公开(公告)号：US09206754B2

公开(公告)日：2015-12-08

申请号：US14204507

申请日：2014-03-11

申请人： Toshihiro Kato ,  Yoshifumi Matsuda ,  Yoshihisa Oda ,  Masashi Hakariya ,  Masahide Okada ,  Isao Nakajima ,  Hiroaki Tsuji ,  Tokiji Ito ,  Yuya Yoshikawa

发明人： Toshihiro Kato ,  Yoshifumi Matsuda ,  Yoshihisa Oda ,  Masashi Hakariya ,  Masahide Okada ,  Isao Nakajima ,  Hiroaki Tsuji ,  Tokiji Ito ,  Yuya Yoshikawa

IPC分类号： F01N3/00 ,  F02D41/14 ,  F02D41/22 ,  F02D41/30

CPC分类号： F02D41/1441 ,  F02D41/1443 ,  F02D41/1486 ,  F02D41/221 ,  F02D41/3094

摘要： A control device of an internal combustion engine according to the present invention has units configured to inject fuel at a first predetermined ratio from first and second fuel injection valves which are provided in each of cylinders to calculate a first value indicating a degree of variation in air-fuel ratios between the cylinders based on a output of the engine, and inject fuel at a second predetermined ratio therefrom to calculate a second value in the same manner. Furthermore, the control device has a unit configured to select one mode from modes relating to abnormality in the first fuel injection valve or the second fuel injection valve on the basis of the first and second values, and calculate a value indicating the degree of the variation in the air-fuel ratios between the cylinders, thereby calculating a fuel amount of the basis of them.

摘要翻译： 根据本发明的内燃机的控制装置具有被配置为以设置在每个气缸中的第一和第二燃料喷射阀以第一预定比率喷射燃料的单元，以计算表示空气变化程度的第一值 - 基于发动机的输出的气缸之间的燃料比，并以相同的方式以其第二预定比率喷射燃料以计算第二值。 此外，控制装置具有基于第一和第二值从第一燃料喷射阀或第二燃料喷射阀的与异常相关的模式中选择一个模式的单元，并且计算表示变化程度的值 在气缸之间的空燃比中，由此计算其基础的燃料量。

公开(公告)号：US10072593B2

公开(公告)日：2018-09-11

申请号：US14769956

申请日：2014-01-21

申请人： Masahide Okada ,  Masashi Hakariya ,  Yoshifumi Matsuda ,  Yoshihisa Oda ,  Hiroaki Tsuji ,  Tokiji Ito ,  Isao Nakajima ,  Toshihiro Kato ,  Yuya Yoshikawa

发明人： Masahide Okada ,  Masashi Hakariya ,  Yoshifumi Matsuda ,  Yoshihisa Oda ,  Hiroaki Tsuji ,  Tokiji Ito ,  Isao Nakajima ,  Toshihiro Kato ,  Yuya Yoshikawa

IPC分类号： F02D41/14 ,  F02D41/30 ,  F02D41/22

CPC分类号： F02D41/1495 ,  F02D41/1441 ,  F02D41/1454 ,  F02D41/1455 ,  F02D41/1456 ,  F02D41/1475 ,  F02D41/222 ,  F02D41/30 ,  Y02T10/40

摘要： A control device of an internal combustion engine according to the present invention executes air-fuel ratio control based on an output of an air-fuel ratio sensor provided at an upstream side of a catalyst, with correction based on an output of an oxygen sensor at a downstream side of the catalyst. When it is determined that a degree of an output tendency in a predetermined lean region is not less than a predetermined lean degree, and that a degree of an output tendency in a predetermined rich region is less than a predetermined rich degree based on lean tendency and rich tendency values representing output tendencies of the oxygen sensor, a limit is set to the correction in a direction to more suppress enriching of an air-fuel ratio as a degree is larger in which the output of the oxygen sensor is shifted to a lean side.

