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71. 发明授权

US07720595B2 Abnormality diagnostic device for air-fuel ratio sensor, and control method for the device 失效
标题翻译：空燃比传感器异常诊断装置及装置的控制方法
公开(公告)号：US07720595B2
公开(公告)日：2010-05-18
申请号：US12078627
申请日：2008-04-02
申请人： Yasushi Iwazaki
发明人： Yasushi Iwazaki
IPC分类号： G06F19/00 , G06G7/70
CPC分类号： F02D41/1495 , F01N3/101 , F01N13/009 , F01N2560/025 , F01N2560/14 , F02D41/1454 , F02D41/1458 , Y02T10/22
摘要： An abnormality diagnostic device for an air-fuel ratio sensor that detects the air-fuel ratio of exhaust gas of an internal combustion engine is provided. The abnormality diagnostic device includes: a device that an device that models a system extending from a fuel injection valve to the air-fuel ratio sensor by using a first order response delay element and a waste time element, and that identifies at least a waste time of the waste time element based on an input given to the air-fuel ratio sensor and an output obtained from the air-fuel ratio sensor; and another device that performs determination about an abnormality of the waste time based on the identified waste time.
摘要翻译：提供一种用于检测内燃机的排气的空燃比的空燃比传感器的异常诊断装置。异常诊断装置包括：装置，其通过使用一级响应延迟元件和废物时间元素对从燃料喷射阀延伸到空燃比传感器的系统进行建模，并且至少识别废物时间基于对空燃比传感器的输入和从空燃比传感器获得的输出的废物时间要素; 以及基于所识别的浪费时间来执行关于废弃时间的异常的确定的另一装置。

72. 发明申请

US20080189008A1 Abnormality diagnostic device and abnormality diagnostic method for air-fuel ratio sensor 失效
标题翻译：空燃比传感器异常诊断装置及异常诊断方法
公开(公告)号：US20080189008A1
公开(公告)日：2008-08-07
申请号：US12068322
申请日：2008-02-05
申请人： Yasushi Iwazaki
发明人： Yasushi Iwazaki
IPC分类号： F02D41/04 , F02D35/00 , G01M15/10
CPC分类号： F02D41/1495 , F02D41/123 , F02D41/1454 , F02D41/1458 , F02D41/222 , F02D2041/1433 , G01M15/10
摘要： A system extending from a fuel injection valve to an air-fuel ratio sensor is modeled by using a first order response delay element. Parameters of the first order response delay element T, k are identified based on an input u(t) based on an input air-fuel ratio that occurs when the input air-fuel ratio is relatively sharply changed in accordance with an engine operation requirement, and an output y(t) of the air-fuel ratio sensor that changes in response to a change in the input air-fuel ratio. Then, an abnormality of characteristics (response rate and output) of the air-fuel ratio sensor is determined based on the identified parameter.
摘要翻译：从燃料喷射阀延伸到空燃比传感器的系统通过使用一阶响应延迟元件来建模。基于根据发动机运转要求输入空燃比相对急剧变化时的输入空燃比，基于输入u（t）来识别一阶响应延迟元件T，k的参数，以及响应于输入空燃比的变化而变化的空燃比传感器的输出y（t）。然后，基于所识别的参数来确定空燃比传感器的特性（响应率和输出）的异常。

