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1. 发明授权

US09115661B2 Fuel injection amount control system and fuel injection amount control device for multi-cylinder internal combustion engine 有权
标题翻译：燃油喷射量控制系统和多缸内燃机燃油喷射量控制装置
公开(公告)号：US09115661B2
公开(公告)日：2015-08-25
申请号：US13194922
申请日：2011-07-30
申请人： Yasushi Iwazaki , Hiroshi Miyamoto
发明人： Yasushi Iwazaki , Hiroshi Miyamoto
IPC分类号： G06F7/00 , G06F17/00 , F02D41/30 , F02D41/14 , F02D41/24
CPC分类号： F02D41/1441 , F02D41/2493 , F02D2041/1432 , Y02T10/22
摘要： A fuel injection amount control system corrects the amount of fuel injected from each fuel injection valve in a feedback manner, based on an output value of an upstream air-fuel ratio sensor, so that the air-fuel ratio of exhaust gas flowing into a three-way catalyst coincides with a target air-fuel ratio. Also, the control system performs a high-pass filtering operation on the output value of the upstream air-fuel ratio sensor, so as to obtain a post-high-pass-filtering output value by removing a component that varies with variations in the center air-fuel ratio of the engine, from the output value of the upstream air-fuel ratio sensor. Then, the control system acquires an air-fuel ratio imbalance index value that increases as the degree of ununiformity in the air-fuel ratio among cylinders is larger, based on the post-high-pass-filtering output 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，以反馈方式校正从每个燃料喷射阀喷射的燃料量，使得流入三个燃料喷射量的排气的空燃比 - 催化剂与目标空燃比一致。此外，控制系统对上游空燃比传感器的输出值进行高通滤波操作，以便通过去除随中心变化而变化的分量来获得后高通滤波输出值发动机的空燃比从上游空燃比传感器的输出值。然后，控制系统基于后高通滤波输出值，获取随着气缸中的空燃比的不均匀程度越大而增加的空燃比不平衡指数值。

2. 发明授权

US08965665B2 Air-fuel ratio imbalance determining apparatus among cylinders for an internal combustion engine 有权
标题翻译：用于内燃机的气缸中的空燃比不平衡确定装置
公开(公告)号：US08965665B2
公开(公告)日：2015-02-24
申请号：US13389082
申请日：2009-08-06
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： F02D41/22 , F02D41/00 , F02D41/14
CPC分类号： F02D41/008 , F02D41/1456
摘要： An air-fuel ratio imbalance among cylinders determining apparatus according to the present invention obtains an output Vabyfs of an air-fuel ratio sensor disposed at a portion downstream of an exhaust gas aggregated portion of an exhaust gas passage, and obtains a second-order differential value d2AF (a change rate of a change rate of a detected air-fuel ratio abyfs) of a detected air-fuel ratio abyfs represented by the air-fuel ratio sensor output Vabyfs. The imbalance determining apparatus determines that an air-fuel ratio imbalance state among cylinders is occurring when a detected air-fuel ratio second-order differential corresponding value (for example, a second-order differential value d2AF per se) obtained in accordance with the second-order differential value d2AF is larger than a first threshold value.
摘要翻译：根据本发明的气缸确定装置之间的空燃比不平衡获得设置在排气通道的排气集中部分下游的空燃比传感器的输出Vabyfs，并获得二阶微分由空燃比传感器输出Vabyfs表示的检测空燃比abyfs的值d2AF（检测空燃比abyfs的变化率的变化率）。不平衡确定装置确定当根据第二个所获得的检测到的空燃比二阶差分对应值（例如，二阶差分值d2AF本身）发生气缸之间的空燃比不平衡状态时 - 阶微分值d2AF大于第一阈值。