公开(公告)号：US20140290348A1

公开(公告)日：2014-10-02

申请号：US14216004

申请日：2014-03-17

申请人： Isao Nakajima ,  Yoshifumi Matsuda ,  Yoshihisa Oda ,  Masashi Hakariya ,  Masahide Okada ,  Hiroaki Tsuji ,  Tokiji Ito ,  Tatsuro Shimada ,  Toshihiro Kato ,  Yuya Yoshikawa

发明人： Isao Nakajima ,  Yoshifumi Matsuda ,  Yoshihisa Oda ,  Masashi Hakariya ,  Masahide Okada ,  Hiroaki Tsuji ,  Tokiji Ito ,  Tatsuro Shimada ,  Toshihiro Kato ,  Yuya Yoshikawa

IPC分类号： G01M15/10

CPC分类号： G01M15/102 ,  F01N11/00 ,  F01N11/007 ,  F02D41/1454 ,  F02D41/1495 ,  F02D41/18 ,  F02D41/22 ,  F02D41/222 ,  G01M15/10 ,  G01M15/104 ,  G01N1/2252 ,  Y02T10/42 ,  Y02T10/44 ,  Y02T10/47

摘要： An abnormality detecting device of an internal combustion engine according to the present invention includes a sensor nick abnormality detecting unit configured to detect a nick abnormality in a detecting element of a downstream side sensor which is provided in a downstream side of an exhaust gas purifying catalyst in an exhaust passage and generates an output corresponding to an oxygen concentration in exhaust gas, on the basis of a matter that a distribution of an output of the downstream side sensor is biased to an area in which the air-fuel ratio is leaner than a theoretical air-fuel ratio, and an inhibiting unit configured to inhibit detection of the nick abnormality of the detecting element by the sensor nick abnormality detecting unit in the case that an intake air amount exceeds a predetermined amount.

摘要翻译： 根据本发明的内燃机的异常检测装置包括传感器切痕异常检测单元，其被配置为检测设置在排气净化催化剂的下游侧的下游侧传感器的检测元件中的切口异常 排气通道，并且基于下游侧传感器的输出的分布被偏置到空燃比比理论上更稀的区域的事物，生成对应于排气中的氧浓度的输出 以及抑制单元，其被配置为在进气量超过预定量的情况下禁止由传感器切痕异常检测单元检测到检测元件的切痕异常。

公开(公告)号：US20140290219A1

公开(公告)日：2014-10-02

申请号：US14204507

申请日：2014-03-11

申请人： Toshihiro Kato ,  Yoshifumi Matsuda ,  Yoshihisa Oda ,  Masashi Hakariya ,  Masahide Okada ,  Isao Nakajima ,  Hiroaki Tsuji ,  Tokiji Ito ,  Yuya Yoshikawa

发明人： Toshihiro Kato ,  Yoshifumi Matsuda ,  Yoshihisa Oda ,  Masashi Hakariya ,  Masahide Okada ,  Isao Nakajima ,  Hiroaki Tsuji ,  Tokiji Ito ,  Yuya Yoshikawa

IPC分类号： F02D41/14

CPC分类号： F02D41/1441 ,  F02D41/1443 ,  F02D41/1486 ,  F02D41/221 ,  F02D41/3094

摘要： A control device of an internal combustion engine according to the present invention has units configured to inject fuel at a first predetermined ratio from first and second fuel injection valves which are provided in each of cylinders to calculate a first value indicating a degree of variation in air-fuel ratios between the cylinders based on a output of the engine, and inject fuel at a second predetermined ratio therefrom to calculate a second value in the same manner. Furthermore, the control device has a unit configured to select one mode from modes relating to abnormality in the first fuel injection valve or the second fuel injection valve on the basis of the first and second values, and calculate a value indicating the degree of the variation in the air-fuel ratios between the cylinders, thereby calculating a fuel amount of the basis of them.