73. 发明授权

US09726103B2 Fuel injection amount control apparatus for an internal combustion engine 有权
公开(公告)号：US09726103B2
公开(公告)日：2017-08-08
申请号：US13701922
申请日：2010-06-07
申请人： Yasushi Iwazaki , Hiroshi Miyamoto , Tatsuro Shimada , Isao Nakajima , Yoshihisa Oda , Takuya Matsumoto , Masashi Hakariya
发明人： Yasushi Iwazaki , Hiroshi Miyamoto , Tatsuro Shimada , Isao Nakajima , Yoshihisa Oda , Takuya Matsumoto , Masashi Hakariya
IPC分类号： B60T7/12 , G05D1/00 , F02D41/30 , F02D41/00 , F02D41/10 , F02D41/18 , F02D41/14
CPC分类号： F02D41/30 , F02D41/0085 , F02D41/0235 , F02D41/0245 , F02D41/0255 , F02D41/064 , F02D41/10 , F02D41/1441 , F02D41/1454 , F02D41/1475 , F02D41/182 , F02D41/2496 , F02D2200/02 , F02D2200/021 , F02D2200/04 , F02D2200/0802
摘要： A fuel injection amount control apparatus comprises an air-fuel ratio sensor disposed between an exhaust gas merging portion and an upstream catalyst. The control apparatus performs a feedback correction on an amount of fuel to be injected by the fuel injection valve so that an air-fuel ratio represented by the output value of the upstream air-fuel ratio sensor becomes equal to a target air-fuel ratio set at stoichiometric air-fuel ratio. The control apparatus obtains an air-fuel ratio imbalance indicating value, which becomes larger as a difference in air-fuel ratio of each of the mixtures supplied to each of the combustion chambers among the cylinders becomes larger, and performs an increasing correction to the instructed fuel injection amount in such a manner that an air-fuel ratio determined by the instructed fuel injection amount becomes richer than the stoichiometric air-fuel ratio as the obtained air-fuel ratio imbalance indicating value increases.

74. 发明授权

US09435279B2 Inter-cylinder air-fuel ratio variation abnormality detection apparatus 有权
标题翻译：缸内空燃比变动异常检测装置
公开(公告)号：US09435279B2
公开(公告)日：2016-09-06
申请号：US14223418
申请日：2014-03-24
申请人： Yasushi Iwazaki , Kenji Suzuki
发明人： Yasushi Iwazaki , Kenji Suzuki
IPC分类号： F02D41/00 , F02D41/14
CPC分类号： F02D41/1454 , F02D41/0085
摘要： When two abnormal cylinders are causing variation abnormality, these abnormal cylinders are identified. A parameter correlated with a degree of fluctuation of output from an air-fuel ratio sensor installed in an exhaust passage common to a plurality of cylinders is calculated. Based on the calculated parameter, inter-cylinder air-fuel ratio variation abnormality is detected. The following steps are carried out: (A) a step of forcibly changing amounts of fuel injected for two of the plurality of cylinders and calculating the parameter, (B) a step of changing the two cylinders to other two cylinders and repeating the step (A), and (C) a step of identifying two cylinders causing variation abnormality based on a plurality of the parameters calculated in the steps (A) and (B).
摘要翻译：当两个异常气缸引起变异异常时，会识别这些异常气瓶。计算与安装在多个气缸共用的排气通道中的空燃比传感器的输出的波动程度相关的参数。基于计算出的参数，检测到缸间空燃比变化异常。执行以下步骤：（A）强制改变为多个气缸中的两个气缸喷射的燃料量并计算参数的步骤，（B）将两个气缸改变为其他两个气缸的步骤，并重复步骤（A）和（C）基于在步骤（A）和（B）中计算出的多个参数来识别引起变异异常的两个气缸的步骤。

