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1. 发明授权

US08024105B2 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气缸异常空燃比变动的装置和方法
公开(公告)号：US08024105B2
公开(公告)日：2011-09-20
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： F02D41/22
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。

2. 发明授权

US08047064B2 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：多缸内燃机缸内空燃比分散异常检测装置及方法
公开(公告)号：US08047064B2
公开(公告)日：2011-11-01
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。

3. 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。

4. 发明申请

US20110288739A1 APPARATUS FOR DETERMINING AN AIR-FUEL RATIO IMBALANCE AMONG CYLINDERS OF AN INTERNAL COMBUSTION ENGINE 有权
标题翻译：用于确定内燃机缸内空燃比不平衡的装置
公开(公告)号：US20110288739A1
公开(公告)日：2011-11-24
申请号：US13146354
申请日：2009-02-03
申请人： Toru Kidokoro , Hiroshi Sawada , Yasushi Iwazaki , Fumihiko Nakamura
发明人： Toru Kidokoro , Hiroshi Sawada , Yasushi Iwazaki , Fumihiko Nakamura
IPC分类号： F02D41/14
CPC分类号： F02D41/0085 , F02D41/0042 , F02D41/1441 , F02D41/1454 , F02D41/2454 , F02M25/08 , F02M35/10216 , F02M35/10386
摘要： An apparatus for determining an air-fuel ratio imbalance among cylinders including an upstream air-fuel ratio sensor, a catalytic converter, and a downstream air-fuel ratio sensor disposed at positions downstream of an exhaust gas aggregated portion, calculates a sub feedback amount to have an output value of the downstream air-fuel ratio sensor coincides with a value corresponding to the stoichiometric air-fuel ratio, and performs an air-fuel ratio feedback control to have an air-fuel ratio of a mixture supplied to an engine based on the sub feedback amount and the output value of the upstream air-fuel ratio sensor.
摘要翻译：一种用于确定包括上游空燃比传感器，催化转化器和布置在废气聚集部分下游的下游空燃比传感器的气缸之间的空燃比不平衡的装置，计算副反馈量至具有下游空燃比传感器的输出值与理论空燃比对应的值一致，进行空燃比反馈控制，使得供给发动机的混合气的空燃比基于副反馈量和上游空燃比传感器的输出值。

5. 发明授权

US08903625B2 Air-fuel ratio imbalance among cylinders determining apparatus for a multi-cylinder internal combustion engine 有权
标题翻译：用于多缸内燃机的气缸确定装置之间的空燃比不平衡
公开(公告)号：US08903625B2
公开(公告)日：2014-12-02
申请号：US13133044
申请日：2008-12-05
申请人： Toru Kidokoro , Hiroshi Sawada , Yasushi Iwazaki , Fumihiko Nakamura
发明人： Toru Kidokoro , Hiroshi Sawada , Yasushi Iwazaki , Fumihiko Nakamura
IPC分类号： G06F7/00 , F02D41/00 , F02D41/14
CPC分类号： F02D41/1441 , F02D41/0085 , F02D2041/1418
摘要： A judging device comprises a catalyst, an upstream air/fuel ratio sensor having an air/fuel ratio sensing element covered with a diffusion resistance layer, and a downstream air/fuel ratio sensor. The judging device performs main feedback control to equalize the air/fuel ratio indicated by the output value of the upstream air/fuel ratio sensor to an upstream target air/fuel ratio and sub-feedback control to equalize the output value of the downstream air/fuel ratio sensor to a downstream target value. The judging device acquires “an imbalance judging parameter” which increases with “the increase of the difference between the amount of hydrogen contained in the exhaust gas before the exhaust gas passes through the catalyst and that after the exhaust gas passes through the catalyst” according to the sub-feedback amount. When the imbalance judging parameter is larger than an abnormality judgment threshold, the judging device judges that an air/fuel ratio imbalance among the cylinders has occurred. The judging device does not make judgment on air/fuel ratio imbalance among the cylinders if a predetermined judgment prohibition condition is satisfied, for example, if the flow of the exhaust gas is a predetermined value or more.
摘要翻译：判断装置包括催化剂，具有覆盖有扩散电阻层的空气/燃料比感测元件的上游空燃比传感器和下游空气/燃料比传感器。判断装置执行主反馈控制，以将由上游空燃比传感器的输出值表示的空燃比与上游目标空燃比和副反馈控制进行平衡，以使下游空气/燃料比传感器的输出值相等，燃料比传感器到下游目标值。判断装置获取“不平衡判定参数”，其随着“排气通过催化剂之前的排气中所含的氢的量与废气通过催化剂之后的氢气的差异的增加”增加，根据子反馈量。当不平衡判定参数大于异常判断阈值时，判断装置判断出气缸之间的空气/燃料比不平衡发生。如果满足预定的判定禁止条件，例如如果排气的流量为预定值以上，则判断装置不判断气缸之间的空气/燃料比不平衡。

