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1. 发明申请

US20120046910A1 EXHAUST GAS SENSOR ABNORMALITY DIAGNOSTIC DEVICE 有权
标题翻译：排气传感器异常诊断装置
公开(公告)号：US20120046910A1
公开(公告)日：2012-02-23
申请号：US13287460
申请日：2011-11-02
申请人： Yasushi IWAZAKI , Hiroshi Sawada , Takahiro Joko , Masaya Kawaji
发明人： Yasushi IWAZAKI , Hiroshi Sawada , Takahiro Joko , Masaya Kawaji
IPC分类号： G06F15/00
CPC分类号： G01N27/4175 , F02D41/1454 , F02D41/222
摘要： An exhaust gas sensor abnormality diagnostic device includes an exhaust gas sensor, and a judgment means that judges whether execution conditions are established for making an abnormality diagnosis of element breakage in the exhaust gas sensor. The device also includes an abnormality diagnosis means that makes the abnormality diagnosis in accordance with an output signal generated by the exhaust gas sensor. Further, when the integrated value of intake air amounts of an internal combustion engine is not smaller than a predetermined value, the judgment means judges that the execution conditions are established. The abnormality diagnosis means cancels the establishment of the execution conditions when an intake air amount of the internal combustion engine remains less than a predetermined value for a predetermined period of time.
摘要翻译：废气传感器异常诊断装置包括排气传感器，以及判断装置，其判断在废气传感器中进行元件破损的异常诊断的执行条件。该装置还包括根据由排气传感器产生的输出信号进行异常诊断的异常诊断装置。此外，当内燃机的进气量的积分值不小于预定值时，判断装置判定执行条件成立。当内燃机的进气量保持小于预定值一段预定时间时，异常诊断装置取消执行条件的建立。

2. 发明申请

US20090260347A1 APPARATUS AND METHOD FOR DETECTING ABNORMAL AIR-FUEL RATIO VARIATION AMONG CYLINDERS OF MULTI-CYLINDER INTERNAL COMBUSTION ENGINE 有权
标题翻译：用于检测多缸内燃机缸体异常空气 - 燃料比变化的装置和方法
公开(公告)号：US20090260347A1
公开(公告)日：2009-10-22
申请号：US12416262
申请日：2009-04-01
申请人： Yasushi IWAZAKI , Toru KIDOKORO , Hiroshi SAWADA , Keiji IMAMURA , Fumihiko NAKAMURA
发明人： Yasushi IWAZAKI , Toru KIDOKORO , Hiroshi SAWADA , Keiji IMAMURA , Fumihiko NAKAMURA
IPC分类号： F01N11/00 , F01N3/10
CPC分类号： F01N11/00 , F01N3/10 , F01N2550/02 , F01N2560/06 , Y02T10/47
摘要： An apparatus and a method for detecting abnormal air-fuel ratio variation among cylinders of a multi-cylinder internal combustion engine are provided. The apparatus includes: a catalyst that is provided in an exhaust passage of the multi-cylinder internal combustion engine; a catalyst temperature detection unit that detects a temperature of the catalyst; a catalyst temperature estimation unit that estimates a temperature of the catalyst based on an engine operating state; and an abnormality detection unit that determines whether abnormal air-fuel ratio variation among the cylinders has occurred based on the detected temperature of the catalyst and the estimated temperature of the catalyst.
摘要翻译：提供一种用于检测多缸内燃机的气缸之间的异常空燃比变动的装置和方法。该装置包括：设置在多气缸内燃机的排气通路中的催化剂; 催化剂温度检测单元，其检测催化剂的温度; 催化剂温度估计单元，其基于发动机运转状态来估计催化剂的温度; 以及异常检测单元，其基于检测到的催化剂的温度和催化剂的估计温度来判定是否发生了气缸之间的异常空燃比变动。

