPC classification number: F01N11/007 ,  F02D41/123 ,  F02D41/1454 ,  F02D41/1476 ,  F02D2041/2051 ,  G01N27/407

Abstract: 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.

公开(公告)号：US20150369156A1

公开(公告)日：2015-12-24

申请号：US14763022

申请日：2013-01-29

Applicant: Keiichiro AOKI ,  Go HAYASHITA

Inventor： Go HAYASHITA ,  Keiichiro AOKI

IPC: F02D41/14 ,  F02D41/02

CPC classification number: F02D41/1455 ,  F02D41/0235 ,  F02D41/1401 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/1473 ,  G01N27/41

Abstract: This control device for an internal combustion engine is equipped with: an air/fuel ratio sensor provided to the exhaust passage of an internal combustion engine; and an engine control device that controls the internal combustion engine on the basis of the sensor output current of the air/fuel ratio sensor. The air/fuel ratio sensor is equipped with: a gas chamber to be measured, into which exhaust gas flows; a reference cell for which the reference cell output current varies according to the air/fuel ratio of the exhaust gas inside the gas chamber to be measured; and a pump cell that, according to the pump current, pumps oxygen into or out of the exhaust gas in the gas chamber to be measured. The reference cell is configured so that the applied voltage, at which the reference cell output current reaches zero, varies according to the air/fuel ratio of the exhaust gas in the gas chamber to be measured. The applied voltage in the reference cell is fixed at a constant voltage, said constant voltage being set to a voltage different to the voltage at which the reference cell output current reaches zero when the air/fuel ratio of the exhaust gas in the gas chamber to be measured is the stoichiometric air/fuel ratio.

Abstract translation: 该内燃机用控制装置具备：设置于内燃机的排气通路的空气/燃料比传感器; 以及基于空燃比传感器的传感器输出电流来控制内燃机的发动机控制装置。 空气/燃料比传感器配备有：待测量的气体室，废气流动到其中; 参考单元，其参考单元输出电流根据待测量的气室内的排气的空燃比而变化; 以及泵电池，其根据泵浦电流将氧气输入或输出待测量的气室中的废气。 参考单元被配置为使得参考单元输出电流达到零的施加电压根据待测气室中的排气的空燃比而变化。 参考单元中的施加电压被固定为恒定电压，所述恒定电压被设定为与气体室中的废气的空气/燃料比相对于参考单元的输出电流达到零的电压不同的电压 测量的是化学计量空气/燃料比。

公开(公告)号：US20150354487A1

公开(公告)日：2015-12-10

申请号：US14763592

申请日：2013-01-29

Applicant: Takanori SASAKI ,  Go HAYASHITA ,  Yuji MIYOSHI

Inventor： Takanori SASAKI ,  Go HAYASHITA ,  Yuji MIYOSHI

IPC: F02D41/14 ,  F01N3/22

CPC classification number: 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

Abstract: 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.

Abstract translation: 一种内燃机的控制装置，具备：排气净化催化剂，其设置在内燃机的排气通路中，能够吸收氧气; 下游空燃比传感器，其设置在所述排气净化催化剂的排出流动方向的下游; 以及发动机控制装置，其响应于来自下游空燃比传感器的输出来控制内燃机。 下游空燃比传感器被配置为使得输出电流为零的施加电压响应于排气空燃比而变化，并且当排气空燃比等于理论空燃比时，以及 下游空燃比传感器中的施加电压增加，输出电流随之增加。 当通过下游空燃比传感器检测到排气的空燃比时，下游空燃比传感器中的施加电压被固定为恒定电压，该恒定电压为输出 当排气空燃比是比理论空燃比稀的预定空燃比时，电流为零。

公开(公告)号：US20140250993A1

公开(公告)日：2014-09-11

申请号：US14350685

申请日：2011-10-24

Applicant: Keiichiro Aoki ,  Go Hayashita ,  Takanori Sasaki

Inventor： Keiichiro Aoki ,  Go Hayashita ,  Takanori Sasaki

IPC: F01N11/00

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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20140075924A1

公开(公告)日：2014-03-20

申请号：US14114770

申请日：2011-05-19

Applicant: Keiichiro Aoki ,  Takanori Sasaki ,  Go Hayashita

Inventor： Keiichiro Aoki ,  Takanori Sasaki ,  Go Hayashita

IPC: F01N3/18

CPC classification number: F02D41/2474 ,  F01N3/18 ,  F02D41/0235 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/2438 ,  F02D41/2441 ,  F02D41/2454

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US10473049B2

公开(公告)日：2019-11-12

申请号：US14763566

申请日：2013-01-29

Applicant: Go Hayashita ,  Keiichiro Aoki

Inventor： Go Hayashita ,  Keiichiro Aoki

IPC: F02D41/14 ,  G01N27/406 ,  G01N27/403 ,  G01N27/407

Abstract: This control device for an internal combustion engine is equipped with: an air/fuel ratio sensor; and an engine control device that controls the internal combustion engine according to the output of the air/fuel ratio sensor. The air/fuel ratio sensor is configured so that the applied voltage at which the output current reaches zero varies according to the exhaust air/fuel ratio, and the output current increases if the applied voltage is increased at the air/fuel ratio sensor when the exhaust air/fuel ratio is the stoichiometric air/fuel ratio. When the air/fuel ratio of exhaust gas is to be detected by the air/fuel ratio sensor, the applied voltage at the air/fuel ratio sensor is fixed at a constant voltage, said constant voltage being different to the voltage at which the output current reaches zero when the exhaust air/fuel ratio is the stoichiometric air/fuel ratio, and being the voltage at which the output current reaches zero when the exhaust air/fuel ratio is different to the stoichiometric air/fuel ratio. Thus provided is a control device for an internal combustion engine that uses an air/fuel ratio sensor capable of detecting an absolute value for the air/fuel ratio of exhaust gas even if the air/fuel ratio of the exhaust gas is not the stoichiometric air/fuel ratio.