3. 发明申请

US20130144510A1 FUEL INJECTION AMOUNT CONTROL APPARATUS FOR AN INTERNAL COMBUSTION ENGINE 有权
标题翻译：燃油喷射量控制装置内燃机
公开(公告)号：US20130144510A1
公开(公告)日：2013-06-06
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： F02D41/30
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 includes an air-fuel ratio sensor which is disposed between an exhaust gas merging portion HK and an upstream catalyst. The control apparatus performs a feedback correction on an amount of fuel to be injected by the fuel injection valve in such a manner that an air-fuel ratio represented by an output value of an upstream air-fuel ratio sensor becomes equal to a target air-fuel ratio which is 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 amount of fuel to be injected by the injection valve in such a manner that an air-fuel ratio becomes a richer air-fuel ratio than the stoichiometric air-fuel ratio as the obtained air-fuel ratio imbalance indicating value becomes larger.
摘要翻译：燃料喷射量控制装置包括设置在废气合流部HK和上游催化剂之间的空燃比传感器。控制装置对由燃料喷射阀喷射的燃料量进行反馈校正，使得由上游空燃比传感器的输出值表示的空燃比变得等于目标空气燃料比传感器，燃料比设定为化学计量空燃比。控制装置获得空气 - 燃料比不平衡指示值变大，随着供给到各气缸中的每个燃烧室的混合物的空燃比的差异变大，并且对量的增加校正的燃料，以使空燃比成为比所获得的空燃比不平衡指示值变大的理论空燃比高得多的空燃比的方式由喷射阀喷射。

4. 发明授权

US08401766B2 Inter-cylinder air-fuel ratio imbalance determination apparatus for internal combustion engine 有权
标题翻译：用于内燃机的缸内空燃比不平衡确定装置
公开(公告)号：US08401766B2
公开(公告)日：2013-03-19
申请号：US13514764
申请日：2009-12-09
申请人： Yasushi Iwazaki , Hiroshi Sawada , Hiroshi Miyamoto , Fumihiko Nakamura , Keiichiro Aoki
发明人： Yasushi Iwazaki , Hiroshi Sawada , Hiroshi Miyamoto , Fumihiko Nakamura , Keiichiro Aoki
IPC分类号： G06F19/00 , F02D41/14 , G01N27/407
CPC分类号： F02D41/0085 , F02D41/1454 , F02D41/1494 , F02D2250/14
摘要： An inter-cylinder air-fuel ratio imbalance determination apparatus (determination apparatus) according to the present invention obtains, based on the output value of the air-fuel ratio sensor, an imbalance determination parameter which becomes larger as an air-fuel ratio fluctuation of an exhaust gas passing through a position at which the air-fuel ratio sensor is disposed becomes larger, during a parameter obtaining period. The determination apparatus energizes the heater of the air-fuel ratio sensor in such a manner that a temperature of the air-fuel ratio element during the parameter obtaining period is higher than a temperature of the air-fuel ratio element during a period other than the parameter obtaining period. Accordingly, the imbalance determination parameter is obtained while the responsiveness of the air-fuel ratio sensor is high, and thus, the inter-cylinder air-fuel-ratio imbalance determination having a high accuracy can be made.
摘要翻译：根据本发明的气缸内空燃比不平衡判定装置（判定装置），基于空燃比传感器的输出值，获得作为空燃比变动的空气比变动变大的不平衡判定参数在参数获取期间，通过设置有空燃比传感器的位置的排气变大。确定装置使空燃比传感器的加热器通电，使得参数获取期间的空燃比元件的温度比空燃比元件的温度高于空燃比元件的温度参数获取期。因此，在空燃比传感器的响应性高的同时获得不平衡确定参数，因此，可以进行具有高精度的气缸间空燃比不平衡确定。

