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31. 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。

32. 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。

33. 发明申请

US20120323466A1 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测定装置
公开(公告)号：US20120323466A1
公开(公告)日：2012-12-20
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： F02D41/26 , F02D41/30
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，因此能够进行高精度的气缸间空燃比不平衡判定。

34. 发明授权

US08452517B2 Air-fuel ratio imbalance among cylinders determining apparatus for an internal combustion engine 有权
标题翻译：用于内燃机的气缸确定装置之间的空燃比不平衡
公开(公告)号：US08452517B2
公开(公告)日：2013-05-28
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 , F02D41/00 , F02D41/14
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在检测到的新检测到的当前检测空燃比abyfs与检测出采样时间ts前的空燃比abyfsold之间的检测空燃比变化率ΔAF（检测空燃比变化率ΔAF），检测到的空燃比变化的平均值速率DeltaAF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。

35. 发明申请

US20110054761A1 CYLINDER-TO-CYLINDER AIR/FUEL RATIO IMBALANCE DETERMINATION SYSTEM OF INTERNAL COMBUSTION ENGINE 有权
标题翻译：内燃机气缸排气量/燃油比重测定系统
公开(公告)号：US20110054761A1
公开(公告)日：2011-03-03
申请号：US12847300
申请日：2010-07-30
申请人： Hiroshi SAWADA , Yasushi Iwazaki , Hiroshi Miyamoto , Fumihiko Nakamura
发明人： Hiroshi SAWADA , Yasushi Iwazaki , Hiroshi Miyamoto , Fumihiko Nakamura
IPC分类号： F02D41/30
CPC分类号： F02D41/0085 , F02D41/1441 , F02D41/1475
摘要： A cylinder-to-cylinder air/fuel ratio imbalance determination system obtains an imbalance determination parameter that increases or decreases as a difference between the air/fuel ratios of different cylinders increases, based on output values of an air/fuel ratio sensor, and makes a cylinder-to-cylinder A/F imbalance determination, based on the result of comparison between the imbalance determination parameter and a threshold value for imbalance determination. The determination system changes the amount of fuel injected into one or more of the cylinders so as to create a forced imbalance condition in which the air/fuel ratio of a particular cylinder deviates from the air/fuel ratio of the remaining cylinders, and obtains an air/fuel ratio sensor evaluation parameter (e.g., rate of change ΔAF of the detected air/fuel ratio) in this condition. Then, the determination system determines whether the air/fuel ratio sensor is adequate for making a cylinder-to-cylinder A/F imbalance determination, by comparing the evaluation parameter with a reference parameter (an evaluation parameter obtained based on output values of a reference air/fuel ratio sensor in the same forced imbalance condition).
摘要翻译：基于空/燃比传感器的输出值，气缸对气缸空气/燃料比不平衡确定系统获得不同气缸的空气/燃料比之间的差异增大或减小的不平衡确定参数，并且基于不平衡确定参数和不平衡确定的阈值之间的比较结果，确定缸到缸的A / F不平衡。确定系统改变喷射到一个或多个气缸中的燃料量，以产生特定气缸的空气/燃料比偏离剩余气缸的空气/燃料比的强制不平衡状态，并获得在这种情况下，空气/燃料比传感器评估参数（例如，检测到的空气/燃料比的变化率和Dgr; AF）。然后，判定系统通过将评价参数与参考参数（基于参考的输出值获得的评估参数）进行比较来判定空气/燃料比传感器是否足以进行气缸到气缸A / F不平衡的确定空气/燃料比传感器处于相同的强制不平衡状态）。