6. 发明授权

US08447497B2 Apparatus for determining an air-fuel ratio imbalance among cylinders of an internal combustion engine 有权
标题翻译：用于确定内燃机的气缸之间的空燃比失衡的装置
公开(公告)号：US08447497B2
公开(公告)日：2013-05-21
申请号：US13496623
申请日：2009-09-18
申请人： Yasushi Iwazaki , Hiroshi Miyamoto , Fumihiko Nakamura , Hiroshi Sawada , Toru Kidokoro
发明人： Yasushi Iwazaki , Hiroshi Miyamoto , Fumihiko Nakamura , Hiroshi Sawada , Toru Kidokoro
IPC分类号： B60T7/12
CPC分类号： F02D41/00 , F02D41/0042 , F02D41/0085 , F02D41/1454 , F02D41/2441 , F02D41/2454
摘要： An apparatus for determining an air-fuel ratio imbalance among cylinders based on an output value of an air-fuel ratio sensor, an imbalance determination parameter which becomes larger or smaller as a difference among air-fuel ratios becomes larger, and performs determining an air-fuel ratio imbalance among cylinders based on a result of a comparison between the imbalance determination parameter and a imbalance determination threshold. The determining apparatus calculates a purge correction coefficient which compensates for a change in the air-fuel ratio due to an evaporated fuel gas which is generated in a fuel tank, while the evaporated fuel gas is being introduced into an intake passage, and corrects a fuel injection amount with the purge correction coefficient FPG.
摘要翻译：一种用于基于空燃比传感器的输出值来确定气缸之间的空燃比不平衡的装置，作为空燃比之差变大或变小的不平衡确定参数变大，并且执行空气 - 基于不平衡确定参数和不平衡确定阈值之间的比较的结果，气缸之间的燃料比不平衡。确定装置计算净化校正系数，其补偿由于在燃料箱中产生的蒸发燃料气体而引起的空燃比的变化，同时蒸发的燃料气体被引入进气通道中，并且校正燃料喷射量与净化校正系数FPG。

7. 发明授权

US08370043B2 Apparatus for determining an air-fuel ratio imbalance among cylinders of an internal combustion engine 有权
标题翻译：用于确定内燃机的气缸之间的空燃比失衡的装置
公开(公告)号：US08370043B2
公开(公告)日：2013-02-05
申请号：US13146354
申请日：2009-02-03
申请人： Toru Kidokoro , Hiroshi Sawada , Yasushi Iwazaki , Fumihiko Nakamura
发明人： Toru Kidokoro , Hiroshi Sawada , Yasushi Iwazaki , Fumihiko Nakamura
IPC分类号： G06F19/00
CPC分类号： F02D41/0085 , F02D41/0042 , F02D41/1441 , F02D41/1454 , F02D41/2454 , F02M25/08 , F02M35/10216 , F02M35/10386
摘要： An apparatus for determining an air-fuel ratio imbalance among cylinders including an upstream air-fuel ratio sensor, a catalytic converter, and a downstream air-fuel ratio sensor disposed at positions downstream of an exhaust gas aggregated portion, calculates a sub feedback amount to have an output value of the downstream air-fuel ratio sensor coincides with a value corresponding to the stoichiometric air-fuel ratio, and performs an air-fuel ratio feedback control to have an air-fuel ratio of a mixture supplied to an engine based on the sub feedback amount and the output value of the upstream air-fuel ratio sensor.
摘要翻译：一种用于确定包括上游空燃比传感器，催化转化器和布置在废气聚集部分下游的下游空燃比传感器的气缸之间的空燃比不平衡的装置，计算副反馈量至具有下游空燃比传感器的输出值与理论空燃比对应的值一致，进行空燃比反馈控制，使得供给发动机的混合气的空燃比基于副反馈量和上游空燃比传感器的输出值。

