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：US20140223987A1

公开(公告)日：2014-08-14

申请号：US14166024

申请日：2014-01-28

申请人： Tatsuro Shimada ,  Isao Nakajima ,  Toshihiro Kato ,  Leuth Insixiengmai ,  Yoshihisa Oda ,  Masashi Hakariya

发明人： Tatsuro Shimada ,  Isao Nakajima ,  Toshihiro Kato ,  Leuth Insixiengmai ,  Yoshihisa Oda ,  Masashi Hakariya

IPC分类号： G01N33/00

CPC分类号： F02D41/1454 ,  F02D41/0085 ,  F02D41/1443

摘要： Provided is an apparatus for detecting cylinder air-fuel ratio imbalance abnormality. The apparatus is provided with an abnormality detecting unit that detects a cylinder air-fuel ratio imbalance abnormality by comparing a value of a parameter correlated with a degree of fluctuation in the air-fuel ratio sensor output to an abnormality threshold value, and a correcting unit that corrects at least one of the value of the parameter or the abnormality threshold value on the basis of atmospheric pressure. An amount of correction performed by the correcting unit is modified according to engine load.

摘要翻译： 提供一种用于检测气缸空燃比不平衡异常的装置。 该装置设置有异常检测单元，其通过将与空燃比传感器输出的波动程度相关的参数的值与异常阈值进行比较来检测气缸空燃比不平衡异常，以及校正单元 其基于大气压力校正参数的值或异常阈值中的至少一个。 由校正单元执行的校正量根据发动机负荷进行修改。

公开(公告)号：US08620564B2

公开(公告)日：2013-12-31

申请号：US13480921

申请日：2012-05-25

申请人： Masashi Hakariya ,  Isao Nakajima ,  Yoshihisa Oda ,  Hitoshi Tanaka ,  Kiyotaka Kushihama ,  Shota Kitano ,  Kazuyuki Noda ,  Katsumi Adachi ,  Yuichi Kohara ,  Akihiro Katayama

发明人： Masashi Hakariya ,  Isao Nakajima ,  Yoshihisa Oda ,  Hitoshi Tanaka ,  Kiyotaka Kushihama ,  Shota Kitano ,  Kazuyuki Noda ,  Katsumi Adachi ,  Yuichi Kohara ,  Akihiro Katayama

IPC分类号： B60T7/12 ,  G05D1/00 ,  G06F7/00 ,  G06F17/00

CPC分类号： F02D41/1498 ,  F02D41/0085 ,  F02D41/1495 ,  F02D41/22 ,  F02D41/3076

摘要： An abnormality detection apparatus for a multi-cylinder internal combustion engine changes a fuel injection quantity of a predetermined target cylinder to detect an abnormality of an internal combustion engine based on values of rotational variations relating to the target cylinder detected before and after the change of the fuel injection quantity. The abnormality detection apparatus corrects the values of the rotational variations relating to the target cylinder detected before and after the change of the fuel injection quantity based on at least one of the number of revolutions of the engine and an engine load at a corresponding detection time.

摘要翻译： 用于多气缸内燃机的异常检测装置根据与在目标气缸的变化之前和之后检测到的目标气缸相关的旋转变化的值来改变预定目标气缸的燃料喷射量以检测内燃机的异常 燃油喷射量。 异常检测装置在相应的检测时间的基础上，基于发动机的转数和发动机负荷中的至少一方来校正与燃料喷射量的变化前后检测到的目标气缸的旋转变动的值。

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：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：US08892337B2

公开(公告)日：2014-11-18

申请号：US13386260

申请日：2011-03-28

申请人： Shota Kitano ,  Hitoshi Tanaka ,  Isao Nakajima ,  Yoshihisa Oda ,  Masashi Hakariya ,  Kiyotaka Kushihama ,  Kazuyuki Noda ,  Akihiro Katayama ,  Yuichi Kohara ,  Katsumi Adachi

发明人： Shota Kitano ,  Hitoshi Tanaka ,  Isao Nakajima ,  Yoshihisa Oda ,  Masashi Hakariya ,  Kiyotaka Kushihama ,  Kazuyuki Noda ,  Akihiro Katayama ,  Yuichi Kohara ,  Katsumi Adachi

IPC分类号： F02D41/22 ,  F02D41/30 ,  F02D41/14 ,  F02D41/12 ,  F02D41/00

CPC分类号： F02D41/0085 ,  F02D41/126 ,  F02D41/1441 ,  F02D41/1443 ,  F02D41/1456 ,  F02D41/1498 ,  F02D2200/0816 ,  F02D2200/1012

摘要： An apparatus for detecting imbalance abnormality in an air-fuel ratio between cylinders in a multi-cylinder internal combustion engine according to the present invention increases a fuel injection quantity to a predetermined target cylinder to detect imbalance abnormality in an air-fuel ratio between cylinders at least based upon a rotation variation of the target cylinder after increasing the fuel injection quantity. The increase in the fuel injection quantity is carried out in the middle of performing the post-fuel-cut rich control. Since timing of the post-fuel cut rich control is used to increase the fuel injection quantity, the exhaust emission deterioration due to abnormality detection execution can be prevented as much as possible.

摘要翻译： 根据本发明的用于检测多缸内燃机中的气缸之间的空燃比的不平衡异常的装置将预定目标气缸的燃料喷射量增加以检测气缸之间的空燃比的不平衡异常 至少基于在增加燃料喷射量之后目标气缸的旋转变化。 燃料喷射量的增加在执行后燃料切断浓缩控制的中间进行。 由于使用后燃料切断浓缩控制的定时来增加燃料喷射量，所以可以尽可能地防止由异常检测执行引起的废气劣化。