5. 发明申请

US20120173115A1 AIR-FUEL RATIO IMBALANCE AMONG CYLINDERS DETERMINING APPARATUS FOR AN INTERNAL COMBUSTION ENGINE 有权
标题翻译：用于内燃机的气缸测定装置的空燃比不平衡
公开(公告)号：US20120173115A1
公开(公告)日：2012-07-05
申请号：US13382079
申请日：2009-07-02
申请人： Hiroshi Sawada , Fumihiko Nakamura , Hiroshi Miyamoto , Yasushi Iwazaki
发明人： Hiroshi Sawada , Fumihiko Nakamura , Hiroshi Miyamoto , Yasushi Iwazaki
IPC分类号： G01M15/10
CPC分类号： F02D41/0085 , F02D41/1454 , F02D2400/18
摘要： An air-fuel ratio imbalance among cylinders determining apparatus according to the present invention comprises an air-fuel ratio sensor having a protective cover and an air-fuel ratio detection element accommodated in the protective cover, and imbalance determining means. The imbalance determining means obtains a detected air-fuel ratio abyfs based on an output Vabyfs of the air-fuel ratio sensor every elapse of a constant sampling time ts, and obtains, as an indicating amount of air-fuel ratio change rate, a difference (detected air-fuel ratio change rate ΔAF) between a present detected air-fuel ratio abyfs which is newly detected and a previous air-fuel ratio abyfsold which was detected the sampling time ts ago, an average of the detected air-fuel ratio change rate ΔAF, and the like. The imbalance determining means determines that the air-fuel ratio imbalance among cylinders state is occurring, when a magnitude of the indicating amount of air-fuel ratio change rate is larger than an imbalance determination threshold.
摘要翻译：根据本发明的气缸确定装置之间的空燃比不平衡包括具有保护盖和容纳在保护盖中的空燃比检测元件的空燃比传感器和不平衡确定装置。不平衡确定装置根据空燃比传感器每经过一定采样时间ts的输出Vabyfs获得检测的空燃比abyfs，并且获得作为空燃比变化率的指示量的差检测到的新检测到的当前检测到的空燃比abyfs与检测到采样时间ts前的空燃比abyfsold之间的检测空燃比变化率（Dgr; AF），检测到的空气燃料的平均值比例变化率和Dgr AF等。当空燃比变化率的指示量大于不平衡判定阈值时，不平衡确定装置确定气缸状态之间的空燃比不平衡发生。

6. 发明申请

US20120022772A1 ABNORMALITY DETERMINATION SYSTEM FOR MULTI-CYLINDER INTERNAL COMBUSTION ENGINE 有权
标题翻译：多缸内燃机异常判定系统
公开(公告)号：US20120022772A1
公开(公告)日：2012-01-26
申请号：US13185015
申请日：2011-07-18
申请人： Hiroshi Miyamoto , Yasushi Iwazaki
发明人： Hiroshi Miyamoto , Yasushi Iwazaki
IPC分类号： F02D41/30 , F02D28/00
CPC分类号： F02D41/1495 , F02D41/0037 , F02D41/0085 , F02D41/1441 , F02D41/1456 , F02D41/2441 , F02D41/2454
摘要： When the ratio of the amount of vaporized fuel (purge amount) to be introduced into an intake passage of an engine from a fuel tank through a purge passage pipe, a purge control valve, etc. to the total amount of fuel (total fuel amount) to be supplied to the engine is large, an abnormality determination system acquires, as a parameter Pon, the air-fuel ratio imbalance index value that increases as the difference between the air-fuel ratios of the respective cylinders increases. When the purge amount is small relative to the total fuel amount, the determination system acquires the air-fuel ratio imbalance index value as a parameter Poff. When the difference between the parameters Pon and Poff is less than a predetermined value and at least one of these parameters is greater than a predetermined threshold value, the determination system determines that an inter-cylinder air intake amount variation abnormality is occurring.
摘要翻译：当要从燃料箱通过吹扫通道管，净化控制阀等引入发动机的进气通道中的汽化燃料量（吹扫量）与燃料总量的比例（总燃料量），异常判定系统作为参数Pon获取随着各气缸的空燃比的差增大而增加的空燃比不平衡指数值。当清除量相对于总燃料量小时，确定系统获取作为参数Poff的空燃比不平衡指数值。当参数Pon和Poff之间的差小于预定值并且这些参数中的至少一个大于预定阈值时，确定系统确定发生了气缸间进气量变化异常。