36. 发明申请

US20130073184A1 INTER-CYLINDER AIR-FUEL RATIO IMBALANCE DETERMINING APPARATUS FOR INTERNAL COMBUSTION ENGINE 有权
标题翻译：内燃机空燃比不确定度测定装置
公开(公告)号：US20130073184A1
公开(公告)日：2013-03-21
申请号：US13612310
申请日：2012-09-12
申请人： Hiroshi Miyamoto , Yasushi Iwazaki , Shuntaro Okazaki , Kenji Suzuki
发明人： Hiroshi Miyamoto , Yasushi Iwazaki , Shuntaro Okazaki , Kenji Suzuki
IPC分类号： F02D41/26 , F02D41/30
CPC分类号： F02D41/0085 , F02D41/1443 , F02D41/1454 , F02D41/1456 , F02D41/1495
摘要： An inter-cylinder air-fuel ratio imbalance determining apparatus for an internal combustion engine includes an air-fuel ratio sensor; fuel injection valves; an instructed fuel injection amount control unit; and an imbalance determination unit configured: to acquire a time-differential-value corresponding value that is an amount of change per predetermined time in an output value of the sensor or a detected air-fuel ratio represented by the output value; to acquire a positive gradient corresponding value based on a positive value of the time-differential-value corresponding value; to acquire a negative gradient corresponding value based on a negative value of the time-differential-value corresponding value; to determine an imbalance determination threshold based on a magnitude of a ratio of the negative gradient corresponding value to the positive gradient corresponding value; and to determine whether inter-cylinder air-fuel ratio imbalance has occurred by comparing a magnitude of the negative gradient corresponding value with the imbalance determination threshold.
摘要翻译：用于内燃机的气缸间空燃比不平衡确定装置包括空燃比传感器; 燃油喷射阀; 指示燃料喷射量控制单元; 以及不平衡确定单元，被配置为获取作为所述传感器的输出值中的每预定时间的变化量的时间微分值对应值或由所述输出值表示的检测到的空燃比; 基于时间微分值对应值的正值来获取正梯度对应值; 基于时间 - 微分值对应值的负值来获取负梯度对应值; 基于负梯度对应值与正梯度对应值的比值的大小来确定不平衡确定阈值; 并且通过将负梯度对应值的大小与不平衡确定阈值进行比较来确定是否发生了缸间空燃比不平衡。

37. 发明授权

US09194316B2 Inter-cylinder air-fuel ratio imbalance determining 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：US09194316B2
公开(公告)日：2015-11-24
申请号：US13612310
申请日：2012-09-12
申请人： Hiroshi Miyamoto , Yasushi Iwazaki , Shuntaro Okazaki , Kenji Suzuki
发明人： Hiroshi Miyamoto , Yasushi Iwazaki , Shuntaro Okazaki , Kenji Suzuki
IPC分类号： G06F7/00 , G06F17/00 , F02D41/00 , F02D41/14
CPC分类号： F02D41/0085 , F02D41/1443 , F02D41/1454 , F02D41/1456 , F02D41/1495
摘要： An inter-cylinder air-fuel ratio imbalance determining apparatus for an internal combustion engine includes an air-fuel ratio sensor; fuel injection valves; an instructed fuel injection amount control unit; and an imbalance determination unit configured: to acquire a time-differential-value corresponding value that is an amount of change per predetermined time in an output value of the sensor or a detected air-fuel ratio represented by the output value; to acquire a positive gradient corresponding value based on a positive value of the time-differential-value corresponding value; to acquire a negative gradient corresponding value based on a negative value of the time-differential-value corresponding value; to determine an imbalance determination threshold based on a magnitude of a ratio of the negative gradient corresponding value to the positive gradient corresponding value; and to determine whether inter-cylinder air-fuel ratio imbalance has occurred by comparing a magnitude of the negative gradient corresponding value with the imbalance determination threshold.
摘要翻译：用于内燃机的气缸间空燃比不平衡确定装置包括空燃比传感器; 燃油喷射阀; 指示燃料喷射量控制单元; 以及不平衡确定单元，被配置为获取作为所述传感器的输出值中的每预定时间的变化量的时间微分值对应值或由所述输出值表示的检测到的空燃比; 基于时间微分值对应值的正值来获取正梯度对应值; 基于时间 - 微分值对应值的负值来获取负梯度对应值; 基于负梯度对应值与正梯度对应值的比值的大小来确定不平衡确定阈值; 并且通过将负梯度对应值的大小与不平衡确定阈值进行比较来确定是否发生了缸间空燃比不平衡。

38. 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.