摘要翻译： 根据本发明的内燃机的控制装置具有被配置为以设置在每个气缸中的第一和第二燃料喷射阀以第一预定比率喷射燃料的单元，以计算表示空气变化程度的第一值 - 基于发动机的输出的气缸之间的燃料比，并以相同的方式以其第二预定比率喷射燃料以计算第二值。 此外，控制装置具有基于第一和第二值从第一燃料喷射阀或第二燃料喷射阀的与异常相关的模式中选择一个模式的单元，并且计算表示变化程度的值 在气缸之间的空燃比中，由此计算其基础的燃料量。

公开(公告)号：US08589055B2

公开(公告)日：2013-11-19

申请号：US13194915

申请日：2011-07-30

申请人： Masashi Hakariya ,  Masahide Okada

发明人： Masashi Hakariya ,  Masahide Okada

IPC分类号： F02D17/00

CPC分类号： F02D41/0085 ,  F02D41/123 ,  F02D41/1441 ,  F02D41/1446 ,  F02D41/1456 ,  F02D41/2454 ,  F02D2041/1432

摘要： The invention provides an inter-cylinder air/fuel ratio imbalance determination apparatus and method. The determination apparatus includes a “limiting current type air/fuel ratio sensor”, and acquires a pre-correction index quantity that is greater the greater the degree of non-uniformity of the cylinder-by-cylinder air/fuel ratios, on the basis of a time differential value of the output value of the air/fuel ratio sensor. The determination apparatus obtains as the correction-purpose output value an average value of the output value obtained during a fuel-cut operation. The correction-purpose output value is greater the higher the responsiveness of the air/fuel ratio sensor. The determination apparatus acquires an air/fuel ratio imbalance index value by correcting the pre-correction index quantity so that the pre-correction index quantity is smaller the greater the correction-purpose output value. It is determined that an inter-cylinder air/fuel ratio imbalance state has occurred, when the air/fuel ratio imbalance index value is greater than or equal to an imbalance determination threshold value.

摘要翻译： 本发明提供一种气缸内空气/燃料比不平衡确定装置和方法。 确定装置包括“极限电流型空气/燃料比传感器”，并且基于每个缸缸空气/燃料比的不均匀度越大获得预校正指数量越大 的空气/燃料比传感器的输出值的时间微分值。 确定装置获得在燃料切断操作期间获得的输出值的平均值作为校正用输出值。 校正用途输出值越大，空/燃比传感器的响应性越高。 确定装置通过校正预校正指数量来获取空/燃比不平衡指数值，使得校正指数量越小校正用输出值越大。 当空/燃比不平衡指数值大于或等于不平衡确定阈值时，确定发生了缸间空气/燃料比不平衡状态。

公开(公告)号：US20120024274A1

公开(公告)日：2012-02-02

申请号：US13194915

申请日：2011-07-30

申请人： Masashi Hakariya ,  Masahide Okada

发明人： Masashi Hakariya ,  Masahide Okada

IPC分类号： F02D41/00

CPC分类号： F02D41/0085 ,  F02D41/123 ,  F02D41/1441 ,  F02D41/1446 ,  F02D41/1456 ,  F02D41/2454 ,  F02D2041/1432

摘要： The invention provides an inter-cylinder air/fuel ratio imbalance determination apparatus and method. The determination apparatus includes a “limiting current type air/fuel ratio sensor”, and acquires a pre-correction index quantity that is greater the greater the degree of non-uniformity of the cylinder-by-cylinder air/fuel ratios, on the basis of a time differential value of the output value of the air/fuel ratio sensor. The determination apparatus obtains as the correction-purpose output value an average value of the output value obtained during a fuel-cut operation. The correction-purpose output value is greater the higher the responsiveness of the air/fuel ratio sensor. The determination apparatus acquires an air/fuel ratio imbalance index value by correcting the pre-correction index quantity so that the pre-correction index quantity is smaller the greater the correction-purpose output value. It is determined that an inter-cylinder air/fuel ratio imbalance state has occurred, when the air/fuel ratio imbalance index value is greater than or equal to an imbalance determination threshold value.