75. 发明申请

US20140283801A1 INTER-CYLINDER AIR-FUEL RATIO VARIATION ABNORMALITY DETECTION APPARATUS FOR MULTICYLINDER INTERNAL COMBUSTION ENGINE 有权
标题翻译：多缸内燃机的气缸内空燃比变化异常检测装置
公开(公告)号：US20140283801A1
公开(公告)日：2014-09-25
申请号：US14212400
申请日：2014-03-14
申请人： Kenji Suzuki , Hiroshi Miyamoto , Yasushi Iwazaki , Senji Kato
发明人： Kenji Suzuki , Hiroshi Miyamoto , Yasushi Iwazaki , Senji Kato
IPC分类号： F02D41/14
CPC分类号： F02D41/1495 , F02D41/0085 , F02D41/1441 , F02D41/1456 , F02D41/2438
摘要： A first parameter correlated with a degree of fluctuation of output from an air-fuel ratio sensor is calculated, and whether or not the calculated first parameter has a value between a predetermined primary determination upper-limit value α1H and a primary determination lower-limit value is determined. Such forced active control as reduces an air-fuel ratio shift in one of the cylinders which is subjected to a most significant air-fuel ratio shift is performed when the calculated first parameter is determined to have a value between the predetermined primary determination upper-limit value and the primary determination lower-limit value. A first parameter is calculated while the forced active control is in execution. The calculated first parameter is compared with a predetermined secondary determination value to determine whether or not variation abnormality is present.
摘要翻译：计算与空燃比传感器的输出的波动程度相关的第一参数，并且计算出的第一参数是否具有预定的一次判定上限值α1H和一次判定下限值之间的值决心，决意，决定。当所计算出的第一参数被确定为具有预定的主要确定上限之间的值时，执行这种强制主动控制，以减少经受最大空燃比移动的一个气缸中的空燃比偏移值和主要判定下限值。在强制主动控制正在执行时计算第一个参数。将计算出的第一参数与预定的次级判定值进行比较，以确定是否存在变化异常。

76. 发明申请

US20140156205A1 INTER-CYLINDER AIR-FUEL RATIO VARIATION ABNORMALITY DETECTION APPARATUS FOR MULTICYLINDER INTERNAL COMBUSTION ENGINE 有权
标题翻译：多缸内燃机的气缸内空燃比变化异常检测装置
公开(公告)号：US20140156205A1
公开(公告)日：2014-06-05
申请号：US14095567
申请日：2013-12-03
申请人： Kenji Suzuki , Hiroshi Miyamoto , Yasushi Iwazaki
发明人： Kenji Suzuki , Hiroshi Miyamoto , Yasushi Iwazaki
IPC分类号： F02D41/14
CPC分类号： F02D41/1495 , F02D41/0085 , F02D41/1456
摘要： A first parameter correlated with a degree of a variation in the output from the air-fuel ratio sensor is calculated. A possible range of a second parameter representing a degree of a variation in air-fuel ratio among the cylinders is determined based on the first parameter. The first parameter is calculated with an air-fuel ratio of a predetermined cylinder forcibly changed. A difference between the unchanged first parameter and the forcibly changed first parameter is determined. A first characteristic representing a relation between the second parameter and the difference is determined based on the possible range of the second parameter and the difference. One of the determination value and the first parameter calculated before the forced change is corrected based on inclination of the determined first characteristic.
摘要翻译：计算与空燃比传感器的输出的变化程度相关的第一参数。基于第一参数来确定表示气缸中的空燃比的变化程度的第二参数的可能范围。第一参数是以预定的气缸的空燃比强制变化的方式计算的。确定未改变的第一参数和强制改变的第一参数之间的差异。基于第二参数的可能范围和差异来确定代表第二参数和差异之间的关系的第一特征。基于确定的第一特性的倾斜度来校正在强制改变之前计算的确定值和第一参数中的一个。

77. 发明授权

US08583348B2 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，燃料喷射量控制装置和多缸内燃机的燃料喷射量控制方法
公开(公告)号：US08583348B2
公开(公告)日：2013-11-12
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： F02D45/00
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。