3. 发明申请

US20110283981A1 APPARATUS FOR ACQUIRING RESPONSIBILITY OF OXYGEN CONCENTRATION SENSOR 有权
标题翻译：获取氧气浓度传感器责任的设备
公开(公告)号：US20110283981A1
公开(公告)日：2011-11-24
申请号：US13090814
申请日：2011-04-20
申请人： Yusuke KAWAMURA , Takuya MATSUMOTO , Takashi NAKAMURA , Makoto SATO , Toru KIDOKORO , Hiroshi SAWADA , Yasushi IWAZAKI
发明人： Yusuke KAWAMURA , Takuya MATSUMOTO , Takashi NAKAMURA , Makoto SATO , Toru KIDOKORO , Hiroshi SAWADA , Yasushi IWAZAKI
IPC分类号： F02D28/00
CPC分类号： F02D41/1441 , F01N3/101 , F01N11/007 , F01N2560/025 , F02D41/0235 , F02D41/1456 , F02D41/1495 , F02D2041/1431 , F02D2200/0816 , Y02T10/22 , Y02T10/47
摘要： The fact that “with respect to a process in which the output value of a downstream air-fuel ratio sensor (sensor output value) is inverted from the minimum output value to the maximum output value during execution of an active control, the local maximum and minimum values of the secondary differential value of the sensor output value is widely affected by the size of the response delay of the downstream air-fuel ratio sensor and the size of the degree of the degradation of the three-way catalyst” is utilized. By preliminarily acquiring and memorizing, as maps, these relations obtained through an experiment, and applying the “local maximum and minimum values of the secondary differential value of the sensor output value” calculated from the transition of the sensor output value acquired during execution of the active control to the maps, the response delay (time constant) of the downstream air-fuel ratio sensor is acquired.
摘要翻译： “关于在执行主动控制期间下游空燃比传感器的输出值（传感器输出值）从最小输出值反转到最大输出值的过程的局部最大值和传感器输出值的二次微分值的最小值受下游空燃比传感器的响应延迟的大小和三元催化剂的劣化程度的大小的影响。通过预先获取并记忆通过实验获得的这些关系，并且应用从在执行期间获取的传感器输出值的转变计算出的“传感器输出值的二次微分值的局部最大值和最小值” 主动控制地图，获取下游空燃比传感器的响应延迟（时间常数）。

4. 发明申请

US20100211290A1 ABNORMALITY DIAGNOSTIC DEVICE AND ABNORMALITY DIAGNOSTIC METHOD FOR MULTICYLINDER INTERNAL COMBUSTION ENGINE 审中-公开
标题翻译：非线性诊断装置和多中心内燃机异常诊断方法
公开(公告)号：US20100211290A1
公开(公告)日：2010-08-19
申请号：US12706464
申请日：2010-02-16
申请人： Toru KIDOKORO , Hiroshi SAWADA , Yasushi IWAZAKI , Koichi KIMURA , Hiroshi MIYAMOTO , Fumihiko NAKAMURA , Keiji IMAMURA
发明人： Toru KIDOKORO , Hiroshi SAWADA , Yasushi IWAZAKI , Koichi KIMURA , Hiroshi MIYAMOTO , Fumihiko NAKAMURA , Keiji IMAMURA
IPC分类号： F02D41/30
CPC分类号： F02D41/1495 , F02D41/1408 , F02D41/1474 , F02D41/222
摘要： A fuel injection amount from fuel injection valves is actively controlled and an input air-fuel ratio is caused forcibly to oscillate. A system from the fuel injection valves to the air-fuel ratio sensor is simulated by a first order delay system, and a gain and time constant are identified on the basis of the input air-fuel ratio relating to the model and an output air-fuel ratio obtained from the air-fuel ratio sensor. The presence of an air-fuel ratio abnormal variation is diagnosed on the basis of whether or not the identified values of the gain and the time constant are less than a first and second predetermined values respectively.
摘要翻译：主动地控制来自燃料喷射阀的燃料喷射量，并且强制地引起输入空燃比的振荡。从燃料喷射阀到空燃比传感器的系统由一阶延迟系统模拟，并且基于与模型相关的输入空燃比和输出空气 - 燃料比传感器来识别增益和时间常数，从空燃比传感器获得的燃料比。基于增益和时间常数的识别值是否小于第一和第二预定值来诊断空燃比异常变化的存在。

