公开(公告)号：US20140290219A1

公开(公告)日：2014-10-02

申请号：US14204507

申请日：2014-03-11

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

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

IPC: F02D41/14

CPC classification number: F02D41/1441 ,  F02D41/1443 ,  F02D41/1486 ,  F02D41/221 ,  F02D41/3094

Abstract: 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.

Abstract translation: 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：US08640532B2

公开(公告)日：2014-02-04

申请号：US13673403

申请日：2012-11-09

Applicant: Yuya Yoshikawa

Inventor： Yuya Yoshikawa

IPC: G01M15/10

CPC classification number: G01M15/10 ,  F02D41/0085 ,  F02D41/1441 ,  F02D41/1455 ,  F02D41/18

Abstract: An apparatus and method for detecting an abnormal air-fuel ratio variation between cylinders of a multi-cylinder internal combustion engine in which the output of an air-fuel ratio sensor is acquired at each sampling interval, a parameter correlated with the degree of fluctuation of the sensor output is calculated from a plurality of the acquired sensor outputs, and the presence or absence of the abnormal air-fuel ratio variation between cylinders is determined by comparing the parameter with a determination value. A cylinder air amount is estimated at each sampling interval. Every time the air-fuel ratio sensor output is acquired, the value of the cylinder air amount at the point earlier, by a transport delay time, than the point of the acquisition is determined based on the time-series data, and a corresponding determination value corresponding thereto is calculated. The determination value is determined based on a plurality of the calculated corresponding determination values.

Abstract translation: 一种用于检测在每个采样间隔获取空燃比传感器的输出的多气缸内燃机的气缸之间的异常空燃比变化的装置和方法，与每个采样间隔相关的参数， 从多个获取的传感器输出计算传感器输出，并且通过将参数与确定值进行比较来确定气缸之间异常空燃比变化的有无。 在每个采样间隔估计气缸空气量。 每当获取空燃比传感器输出时，基于时间序列数据确定比提取点更早的运送延迟时间点处的气缸空气量的值，以及相应的确定 计算与其对应的值。 基于多个计算出的相应的确定值来确定确定值。

公开(公告)号：US20120209497A1

公开(公告)日：2012-08-16

申请号：US13397279

申请日：2012-02-15

Applicant: Yuya Yoshikawa

Inventor： Yuya Yoshikawa

IPC: F02D28/00

CPC classification number: F02D41/0085 ,  F01N3/101 ,  F01N13/0093 ,  F02D41/1441 ,  F02D41/1454 ,  F02D41/1498 ,  Y02T10/22

Abstract: An inter-cylinder air-fuel ratio imbalance abnormality determination device includes a catalyst provided in an exhaust passage of a multi-cylinder internal combustion engine; a pre-catalyst sensor; a post-catalyst sensor; an air-fuel ratio control unit that performs main air-fuel ratio control based on an output of the pre-catalyst sensor and auxiliary air-fuel ratio control based on an output of the post-catalyst sensor; a control amount calculation unit that calculates a control amount in the auxiliary air-fuel ratio control based on the output of the post-catalyst sensor; a revolution speed variation detection unit that detects a revolution speed variation of the engine; an abnormality determination unit that performs imbalance abnormality determination for determining whether an inter-cylinder air-fuel ratio imbalance abnormality has occurred based on a detected value of the revolution speed variation; and a guard range reduction unit that reduces a guard range of the control amount during the imbalance abnormality determination.