8. 发明申请

US20110282541A1 MONITORING APPARATUS FOR A MULTI-CYLINDER INTERNAL COMBUSTION ENGINE 有权
标题翻译：多缸内燃机监控装置
公开(公告)号：US20110282541A1
公开(公告)日：2011-11-17
申请号：US13146323
申请日：2009-01-28
申请人： Toru Kidokoro , Hiroshi Sawada , Yasushi Iwazaki , Fumihiko Nakamura , Shuntaro Okazaki , Masanori Ishida
发明人： Toru Kidokoro , Hiroshi Sawada , Yasushi Iwazaki , Fumihiko Nakamura , Shuntaro Okazaki , Masanori Ishida
IPC分类号： F01N11/00
CPC分类号： F02D41/0085 , F02D41/1441 , F02D41/1495 , F02D41/2454
摘要： A monitoring apparatus including a catalytic converter, an upstream air-fuel ratio sensor, and a downstream air-fuel ratio sensor; calculates a sub feedback amount to have an air-fuel ratio represented based on an output value of the downstream air-fuel ratio sensor coincide with a stoichiometric air-fuel ratio; and controls an fuel injection amount based on an output value of the upstream air-fuel ratio sensor and the sub feedback amount, in such a manner that an air-fuel ratio of a mixture supplied to an engine coincides with the stoichiometric air-fuel ratio.
摘要翻译：一种监测装置，包括催化转化器，上游空燃比传感器和下游空燃比传感器; 计算出具有基于下游空燃比传感器的输出值表示的空燃比与副理论空燃比一致的副反馈量; 并且以提供给发动机的混合物的空燃比与理论空燃比一致的方式控制基于上游空燃比传感器的输出值和副反馈量的燃料喷射量。

9. 发明申请

US20130261934A1 APPARATUS FOR DETERMINING AN AIR-FUEL RATIO IMBALANCE AMONG CYLINDERS OF AN INTERNAL COMBUSTION ENGINE 有权
标题翻译：用于确定内燃机缸内空燃比不平衡的装置
公开(公告)号：US20130261934A1
公开(公告)日：2013-10-03
申请号：US13871249
申请日：2013-04-26
申请人： Yasushi Iwazaki , Hiroshi Miyamoto , Fumihiko Nakamura , Hiroshi Sawada , Toru Kidokoro
发明人： Yasushi Iwazaki , Hiroshi Miyamoto , Fumihiko Nakamura , Hiroshi Sawada , Toru Kidokoro
IPC分类号： F02D41/00
CPC分类号： F02D41/00 , F02D41/0042 , F02D41/0085 , F02D41/1454 , F02D41/2441 , F02D41/2454
摘要： An apparatus for determining an air-fuel ratio imbalance among cylinders based on an output value of an air-fuel ratio sensor, an imbalance determination parameter which becomes larger or smaller as a difference among air-fuel ratios becomes larger, and performs determining an air-fuel ratio imbalance among cylinders based on a result of a comparison between the imbalance determination parameter and a imbalance determination threshold. The determining apparatus calculates a purge correction coefficient which compensates for a change in the air-fuel ratio due to an evaporated fuel gas which is generated in a fuel tank, while the evaporated fuel gas is being introduced into an intake passage, and corrects a fuel injection amount with the purge correction coefficient FPG.
摘要翻译：一种用于基于空燃比传感器的输出值来确定气缸之间的空燃比不平衡的装置，作为空燃比之差变大或变小的不平衡确定参数变大，并且执行空气 - 基于不平衡确定参数和不平衡确定阈值之间的比较的结果，气缸之间的燃料比不平衡。确定装置计算净化校正系数，其补偿由于在燃料箱中产生的蒸发燃料气体而引起的空燃比的变化，同时蒸发的燃料气体被引入进气通道中，并且校正燃料喷射量与净化校正系数FPG。

10. 发明授权

US08509984B2 Monitoring apparatus for a multi-cylinder internal combustion engine 有权
标题翻译：多缸内燃机监控装置
公开(公告)号：US08509984B2
公开(公告)日：2013-08-13
申请号：US13146323
申请日：2009-01-28
申请人： Toru Kidokoro , Hiroshi Sawada , Yasushi Iwazaki , Fumihiko Nakamura , Shuntaro Okazaki , Masanori Ishida
发明人： Toru Kidokoro , Hiroshi Sawada , Yasushi Iwazaki , Fumihiko Nakamura , Shuntaro Okazaki , Masanori Ishida
IPC分类号： F02D45/00
CPC分类号： F02D41/0085 , F02D41/1441 , F02D41/1495 , F02D41/2454
摘要： A monitoring apparatus including a catalytic converter, an upstream air-fuel ratio sensor, and a downstream air-fuel ratio sensor; calculates a sub feedback amount to have an air-fuel ratio represented based on an output value of the downstream air-fuel ratio sensor coincide with a stoichiometric air-fuel ratio; and controls an fuel injection amount based on an output value of the upstream air-fuel ratio sensor and the sub feedback amount, in such a manner that an air-fuel ratio of a mixture supplied to an engine coincides with the stoichiometric air-fuel ratio.
摘要翻译：一种监测装置，包括催化转化器，上游空燃比传感器和下游空燃比传感器; 计算出具有基于下游空燃比传感器的输出值表示的空燃比与副理论空燃比一致的副反馈量; 并且以提供给发动机的混合物的空燃比与理论空燃比一致的方式控制基于上游空燃比传感器的输出值和副反馈量的燃料喷射量。

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