摘要翻译： 本发明提供一种气缸内空气/燃料比不平衡确定装置和方法。 确定装置包括“极限电流型空气/燃料比传感器”，并且基于每个缸缸空气/燃料比的不均匀度越大获得预校正指数量越大 的空气/燃料比传感器的输出值的时间微分值。 确定装置获得在燃料切断操作期间获得的输出值的平均值作为校正用输出值。 校正用途输出值越大，空/燃比传感器的响应性越高。 确定装置通过校正预校正指数量来获取空/燃比不平衡指数值，使得校正指数量越小校正用输出值越大。 当空/燃比不平衡指数值大于或等于不平衡确定阈值时，确定发生了缸间空气/燃料比不平衡状态。

公开(公告)号：US09341544B2

公开(公告)日：2016-05-17

申请号：US14216004

申请日：2014-03-17

申请人： Isao Nakajima ,  Yoshifumi Matsuda ,  Yoshihisa Oda ,  Masashi Hakariya ,  Masahide Okada ,  Hiroaki Tsuji ,  Tokiji Ito ,  Tatsuro Shimada ,  Toshihiro Kato ,  Yuya Yoshikawa

发明人： Isao Nakajima ,  Yoshifumi Matsuda ,  Yoshihisa Oda ,  Masashi Hakariya ,  Masahide Okada ,  Hiroaki Tsuji ,  Tokiji Ito ,  Tatsuro Shimada ,  Toshihiro Kato ,  Yuya Yoshikawa

IPC分类号： G01M15/10 ,  F01N11/00 ,  G01N1/22 ,  F02D41/22 ,  F02D41/14 ,  F02D41/18

CPC分类号： G01M15/102 ,  F01N11/00 ,  F01N11/007 ,  F02D41/1454 ,  F02D41/1495 ,  F02D41/18 ,  F02D41/22 ,  F02D41/222 ,  G01M15/10 ,  G01M15/104 ,  G01N1/2252 ,  Y02T10/42 ,  Y02T10/44 ,  Y02T10/47

摘要： An abnormality detecting device of an internal combustion engine according to the present invention includes a sensor nick abnormality detecting unit configured to detect a nick abnormality in a detecting element of a downstream side sensor which is provided in a downstream side of an exhaust gas purifying catalyst in an exhaust passage and generates an output corresponding to an oxygen concentration in exhaust gas, on the basis of a matter that a distribution of an output of the downstream side sensor is biased to an area in which the air-fuel ratio is leaner than a theoretical air-fuel ratio, and an inhibiting unit configured to inhibit detection of the nick abnormality of the detecting element by the sensor nick abnormality detecting unit in the case that an intake air amount exceeds a predetermined amount.

摘要翻译： 根据本发明的内燃机的异常检测装置包括传感器切痕异常检测单元，其被配置为检测设置在排气净化催化剂的下游侧的下游侧传感器的检测元件中的切口异常 排气通道，并且基于下游侧传感器的输出的分布被偏置到空燃比比理论上更稀的区域的事物，生成对应于排气中的氧浓度的输出 以及抑制单元，其被配置为在进气量超过预定量的情况下禁止由传感器切痕异常检测单元检测到检测元件的切痕异常。

公开(公告)号：US09097193B2

公开(公告)日：2015-08-04

申请号：US14044400

申请日：2013-10-02

申请人： Yoshihisa Oda ,  Isao Nakajima ,  Masashi Hakariya ,  Akihiro Katayama ,  Kazuhiro Akisada ,  Sei Maruta ,  Leuth Insixiengmai ,  Shinichi Nakagoshi ,  Masahide Okada

发明人： Yoshihisa Oda ,  Isao Nakajima ,  Masashi Hakariya ,  Akihiro Katayama ,  Kazuhiro Akisada ,  Sei Maruta ,  Leuth Insixiengmai ,  Shinichi Nakagoshi ,  Masahide Okada

