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1. 发明申请

US20160097732A1 ABNORMALITY DETERMINATION DEVICE OF FUEL PROPERTY SENSOR AND METHOD OF DETERMINING ABNORMALITY OF THE SAME 有权
标题翻译：燃油特性传感器异常判定装置及其异常检测方法
公开(公告)号：US20160097732A1
公开(公告)日：2016-04-07
申请号：US14889230
申请日：2014-05-05
申请人： Keiichiro AOKI , Kazuhiro WAKAO
发明人： Keiichiro AOKI , Kazuhiro WAKAO
IPC分类号： G01N27/22 , G01N33/22
CPC分类号： G01N27/22 , F02D19/0623 , F02D19/0634 , F02D19/084 , F02D41/0025 , F02D41/222 , F02D2200/0611 , G01N27/221 , G01N33/22 , G01N33/2852 , Y02T10/36 , Y02T10/40
摘要： An abnormality determination device is applied to an electrostatic capacitance type fuel property sensor that has a sensing section that senses an electrostatic capacitance of a fuel to be detected. The abnormality determination device of the fuel property sensor acquires a first output that is an output when a predetermined voltage is applied to the sensing section and a second output that is an output when a voltage is not applied to the sensing section. The acquired first output and second output are compared and whether or not the fuel property sensor is abnormal is determined.
摘要翻译：异常判定装置被应用于具有检测要检测的燃料的静电电容的检测部的静电电容型燃料特性传感器。燃料特性传感器的异常判定装置取得作为向检测部施加规定电压时的输出的第一输出和作为不向感测部施加电压的输出的第二输出。比较所获取的第一输出和第二输出，并确定燃料特性传感器是否异常。

2. 发明申请

US20160245723A1 ABNORMALITY DIAGNOSIS SYSTEM OF AIR-FUEL RATIO SENSOR 有权
标题翻译：空气 - 燃料比传感器异常诊断系统
公开(公告)号：US20160245723A1
公开(公告)日：2016-08-25
申请号：US15026099
申请日：2014-10-01
申请人： Hiroshi MIYAMOTO , Yasushi IWAZAKI , Keiichiro AOKI , Toru KIDOKORO
发明人： Hiroshi MIYAMOTO , Yasushi IWAZAKI , Keiichiro AOKI , Toru KIDOKORO
IPC分类号： G01M15/10
CPC分类号： G01M15/104 , F02D41/1441 , F02D41/1445 , F02D41/1454 , F02D41/1456 , F02D41/1495
摘要： The abnormality diagnosis system of an air-fuel ratio sensor comprising an exhaust purification catalyst, an upstream side air-fuel ratio sensor provided at an upstream side of the exhaust purification catalyst, a downstream air-fuel ratio sensor provided at a downstream side of the exhaust purification catalyst, and a diagnosis device diagnosing the downstream air-fuel ratio sensor for abnormality based on outputs of these air-fuel ratio sensors. The diagnosis device judges that the downstream air-fuel ratio sensor suffers from an abnormality if the output air-fuel ratio of the upstream side air-fuel ratio sensor has become a rich air-fuel ratio richer than a stoichiometric air-fuel ratio, and the output air-fuel ratio of the downstream air-fuel ratio sensor air-fuel ratio has changed from an air-fuel ratio richer than a lean judged reference air-fuel ratio to an air-fuel ratio leaner than the lead judged reference air-fuel ratio. As a result, it is possible to accurately diagnose an abnormality of a downstream air-fuel ratio sensor when using an air-fuel ratio sensor as a downstream side sensor.
摘要翻译：包括排气净化催化剂，设置在排气净化催化剂的上游侧的上游侧空燃比传感器的空燃比传感器的异常诊断系统，设置在排气净化催化剂的下游侧的下游空燃比传感器排气净化催化剂和基于这些空燃比传感器的输出诊断用于异常的下游空燃比传感器的诊断装置。如果上游侧空燃比传感器的输出空燃比变得比理论空燃比更浓的浓空燃比，则诊断装置判断下游空燃比传感器发生异常，下游空燃比传感器空燃比的输出空燃比从比稀薄判定基准空燃比更浓的空燃比变更为比导向判定基准空燃比稀少的空燃比，燃料比。结果，当使用空燃比传感器作为下游侧传感器时，可以准确地诊断下游空燃比传感器的异常。