78. 发明申请

US20120024272A1 FUEL INJECTION AMOUNT CONTROL SYSTEM AND FUEL INJECTION AMOUNT CONTROL DEVICE FOR MULTI-CYLINDER INTERNAL COMBUSTION ENGINE 有权
标题翻译：燃油喷射控制系统和燃油喷射量控制装置多缸内燃机
公开(公告)号：US20120024272A1
公开(公告)日：2012-02-02
申请号：US13194923
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 , F02D41/1401 , F02D41/1441 , F02D41/182 , F02D41/2454 , F02D2041/1432 , F02D2200/101
摘要： A fuel injection amount control system acquires a pre-correction 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 obtains a value (intake air amount correlation value) corresponding to the intake air amount and a value (engine speed correlation value) corresponding to the engine speed over a period in which the pre-correction air-fuel ratio imbalance index value is acquired. Also, a post-correction air-fuel ratio imbalance index value is acquired by correcting the pre-correction air-fuel ratio imbalance index value based on the intake air amount correlation value and the engine speed correlation value, and the air-fuel ratio of the engine is controlled based on the post-correction air-fuel ratio imbalance index value.
摘要翻译：燃料喷射量控制系统获取基于上游空燃比传感器的输出值随着气缸中的空燃比的不均匀度增加而增加的预校正空燃比不平衡指数值，以及获取与获取预校正空燃比不平衡指数值的期间对应的与进气量对应的值（进气量相关值）和与发动机转速对应的值（发动机转速相关值）。此外，通过基于进气量相关值和发动机转速相关值校正预校正空燃比不平衡指数值来获取校正后空燃比不平衡指数值，并且，基于校正后的空燃比不平衡指数值来控制发动机。

79. 发明申请

US20080154528A1 Abnormality diagnostic device and abnormality diagnostic method for air-fuel ratio sensor 有权
标题翻译：空燃比传感器异常诊断装置及异常诊断方法
公开(公告)号：US20080154528A1
公开(公告)日：2008-06-26
申请号：US12003021
申请日：2007-12-19
申请人： Yasushi Iwazaki
发明人： Yasushi Iwazaki
IPC分类号： G06F19/00 , G01N33/22
CPC分类号： G01M15/104
摘要： In an abnormality diagnostic device and an abnormality diagnostic device for an air-fuel ratio sensor that detects the air-fuel ratio of exhaust gas of an internal combustion engine, a system extending from a fuel injection valve to the air-fuel ratio sensor is model by a first order response delay, and a parameter in the first order response delay is identified based on an input air-fuel ratio that is given to the air-fuel ratio sensor and an output air-fuel ratio that is output from the air-fuel ratio sensor. Then, the presence/absence of abnormality regarding a predetermined characteristic of the air-fuel ratio sensor is determined based on the parameter identified. Thus, abnormality is diagnosed regarding individual characteristics of the air-fuel ratio sensor.
摘要翻译：在检测内燃机的排气的空燃比的空燃比传感器的异常诊断装置和异常诊断装置中，从燃料喷射阀向空燃比传感器延伸的系统为模型通过一阶响应延迟，并且基于给予空燃比传感器的输入空燃比和从空燃比传感器输出的输出空燃比来识别一阶响应延迟中的参数，燃油比传感器然后，基于所确定的参数来确定关于空燃比传感器的预定特性的异常的存在/不存在。因此，关于空燃比传感器的个体特性来诊断异常。

80. 发明授权

US06711932B2 Abnormality diagnosis system and method for oxygen sensor 有权
标题翻译：氧传感器异常诊断系统及方法
公开(公告)号：US06711932B2
公开(公告)日：2004-03-30
申请号：US10176527
申请日：2002-06-24
申请人： Yasushi Iwazaki , Kazuhiro Yamada , Takashi Ogawa
发明人： Yasushi Iwazaki , Kazuhiro Yamada , Takashi Ogawa
IPC分类号： G01N2700
CPC分类号： G01N33/007 , G01N27/4175
摘要： An oxygen sensor includes a detector to be positioned between the ambient air and the exhaust gas, which generates a voltage corresponding to a difference in oxygen partial pressure therebetween. A controller performs monitoring of the output voltage from the oxygen sensor and determines an occurrence of fracture in the detector when detecting the generation of a lean signal, which is a signal indicating the above-described difference in the oxygen partial pressure is small, being frequently more than a certain value, and carries out an abnormality diagnosis to the oxygen sensor.
摘要翻译：氧传感器包括位于环境空气和废气之间的检测器，其产生对应于它们之间的氧分压差的电压。控制器执行对氧传感器的输出电压的监视，并且当检测到产生贫信号时，确定检测器中的断裂的发生，该信号是表示上述氧分压差小的信号，频繁地超过一定值，对氧传感器进行异常诊断。

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