IPC分类号： B60T7/12 ,  F02D41/14 ,  F02D41/00

CPC分类号： F02D41/1454 ,  F02D41/0082 ,  F02D41/0085 ,  F02D41/1441 ,  F02D41/1497

摘要： An inter-cylinder air-fuel ratio variation abnormality detection apparatus is disclosed. The apparatus determines imbalance of an air-fuel ratio among the cylinders based on a difference between index values correlated with crank angular velocities detected in a set of opposite cylinders belonging to different banks and having crank angles different from one another by 360°; and carries out an air-fuel ratio feedback process for controlling an amount of injected fuel for each of the banks, wherein the apparatus comprises a correction unit correcting, before determining the air-fuel ratio imbalance, the difference between the index values in a direction of combustion improvement for opposite cylinders that are opposite to cylinders belonging to a bank identical to a bank of a cylinder with the most deviating index value from a standard value among all the cylinders and being other than the cylinder with the most deviating index value.

摘要翻译： 公开了一种缸内空燃比变化异常检测装置。 该装置基于与属于不同组的一组相对的气缸中检测到的具有彼此不同的曲柄角360°的曲柄角速度相关的指标值之间的差异，确定气缸之间的空燃比的不平衡; 并且执行用于控制每个组的喷射量的空燃比反馈处理，其中，所述装置包括校正单元，在确定所述空燃比不平衡之前，校正所述指标值之间的方向 对于与属于与所有气缸中的标准值具有最偏离的指标值的气缸组相同的气缸相对的气缸的相反气缸的燃烧改进，并且是具有最偏离的指标值的气缸以外的燃烧改进。

公开(公告)号：US20140095053A1

公开(公告)日：2014-04-03

申请号：US14044400

申请日：2013-10-02

申请人： Yoshihisa Oda ,  Isao Nakajima ,  Masashi Hakariya ,  Akihiro Katayama ,  Kazuhiro Akisada ,  Sei Maruta ,  Leuth Insixiengmai ,  Shinichi Nakagoshi ,  Masahide Okada

发明人： Yoshihisa Oda ,  Isao Nakajima ,  Masashi Hakariya ,  Akihiro Katayama ,  Kazuhiro Akisada ,  Sei Maruta ,  Leuth Insixiengmai ,  Shinichi Nakagoshi ,  Masahide Okada

IPC分类号： F02D41/14

CPC分类号： F02D41/1454 ,  F02D41/0082 ,  F02D41/0085 ,  F02D41/1441 ,  F02D41/1497

摘要： An inter-cylinder air-fuel ratio variation abnormality detection apparatus is disclosed. The apparatus determines imbalance of an air-fuel ratio among the cylinders based on a difference between index values correlated with crank angular velocities detected in a set of opposite cylinders belonging to different banks and having crank angles different from one another by 360°; and carries out an air-fuel ratio feedback process for controlling an amount of injected fuel for each of the banks, wherein the apparatus comprises a correction unit correcting, before determining the air-fuel ratio imbalance, the difference between the index values in a direction of combustion improvement for opposite cylinders that are opposite to cylinders belonging to a bank identical to a bank of a cylinder with the most deviating index value from a standard value among all the cylinders and being other than the cylinder with the most deviating index value.

摘要翻译： 公开了一种缸内空燃比变化异常检测装置。 该装置基于与属于不同组的一组相对的气缸中检测到的具有彼此不同的曲柄角360°的曲柄角速度相关的指标值之间的差异，确定气缸之间的空燃比的不平衡; 并且执行用于控制每个组的喷射量的空燃比反馈处理，其中，所述装置包括校正单元，在确定所述空燃比不平衡之前，校正所述指标值之间的方向 对于与属于与所有气缸中的标准值具有最偏离的指标值的气缸组相同的气缸相对的气缸的相反气缸的燃烧改进，并且是具有最偏离的指标值的气缸以外的燃烧改进。

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。