3. 发明申请

US20160160778A1 DIAGNOSIS SYSTEM OF INTERNAL COMBUSTION ENGINE 有权
标题翻译：内燃机诊断系统
公开(公告)号：US20160160778A1
公开(公告)日：2016-06-09
申请号：US14900849
申请日：2013-06-26
申请人： Hiroshi MIYAMOTO , Keiichiro AOKI , Yasushi IWAZAKI
发明人： Hiroshi MIYAMOTO , Keiichiro AOKI , Yasushi IWAZAKI
IPC分类号： F02D41/14 , F01N3/10
CPC分类号： F02D41/1495 , F01N3/10 , F01N3/106 , F02D41/126 , F02D41/1439 , F02D41/1456 , F02D41/222 , G01N27/41
摘要： An internal combustion engine comprises an exhaust purification catalyst and an air-fuel ratio sensor arranged at a downstream side of the exhaust purification catalyst, stops or decreases a feed of fuel as fuel cut control, and controls an air-fuel ratio of exhaust gas to a rich air-fuel ratio after the end of the fuel cut control as post reset rich control. The diagnosis system calculates a first characteristic of change of air-fuel ratio at the time when the output air-fuel ratio first passes a first air-fuel ratio region leaner than a stoichiometric air-fuel ratio and a second characteristic of change of air-fuel ratio at the time when the output air-fuel ratio first passes a second air-fuel ratio region including a stoichiometric air-fuel ratio. The diagnosis system diagnoses the abnormality of the air-fuel ratio sensor based on the first characteristic of change of air-fuel ratio and the second characteristic of change of air-fuel ratio. As a result, it is possible to suppress the effects of the change of state of the exhaust purification catalyst while accurately diagnosing the abnormality of deterioration of response of a downstream side air-fuel ratio sensor.
摘要翻译：内燃机包括排气净化催化剂和布置在排气净化催化剂的下游侧的空燃比传感器，停止或减少作为燃料切断控制的燃料进料，并将废气的空燃比控制为燃油切断控制结束后的空燃比较高，作为后复位浓缩控制。诊断系统计算当输出空燃比首先通过比理论空燃比稀少的第一空燃比区域和空气燃料比变化的第二特性时的空燃比变化的第一特性，输出空燃比首先通过包含理论空燃比的第二空燃比区域时的燃料比。诊断系统基于空燃比变化的第一特性和空燃比变化的第二特征来诊断空燃比传感器的异常。结果，能够精确地诊断下游侧空燃比传感器的响应的劣化的异常，能够抑制排气净化催化剂的状态变化的影响。

4. 发明申请

US20160138504A1 DIAGNOSIS SYSTEM OF INTERNAL COMBUSTION ENGINE 有权
标题翻译：内燃机诊断系统
公开(公告)号：US20160138504A1
公开(公告)日：2016-05-19
申请号：US14900792
申请日：2013-06-26
申请人： Hiroshi MIYAMOTO , Yuji MIYOSHI , Yasushi IWAZAKI , Toru KIDOKORO , Keiichiro AOKI
发明人： Hiroshi MIYAMOTO , Yuji MIYOSHI , Yasushi IWAZAKI , Toru KIDOKORO , Keiichiro AOKI
IPC分类号： F02D41/12 , F01N3/08 , F02D41/14
CPC分类号： F02D41/126 , F01N3/08 , F01N13/009 , F01N2560/025 , F01N2560/14 , F01N2900/0416 , F02D41/1439 , F02D41/1441 , F02D41/1456 , F02D41/1495
摘要： An internal combustion engine comprises an exhaust purification catalyst and an air-fuel ratio sensor arranged at a downstream side of the exhaust purification catalyst, stops or decreases a feed of fuel as fuel cut control, and controls an air-fuel ratio of exhaust gas to a rich air-fuel ratio after the end of the fuel cut control as post reset rich control. A first characteristic of change of air-fuel ratio at the time the output air-fuel ratio first passes a first air-fuel ratio region and a second characteristic of change of air-fuel ratio at the time when the output air-fuel ratio first passes a second air-fuel ratio region different from the first air-fuel ratio region are calculated. The diagnosis system judges any one of normality, abnormality, and whether a hold should be put on judgment for the state of the air-fuel ratio sensor, based on the first characteristic of change of air-fuel ratio and, if it is judged that a hold should be put on judgment, judges if the state of the air-fuel ratio sensor is normal or abnormal based on the second characteristic of change of air-fuel ratio. As a result, it is possible to suppress the effects of the change of state of the exhaust purification catalyst while accurately diagnosing the abnormality of deterioration of response of a downstream side air-fuel ratio sensor.
摘要翻译：内燃机包括排气净化催化剂和布置在排气净化催化剂的下游侧的空燃比传感器，停止或减少作为燃料切断控制的燃料进料，并将废气的空燃比控制为燃油切断控制结束后的空燃比较高，作为后复位浓缩控制。输出空燃比首先通过第一空燃比区域时的空燃比变化的第一特征，以及输出空燃比首先通过时的空燃比变化的第二特性计算与第一空燃比区域不同的第二空燃比区域。基于空燃比变化的第一特征，诊断系统判断空气 - 燃料比传感器的状态的正常性，异常性以及是否应该判断保持状态，并且如果判断为应判断暂停状态，根据空燃比变化的第二特征判断空燃比传感器的状态是正常还是异常。结果，能够精确地诊断下游侧空燃比传感器的响应的劣化的异常，能够抑制排气净化催化剂的状态变化的影响。