5. 发明申请

US20090211350A1 APPARATUS AND METHOD FOR DETECTING ABNORMALITY OF INTER-CYLINDER AIR-FUEL RATIO DISPERSION IN MULTI-CYLINDER INTERNAL COMBUSTION ENGINE 有权
标题翻译：用于检测多缸内燃机内部气缸空燃比分散异常的装置和方法
公开(公告)号：US20090211350A1
公开(公告)日：2009-08-27
申请号：US12393597
申请日：2009-02-26
申请人： Yasushi IWAZAKI , Toru Kidokoro , Hiroshi Sawada , Keiji Imamura , Fumihiko Nakamura
发明人： Yasushi IWAZAKI , Toru Kidokoro , Hiroshi Sawada , Keiji Imamura , Fumihiko Nakamura
IPC分类号： G01M15/10
CPC分类号： G01M15/104 , F02D41/0085 , F02D41/1441 , F02D41/1456
摘要： An apparatus or a method for detecting an abnormality of inter-cylinder air-fuel ratio dispersion in a multi-cylinder internal combustion engine according to the invention is equipped with a catalytic element that purifies exhaust gas of hydrogen, a first air-fuel ratio sensor that detects an air-fuel ratio of exhaust gas that has not passed through the catalytic element, a second air-fuel ratio sensor that detects an air-fuel ratio of exhaust gas that has passed through the catalytic element, a device that detects an abnormality of inter-cylinder air-fuel ratio dispersion on the basis of a divergence state of a detected value of a second air-fuel ratio to a lean side from a detected value of a first air-fuel ratio, and a device that forcibly reduces fuel injection amounts in cylinders individually when an abnormality on dispersion is detected by the abnormality detector, detects a divergence state of the detected value of the second air-fuel ratio to the lean side from the detected value of the first air-fuel ratio at this time, and specifies as an abnormal cylinder that one of the cylinders in which a value indicating this divergence state has become smaller than at a time of detection of the abnormality of dispersion.
摘要翻译：根据本发明的用于检测多缸内燃机中的缸内空燃比分散异常的装置或方法装备有净化氢气废气的催化元件，第一空燃比传感器检测未通过催化剂元件的废气的空燃比，检测通过催化元件的废气的空燃比的第二空燃比传感器，检测异常的装置基于第一空燃比对第一空燃比的检测值与第一空燃比的检测值的偏差状态的液压缸间空燃比的分散，以及强制地减少燃料的装置当由异常检测器检测到异常异常时，分别在气缸中的喷射量，从检测到的va检测到第二空气燃料比的检测值与偏斜侧的发散状态此时指定第一空燃比，并且指定作为异常气缸，其中指示该发散状态的值的气缸中的一个已经变得比检测到色散异常时的小。

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

US20120024273A1 FUEL INJECTION AMOUNT CONTROL SYSTEM, FUEL INJECTION AMOUNT CONTROL DEVICE, AND FUEL INJECTION AMOUNT CONTROL METHOD OF MULTI-CYLINDER INTERNAL COMBUSTION ENGINE 有权
标题翻译：燃油喷射量控制系统，燃油喷射量控制装置和燃油喷射量多缸内燃机的控制方法
公开(公告)号：US20120024273A1
公开(公告)日：2012-02-02
申请号：US13194929
申请日：2011-07-30
申请人： Yasushi IWAZAKI , Hiroshi MIYAMOTO
发明人： Yasushi IWAZAKI , Hiroshi MIYAMOTO
IPC分类号： F02D41/30
CPC分类号： F02D41/1456 , F02D41/0085 , F02D41/10 , F02D41/1401 , F02D41/1441 , F02D41/182 , F02D41/2454 , F02D2041/1432
摘要： A fuel injection amount control system acquires an air-fuel ratio imbalance index value that increases as the degree of ununiformity in the air-fuel ratio among cylinders increases, based on an output value of an upstream air-fuel ratio sensor, and acquires an imbalance index learned value by performing a first-order lag filtering operation for removing noise, on the air-fuel ratio imbalance index value. Also, the fuel injection amount is increased based on the imbalance index learned value. In the filtering operation, the time constant of the filter is set to a smaller value when a magnitude of a difference between the current value and the last value of the air-fuel ratio imbalance index value is equal to or larger than a threshold value.
摘要翻译：燃料喷射量控制系统基于上游空燃比传感器的输出值获取随着气缸中的空燃比的不均匀度的增加程度而增加的空燃比不平衡指数值，并且获取不平衡通过对空燃比不平衡指数值执行去除噪声的一阶滞后滤波操作来获得索引学习值。另外，基于不平衡指数学习值，燃料喷射量增加。在过滤操作中，当空气 - 燃料比不平衡指数值的当前值和最后值之间的差的大小等于或大于阈值时，滤波器的时间常数被设定为较小的值。

8. 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。

9. 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。

10. 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。

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