公开(公告)号：US08805609B2

公开(公告)日：2014-08-12

申请号：US13477647

申请日：2012-05-22

申请人： Hitoshi Tanaka ,  Isao Nakajima ,  Toshihiro Kato ,  Takefumi Uchida ,  Yoshihisa Oda

发明人： Hitoshi Tanaka ,  Isao Nakajima ,  Toshihiro Kato ,  Takefumi Uchida ,  Yoshihisa Oda

IPC分类号： F02D41/14 ,  G01M15/00

CPC分类号： G01M15/104

摘要： An apparatus for detecting an abnormal air-fuel ratio variation, includes an abnormality detecting unit that detects an abnormal variation in each of a plurality of fuel injection valves on the basis of an injection ratio between the plurality of fuel injection valves, a fluctuation in the output before the injection ratio is changed and the fluctuation in the output after the injection ratio is changed; and a setting unit that corrects the abnormality determination threshold for each of the plurality of fuel injection valves on the basis of the injection ratio.

摘要翻译： 用于检测异常空燃比变化的装置包括异常检测单元，其基于多个燃料喷射阀之间的喷射比来检测多个燃料喷射阀中的每一个的异常变化， 在喷射比例变化之前的输出和喷射比之后的输出变化; 以及设定单元，其基于喷射率校正所述多个燃料喷射阀中的每一个的异常判定阈值。

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。

公开(公告)号：US20120277979A1

公开(公告)日：2012-11-01

申请号：US13455812

申请日：2012-04-25

申请人： Toshihiro Kato ,  Isao Nakajima ,  Yoshihisa Oda ,  Takefumi Uchida

发明人： Toshihiro Kato ,  Isao Nakajima ,  Yoshihisa Oda ,  Takefumi Uchida

IPC分类号： F02D41/04 ,  G01M15/04 ,  F02D41/30

CPC分类号： F02D41/0085 ,  F02D41/182 ,  F02D41/221 ,  F02D41/3094 ,  F02D2041/224 ,  F02D2200/101

摘要： In an abnormality detection apparatus and an abnormality detection method for a construction in which each of cylinders is provided with a plurality of fuel injection valves, if it is discerned that a cause of the inter-cylinder variation abnormality exists in one of the fuel injection valves, an air/fuel ratio fluctuation parameter as an index value that represents the degree of the abnormality is calculated by normalizing the air/fuel ratio fluctuation parameter regarding that fuel injection valve on the basis of the injection proportion used when the parameter is measured.

摘要翻译： 在各气缸设有多个燃料喷射阀的异常检测装置和异常检测方法中，如果在一个燃料喷射阀中存在缸间变化异常的原因， 通过基于在测定参数时使用的喷射比例，对与该燃料喷射阀对应的空气/燃料比变动参数进行归一化来计算表示异常度的指标值的空燃比变动参数。

公开(公告)号：US09031721B2

公开(公告)日：2015-05-12

申请号：US13650199

申请日：2012-10-12

申请人： Keita Fukui ,  Ryo Kondo ,  Yoshihisa Oda

发明人： Keita Fukui ,  Ryo Kondo ,  Yoshihisa Oda

IPC分类号： G01M3/04 ,  F02M33/02 ,  F02M25/08 ,  B60W20/00

CPC分类号： B60W20/50 ,  B60W10/06 ,  B60W20/00 ,  F02M25/0809 ,  Y10T137/8158

摘要： The leakage diagnosis that carries out a leakage diagnosis on the basis of an internal pressure state of an airtight compartment by emitting gas from the compartment via a canister during a stop of the internal combustion engine includes; detecting a physical quantity that reflects a fuel adsorption state of the canister; and repeating the leakage diagnosis within the number of times of the leakage diagnosis, limited on the basis of the detected physical quantity. The compartment is formed in an evaporative fuel processing mechanism for an internal combustion engine. The evaporative fuel processing mechanism includes a fuel tank.

摘要翻译： 在内燃机停止期间，通过经由罐排出气体，通过气密室的内部压力状态进行泄漏诊断的泄漏诊断包括： 检测反映罐的燃料吸附状态的物理量; 并且在泄漏诊断次数内重复泄漏诊断，基于检测到的物理量而受到限制。 隔间形成在用于内燃机的蒸发燃料处理机构中。 蒸发燃料处理机构包括燃料箱。

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：US20130096757A1

公开(公告)日：2013-04-18

申请号：US13650199

申请日：2012-10-12

申请人： Keita Fukui ,  Ryo Kondo ,  Yoshihisa Oda

发明人： Keita Fukui ,  Ryo Kondo ,  Yoshihisa Oda

IPC分类号： G01M3/04 ,  B60W20/00 ,  B60W10/08 ,  F16K37/00 ,  B60W10/06

CPC分类号： B60W20/50 ,  B60W10/06 ,  B60W20/00 ,  F02M25/0809 ,  Y10T137/8158

摘要： The leakage diagnosis that carries out a leakage diagnosis on the basis of an internal pressure state of an airtight compartment by emitting gas from the compartment via a canister during a stop of the internal combustion engine includes; detecting a physical quantity that reflects a fuel adsorption state of the canister; and repeating the leakage diagnosis within the number of times of the leakage diagnosis, limited on the basis of the detected physical quantity. The compartment is formed in an evaporative fuel processing mechanism for an internal combustion engine. The evaporative fuel processing mechanism includes a fuel tank.

摘要翻译： 在内燃机停止期间，通过经由罐排出气体，通过气密室的内部压力状态进行泄漏诊断的泄漏诊断包括： 检测反映罐的燃料吸附状态的物理量; 并且在泄漏诊断次数内重复泄漏诊断，基于检测到的物理量而受到限制。 隔间形成在用于内燃机的蒸发燃料处理机构中。 蒸发燃料处理机构包括燃料箱。

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：US09726103B2

公开(公告)日：2017-08-08

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： B60T7/12 ,  G05D1/00 ,  F02D41/30 ,  F02D41/00 ,  F02D41/10 ,  F02D41/18 ,  F02D41/14

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 comprises an air-fuel ratio sensor disposed between an exhaust gas merging portion and an upstream catalyst. The control apparatus performs a feedback correction on an amount of fuel to be injected by the fuel injection valve so that an air-fuel ratio represented by the output value of the upstream air-fuel ratio sensor becomes equal to a target air-fuel ratio 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 instructed fuel injection amount in such a manner that an air-fuel ratio determined by the instructed fuel injection amount becomes richer than the stoichiometric air-fuel ratio as the obtained air-fuel ratio imbalance indicating value increases.

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。