5. 发明申请

US20160017828A1 CONTROL SYSTEM OF INTERNAL COMBUSTION ENGINE 有权
标题翻译：内燃机控制系统
公开(公告)号：US20160017828A1
公开(公告)日：2016-01-21
申请号：US14763555
申请日：2013-01-29
申请人： Go HAYASHITA , Keiichiro AOKI
发明人： Go HAYASHITA , Keiichiro AOKI
IPC分类号： F02D41/14
CPC分类号： F02D41/1454 , F02D41/1401 , F02D41/1441 , F02D41/1456 , G01N27/4065 , G01N27/419
摘要： 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.
摘要翻译：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。

6. 发明申请

US20160138506A1 DIAGNOSIS SYSTEM OF INTERNAL COMBUSTION ENGINE 有权
标题翻译：内燃机诊断系统
公开(公告)号：US20160138506A1
公开(公告)日：2016-05-19
申请号：US14900645
申请日：2013-06-26
申请人： Hiroshi MIYAMOTO , Keiichiro AOKI , Yasushi IWAZAKI , TOYOTA JIDOSHA KABUSHIKI KAISHA
发明人： Hiroshi MIYAMOTO , Keiichiro AOKI , Yasushi IWAZAKI
IPC分类号： F02D41/14 , F01N11/00 , F01N3/10 , F02D41/02
CPC分类号： F02D41/1495 , F01N3/10 , F01N11/007 , F01N13/009 , F01N2550/02 , F01N2900/0416 , F01N2900/1624 , F02D41/0295 , F02D41/123 , F02D41/1441 , F02D41/1454 , F02D2041/228 , F02D2200/0814 , F02D2200/0816 , Y02T10/47
摘要： An internal combustion engine comprises an exhaust purification catalyst arranged in an exhaust passage of the internal combustion engine and being able to store oxygen in inflowing exhaust gas and an air-fuel ratio sensor arranged at a downstream side of the exhaust purification catalyst in a direction of exhaust flow and detecting an air-fuel ratio of exhaust gas flowing out from the exhaust purification catalyst and stops or decreases a feed of fuel to a combustion chamber as fuel cut control. The abnormality diagnosis system calculates a characteristic of change of an air-fuel ratio based on an output air-fuel ratio output from the air-fuel ratio sensor at the time when the output air-fuel ratio first passes a part of an air-fuel ratio region of a stoichiometric air-fuel ratio or more after an end of the fuel cut control, and diagnoses abnormality of the air-fuel ratio sensor based on the characteristic of change of the air-fuel ratio. As a result, the diagnosis system can diagnose the abnormality of deterioration of response of the downstream side air-fuel ratio sensor when necessary without fail when performing fuel cut control.
摘要翻译：一种内燃机，其特征在于，具备排气净化催化剂，该排气净化催化剂配置在内燃机的排气通路内，能够在流入排气中存储氧气，以及配置在排气净化催化剂的下游侧的空燃比传感器，并且检测从排气净化催化剂流出的废气的空燃比，并且将作为燃料切断控制的燃料供给停止或减少到燃烧室。异常诊断系统基于在输出空燃比首先通过空燃比的一部分时从空燃比传感器输出的输出空燃比来计算空燃比变化的特性燃料切断控制结束后的化学计量空燃比以上的比率区域，并且基于空燃比变化的特性来诊断空燃比传感器的异常。因此，当进行燃料切断控制时，诊断系统可以在需要时诊断下游侧空燃比传感器的响应恶化的异常。

7. 发明申请

US20150369156A1 CONTROL SYSTEM OF INTERNAL COMBUSTION ENGINE 有权
标题翻译：内燃机控制系统
公开(公告)号：US20150369156A1
公开(公告)日：2015-12-24
申请号：US14763022
申请日：2013-01-29
申请人： Keiichiro AOKI , Go HAYASHITA
发明人： Go HAYASHITA , Keiichiro AOKI
IPC分类号： F02D41/14 , F02D41/02
CPC分类号： F02D41/1455 , F02D41/0235 , F02D41/1401 , F02D41/1441 , F02D41/1456 , F02D41/1473 , G01N27/41
摘要： 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.
摘要翻译：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。