39. 发明授权

US08826642B2 Device for purifying exhaust gas of internal combustion engine 有权
标题翻译：内燃机废气净化装置
公开(公告)号：US08826642B2
公开(公告)日：2014-09-09
申请号：US13640452
申请日：2010-04-13
申请人： Takeho Aisaka , Takashi Nakamura , Takuya Matsumoto , Makoto Sato , Hiroshi Sawada , Yasushi Iwazaki , Yusuke Kawamura
发明人： Takeho Aisaka , Takashi Nakamura , Takuya Matsumoto , Makoto Sato , Hiroshi Sawada , Yasushi Iwazaki , Yusuke Kawamura
IPC分类号： F01N3/00
CPC分类号： F01N11/007 , F01N3/0864 , F01N9/00 , F01N2560/025 , F01N2900/0402 , F01N2900/1624 , F02D41/0295 , F02D41/2451 , F02D41/2477 , F02D41/2483 , F02D2200/0816 , Y02T10/20 , Y02T10/47
摘要： An electronic control device calculates the maximum actual oxygen storage capacity of a catalyst. The gradient of a linear expression formed between the catalyst temperature and the maximum oxygen storage capacity of the catalyst is stored for each degradation level of the catalyst. The gradient can be learned in accordance with the same temperature of the catalyst and the maximum actual oxygen storage capacity. When the maximum actual oxygen storage capacity is calculated, it is revised in accordance with the temperature of the catalyst, a reference temperature, the linear expression, and the learned gradient. The revised maximum oxygen storage capacity which is the maximum oxygen storage capacity when the temperature of the catalyst during the same calculation period is equal to the reference temperature is then calculated. If a response delay is detected in the output of an oxygen sensor, the gradient of the learned linear expression is discarded.
摘要翻译：电子控制装置计算催化剂的最大实际储氧容量。催化剂的每个降解水平存储催化剂温度和催化剂的最大储氧能力之间形成的线性表达式的梯度。可以根据催化剂的相同温度和最大实际储氧容量来了解梯度。当计算最大实际储氧容量时，根据催化剂的温度，参考温度，线性表达式和学习梯度进行修正。然后计算在相同计算期间催化剂的温度等于参考温度时最大储氧容量的修正最大储氧容量。如果在氧传感器的输出中检测到响应延迟，则舍弃所学习的线性表达式的梯度。

40. 发明申请

US20130199161A1 DEVICE FOR PURIFYING EXHAUST GAS OF INTERNAL COMBUSTION ENGINE 有权
标题翻译：用于净化内燃机排气的装置
公开(公告)号：US20130199161A1
公开(公告)日：2013-08-08
申请号：US13640452
申请日：2010-04-13
申请人： Takeho Aisaka , Takashi Nakamura , Takuya Matsumoto , Makoto Sato , Hiroshi Sawada , Yasushi Iwazaki , Yusuke Kawamura
发明人： Takeho Aisaka , Takashi Nakamura , Takuya Matsumoto , Makoto Sato , Hiroshi Sawada , Yasushi Iwazaki , Yusuke Kawamura
IPC分类号： F01N11/00
CPC分类号： F01N11/007 , F01N3/0864 , F01N9/00 , F01N2560/025 , F01N2900/0402 , F01N2900/1624 , F02D41/0295 , F02D41/2451 , F02D41/2477 , F02D41/2483 , F02D2200/0816 , Y02T10/20 , Y02T10/47
摘要： An electronic control device calculates the maximum actual oxygen storage capacity of a catalyst. The gradient of a linear expression formed between the catalyst temperature and the maximum oxygen storage capacity of the catalyst is stored for each degradation level of the catalyst. The gradient can be learned in accordance with the same temperature of the catalyst and the maximum actual oxygen storage capacity. When the maximum actual oxygen storage capacity is calculated, it is revised in accordance with the temperature of the catalyst, a reference temperature, the linear expression, and the learned gradient. The revised maximum oxygen storage capacity which is the maximum oxygen storage capacity when the temperature of the catalyst during the same calculation period is equal to the reference temperature is then calculated. If a response delay is detected in the output of an oxygen sensor, the gradient of the learned linear expression is discarded.
摘要翻译：电子控制装置计算催化剂的最大实际储氧容量。催化剂的每个降解水平存储催化剂温度和催化剂的最大储氧能力之间形成的线性表达式的梯度。可以根据催化剂的相同温度和最大实际储氧容量来了解梯度。当计算最大实际储氧容量时，根据催化剂的温度，参考温度，线性表达式和学习梯度进行修正。然后计算在同一计算期间催化剂的温度等于参考温度时的最大储氧容量的最大储氧容量。如果在氧传感器的输出中检测到响应延迟，则舍弃所学习的线性表达式的梯度。

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