7. 发明申请

US20110271665A1 AIR-FUEL RATIO IMBALANCE AMONG CYLINDERS DETERMINING APPARATUS FOR AN INTERNAL COMBUSTION ENGINE 有权
标题翻译：用于内燃机的气缸测定装置的空燃比不平衡
公开(公告)号：US20110271665A1
公开(公告)日：2011-11-10
申请号：US13144194
申请日：2009-11-26
申请人： Yasushi Iwazaki , Hiroshi Miyamoto , Hiroshi Sawada , Keiichiro Aoki
发明人： Yasushi Iwazaki , Hiroshi Miyamoto , Hiroshi Sawada , Keiichiro Aoki
IPC分类号： F01N3/10 , G01N33/00
CPC分类号： F02D41/0085 , F02D41/1441 , F02D41/1454 , F02D41/1475 , G01N27/419
摘要： An air-fuel ratio imbalance among cylinders determining apparatus (a determining apparatus) according to an aspect of the present invention, obtains a parameter X for imbalance determination which becomes larger as a variation of an air-fuel ratio of an exhaust gas passing through a position at which the air-fuel ratio sensor is disposed becomes larger, based on an output value Vabyfs of an air-fuel ratio sensor 67. At the same time, the determining apparatus changes a target air-fuel ratio which is a target value of an air-fuel ratio of a mixture supplied to an engine to “an air-fuel ratio (a target rich air-fuel ratio AFrich or a target lean air-fuel ratio AFlean) other than a stoichiometric air-fuel ratio” from the stoichiometric air-fuel ratio. Accordingly, the determining apparatus can obtain the parameter X for imbalance determination in a state in which a responsivity of the air-fuel ratio sensor 67 is not low. As a result, it can make a determination on the air-fuel ratio imbalance among cylinders with high accuracy.
摘要翻译：根据本发明的一个方面的气缸确定装置（确定装置）之间的空燃比不平衡获得作为不平衡确定的参数X随着通过的排气的空燃比的变化而变大基于空燃比传感器67的输出值Vabyfs，设置空燃比传感器的位置变大。同时，确定装置将作为目标值的目标空燃比向发动机供给的混合物的空燃比为“理论空燃比以外的理论空燃比以外的空燃比（目标浓空燃比AFrich或目标稀空燃比AFlean）” 空燃比。因此，在空燃比传感器67的响应度不低的状态下，确定装置可以获得用于不平衡确定的参数X. 因此，可以高精度地确定气缸之间的空燃比不平衡。

8. 发明授权

US09850840B2 Diagnosis system of internal combustion engine 有权
公开(公告)号：US09850840B2
公开(公告)日：2017-12-26
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 , F02D41/14 , F01N3/08 , F01N13/00
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 electronic control unit (ECU) of an internal combustion engine, which includes an air-fuel ratio sensor arranged at a downstream side of an exhaust purification catalyst, is configured to judge if a state of the air-fuel ratio sensor is normal or abnormal based on the first characteristic of change of air-fuel ratio and, if a judgment cannot be made based on the first characteristic, the ECU is configured to judge if the state of the air-fuel ratio sensor is normal or abnormal based on a 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.

9. 发明授权

US09719449B2 Diagnosis system of internal combustion engine 有权
公开(公告)号：US09719449B2
公开(公告)日：2017-08-01
申请号：US14900645
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： F01N3/00 , F02D41/14 , F02D41/12 , F01N11/00 , F01N3/10 , F02D41/02 , F02D41/22 , F01N13/00
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.

10. 发明授权

US08833348B2 Fuel injection amount control system and fuel injection amount control device for multi-cylinder internal combustion engine 有权
标题翻译：燃油喷射量控制系统和多缸内燃机燃油喷射量控制装置
公开(公告)号：US08833348B2
公开(公告)日：2014-09-16
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： F02D41/14 , F02D41/00 , F02D41/18 , F02D41/24 , F02D41/30 , G01N27/00
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。

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