8. 发明申请

US20090019834A1 CATALYST DETERIORATION DEGREE ACQUIRING APPARATUS IN INTERNAL COMBUSTION ENGINE 有权
标题翻译：内燃机中催化剂测定装置获取装置
公开(公告)号：US20090019834A1
公开(公告)日：2009-01-22
申请号：US12133473
申请日：2008-06-05
申请人： Keiichiro AOKI
发明人： Keiichiro AOKI
IPC分类号： F01N11/00 , F02D45/00
CPC分类号： F02D41/187 , F01N3/0807 , F01N11/00 , F01N2550/03 , F02D41/0295 , F02D41/1408 , F02D41/1475 , F02D2200/0816 , Y02T10/20 , Y02T10/47
摘要： The apparatus obtains a decreasing gradient of the maximum oxygen storing quantity Cmax with respect to the increase in an air flow rate Ga on the basis of two maximum oxygen storing quantities Cmax, which are respectively estimated in case where the air flow rate Ga assumes two different values, and the two values of the air flow rate Ga. As the deterioration degree of the catalyst unit 53 increases, the decreasing gradient increases. When the deterioration degree of the catalyst unit 53 is the same, the decreasing gradient tends to be the same, even if the degree of the response of the change in the output from a downstream air-fuel-ratio sensor 67 varies. Accordingly, the obtained decreasing gradient can be a value correctly indicating the deterioration degree of the catalyst unit 53.
摘要翻译：该设备基于两个最大氧气存储量Cmax，相对于空气流量Ga的增加获得最大氧气存储量Cmax的减小梯度，其分别在空气流量Ga呈现两种不同的情况下估计值和空气流量Ga的两个值。随着催化剂单元53的劣化程度增加，梯度增加。当催化剂单元53的劣化程度相同时，即使下游空燃比传感器67的输出的变化的响应程度发生变化，倾斜梯度倾向于相同。因此，所得到的减小梯度可以是正确地表示催化剂单元53的劣化程度的值。

9. 发明申请

US20160017829A1 CONTROL SYSTEM OF INTERNAL COMBUSTION ENGINE 审中-公开
标题翻译：内燃机控制系统
公开(公告)号：US20160017829A1
公开(公告)日：2016-01-21
申请号：US14763566
申请日：2013-01-29
申请人： Go HAYASHITA , Keiichiro AOKI
发明人： Go HAYASHITA , Keiichiro AOKI
IPC分类号： F02D41/14
CPC分类号： F02D41/1454 , F02D41/1401 , F02D41/1441 , F02D41/1456 , G01N27/403 , G01N27/4065 , G01N27/4076
摘要： 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.
摘要翻译：该内燃机的控制装置配备有：空燃比传感器; 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/燃料比传感器被配置为使得输出电流达到零的施加电压根据排气/燃料比而变化，并且如果当空气/燃料比传感器的施加电压增加时，输出电流增加排气/燃料比是理论空燃比。当空燃比传感器检测排气的空气/燃料比时，将空气/燃料比传感器的施加电压固定为恒定电压，所述恒定电压与输出的电压不同当排气/燃料比是化学计量空气/燃料比时，当排气/燃料比不同于理论空燃比时，电流达到零时，电流达到零。因此，即使废气的空气/燃料比不是化学计量空气，也可以使用能够检测废气的空气/燃料比的绝对值的空气/燃料比传感器的内燃机的控制装置 /燃料比。

10. 发明申请

US20150337752A1 CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 审中-公开
标题翻译：内燃机控制装置
公开(公告)号：US20150337752A1
公开(公告)日：2015-11-26
申请号：US14441681
申请日：2013-05-24
申请人： Keiichiro AOKI , Go HAYASHITA
发明人： Keiichiro AOKI , Go HAYASHITA
IPC分类号： F02D41/14
CPC分类号： F02D41/1454 , F02D41/1456 , G01N27/4065 , G01N27/4072
摘要： A sensor for detecting oxygen concentration in exhaust gas or an air-fuel ratio provided with a solid electrolyte body, an exhaust gas side electrode being disposed on one side of the solid electrolyte body and being in contact with the exhaust gas, an atmosphere side electrode being disposed on the other side of the solid electrolyte body and being in contact with the atmosphere, and an electric circuit applying a reference voltage between these electrodes is arranged in an engine exhaust passage. The sensor for detecting the oxygen concentration in the exhaust gas or the air-fuel ratio has a characteristic in which an output current continues to increase without having a limiting current region when the voltage applied between the electrodes is increased while the air-fuel ratio is constant. The air-fuel ratio is controlled based on the output current of the sensor for detecting the oxygen concentration in the exhaust gas or the air-fuel ratio.
摘要翻译：一种用于检测废气中的氧浓度的传感器或设置有固体电解质体的空燃比，排气侧电极设置在固体电解质体的一侧并与废气接触的气体侧电极设置在固体电解质体的另一侧并与大气接触，并且在这些电极之间施加参考电压的电路布置在发动机排气通道中。用于检测排气中的氧浓度的传感器或空燃比具有当电极之间施加的电压增加时输出电流继续增加而不具有限制电流区域的特性，而空燃比为不变。基于用于检测排气中的氧浓度的传感器的输出电流或空燃比来控制空燃比。

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