Abstract translation: 气缸内空燃比不平衡异常判定装置具备设置在多气缸内燃机的排气通路内的催化剂， 预催化剂传感器; 催化后传感器; 空燃比控制单元，其基于所述催化剂后传感器的输出，基于所述催化剂前传感器的输出和辅助空燃比控制进行主空燃比控制; 控制量计算单元，其基于所述后催化剂传感器的输出来计算所述辅助空燃比控制中的控制量; 一个检测发动机的转速变化的转速变化检测单元; 异常判定单元，其基于所述转速变化的检测值，进行用于判定是否发生了缸间空燃比不平衡异常的不平衡异常判定; 以及减小在不平衡异常判定期间的控制量的保护范围的防护范围减小部。

公开(公告)号：US08240195B2

公开(公告)日：2012-08-14

申请号：US12757690

申请日：2010-04-09

Applicant: Takeo Ogiso ,  Hiroaki Tsuji ,  Keiko Okamoto ,  Yuya Yoshikawa

Inventor： Takeo Ogiso ,  Hiroaki Tsuji ,  Keiko Okamoto ,  Yuya Yoshikawa

IPC: G01M15/04

CPC classification number: F02D41/1495 ,  F02D41/1456

Abstract: An apparatus includes: an control portion that controls fluctuating the air/fuel ratio; a data acquisition portion that acquires a responsiveness parameter during change of output of the sensor between a rich peak to a lean peak; and a determination portion that determines presence/absence of abnormality of the sensor based on an abnormality criterion value and a data average. When the number of the acquired data becomes equal to or greater than a first number, if the number of the acquired data during a large intake-air-amount of an engine is greater than or equal to a second number, the determination portion determines the presence/absence of abnormality, or if the number of the acquired data during the large intake-air-amount is less than the second number, the determination portion does not determines that, but acquires the data until the number of the acquired data during the large intake-air-amount reaches the second number.

Abstract translation: 一种装置，包括：控制部，其控制空燃比的波动; 数据获取部，其在丰富的峰值与稀疏峰值之间的传感器的输出变化期间取得响应性参数; 以及确定部，其基于异常判据值和数据平均值来判定传感器的异常的存在/不存在。 当获取的数据的数量变得等于或大于第一数量时，如果在发动机的大的进气量期间获取的数据的数量大于或等于第二数量，则确定部分确定 无论是否存在异常，或者如果在大的进气量期间获取的数据的数量小于第二个数量，则确定部分不确定但是获取数据，直到获取的数据的数量在 大量进气量达到第二个数量。

公开(公告)号：US20100318282A1

公开(公告)日：2010-12-16

申请号：US12757690

申请日：2010-04-09

Applicant: Takeo OGISO ,  Hiroaki Tsuji ,  Keiko Okamoto ,  Yuya Yoshikawa

Inventor： Takeo OGISO ,  Hiroaki Tsuji ,  Keiko Okamoto ,  Yuya Yoshikawa

IPC: F02D41/04

CPC classification number: F02D41/1495 ,  F02D41/1456

Abstract: An apparatus includes: an control portion that controls fluctuating the air/fuel ratio; a data acquisition portion that acquires a responsiveness parameter during change of output of the sensor between a rich peak to a lean peak; and a determination portion that determines presence/absence of abnormality of the sensor based on an abnormality criterion value and a data average. When the number of the acquired data becomes equal to or greater than a first number, if the number of the acquired data during a large intake-air-amount of an engine is greater than or equal to a second number, the determination portion determines the presence/absence of abnormality, or if the number of the acquired data during the large intake-air-amount is less than the second number, the determination portion does not determines that, but acquires the data until the number of the acquired data during the large intake-air-amount reaches the second number.

Abstract translation: 一种装置，包括：控制部，其控制空燃比的波动; 数据获取部，其在丰富的峰值与稀疏峰值之间的传感器的输出变化期间取得响应性参数; 以及确定部，其基于异常判据值和数据平均值来判定传感器的异常的存在/不存在。 当获取的数据的数量变得等于或大于第一数量时，如果在发动机的大的进气量期间获取的数据的数量大于或等于第二数量，则确定部分确定 无论是否存在异常，或者如果在大的进气量期间获取的数据的数量小于第二个数量，则确定部分不确定但是获取数据，直到获取的数据的数量在 大量进气量达到第二个数量。