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公开(公告)号：EP2045457B1
公开(公告)日：2018-04-11
申请号：EP08016717.4
申请日：2008-09-23
发明人： Fukagai, Reina , Ieda, Norikazu , Tanaka, Masahiro , Inagaki, Hiroshi , Hirata, Masaki , Suzuki, Takahiro
CPC分类号： F02D41/1474 , F02D41/1456 , F02D41/1494 , F02D41/1495 , F02D2041/1432 , G01N27/4175
摘要： A gas sensor diagnostic method includes the steps of counting the reversal number of times that a target air-fuel ratio for an air-fuel mixture to be supplied to an internal combustion engine reverses from a rich side to a lean side or from the lean side to the rich side through a specific air-fuel ratio defined as a boundary of the rich and lean sides; obtaining a detection signal of gas sensor at constant time intervals during a diagnosis period between a timing when the count for the reversal number is started and a timing when the reversal number reaches a predetermined number; calculating a first moderated signal by applying a first moderation calculation to the detection signal, and a second moderated signal by applying a second moderation calculation to the detection signal; calculating a deviation between the first and second moderated signals; and determining whether the gas sensor is in the abnormal state on the basis of the deviation obtained during the diagnosis period.
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公开(公告)号：EP1571444B1
公开(公告)日：2011-10-26
申请号：EP05001711.0
申请日：2005-01-27
IPC分类号： G01N27/407
CPC分类号： G01N27/4062 , G01N27/407
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公开(公告)号：EP1961942B1
公开(公告)日：2018-10-24
申请号：EP08002866.5
申请日：2008-02-15
发明人： Fukagai, Reina , Ieda, Norikazu , Tanaka, Masahiro , Inagaki, Hiroshi , Takamatsu, Kunihiko , Hirata, Masaki , Suzuki, Takahiro
IPC分类号： F02D41/22 , F02D41/14 , G01N27/417 , F02D41/12
CPC分类号： F02D41/1456 , F02D41/123 , F02D41/126 , F02D41/1495 , F02D2250/14 , G01N27/4175
摘要： A gas sensor diagnostic method includes: a fuel supply detecting step of detecting an interruption of a fuel supply to the internal combustion engine, and a restart of the fuel supply after the interruption of the fuel supply; a response time period accumulating step of determining a response time period by accumulating a first time period that the sensor output value reaches from a first threshold value to a second threshold value after the detection of the interruption of the fuel supply, and a second time period that the sensor output value reaches from a third threshold value to a fourth threshold value after the detection of the restart of the fuel supply after the interruption of the fuel supply; and an abnormal state diagnosing section of determining an abnormal state of the gas sensor when the response time period is greater than a predetermined time period.
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公开(公告)号：EP2045457A3
公开(公告)日：2011-10-12
申请号：EP08016717.4
申请日：2008-09-23
发明人： Fukagai, Reina , Ieda, Norikazu , Tanaka, Masahiro , Inagaki, Hiroshi , Hirata, Masaki , Suzuki, Takahiro
CPC分类号： F02D41/1474 , F02D41/1456 , F02D41/1494 , F02D41/1495 , F02D2041/1432 , G01N27/4175
摘要： A gas sensor diagnostic method includes the steps of counting the reversal number of times that a target air-fuel ratio for an air-fuel mixture to be supplied to an internal combustion engine reverses from a rich side to a lean side or from the lean side to the rich side through a specific air-fuel ratio defined as a boundary of the rich and lean sides; obtaining a detection signal of gas sensor at constant time intervals during a diagnosis period between a timing when the count for the reversal number is started and a timing when the reversal number reaches a predetermined number; calculating a first moderated signal by applying a first moderation calculation to the detection signal, and a second moderated signal by applying a second moderation calculation to the detection signal; calculating a deviation between the first and second moderated signals; and determining whether the gas sensor is in the abnormal state on the basis of the deviation obtained during the diagnosis period.
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公开(公告)号：EP1961941A3
公开(公告)日：2011-10-12
申请号：EP08002666.9
申请日：2008-02-13
发明人： Fukagai, Reina , Ieda, Norikazu , Tanaka, Masahiro , Inagaki, Hiroshi , Hirata, Masaki , Suzuki, Takahiro
CPC分类号： F02D41/1495 , F02D41/1456 , F02D41/1474 , F02D41/1494 , F02D2041/1432
摘要： A gas sensor diagnostic method includes the steps of counting the reversal number of times that a target air-fuel ratio for an air-fuel mixture to be supplied to an internal combustion engine reverses from a rich side to a lean side or from the lean side to the rich side through a specific air-fuel ratio defined as a boundary of the rich and lean sides; obtaining a detection signal of a gas sensor at constant time intervals during a diagnosis period between a timing when the count for the reversal number is started and a timing when the reversal number reaches a predetermined number; calculating a moderated signal by applying a moderation calculation using a predetermined moderation coefficient to the obtained detection signal; calculating a deviation between the obtained detection signal and the calculated moderated signal; and determining whether the gas sensor is in an abnormal state or not on the basis of the deviation.
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公开(公告)号：EP2045457A2
公开(公告)日：2009-04-08
申请号：EP08016717.4
申请日：2008-09-23
发明人： Fukagai, Reina , Ieda, Norikazu , Tanaka, Masahiro , Inagaki, Hiroshi , Hirata, Masaki , Suzuki, Takahiro
CPC分类号： F02D41/1474 , F02D41/1456 , F02D41/1494 , F02D41/1495 , F02D2041/1432 , G01N27/4175
摘要： A gas sensor diagnostic method includes the steps of counting the reversal number of times that a target air-fuel ratio for an air-fuel mixture to be supplied to an internal combustion engine reverses from a rich side to a lean side or from the lean side to the rich side through a specific air-fuel ratio defined as a boundary of the rich and lean sides; obtaining a detection signal of gas sensor at constant time intervals during a diagnosis period between a timing when the count for the reversal number is started and a timing when the reversal number reaches a predetermined number; calculating a first moderated signal by applying a first moderation calculation to the detection signal, and a second moderated signal by applying a second moderation calculation to the detection signal; calculating a deviation between the first and second moderated signals; and determining whether the gas sensor is in the abnormal state on the basis of the deviation obtained during the diagnosis period.
摘要翻译： 气体传感器诊断方法包括以下步骤：计算供给内燃机的空气燃料混合物的目标空燃比从富侧向倾斜侧或从稀侧反转的次数 通过定义为富边和贫边的边界的特定空燃比向富人提供; 在开始反转次数的定时与反转次数达到规定次数的定时之间的诊断期间，以恒定的时间间隔获取气体传感器的检测信号; 通过对所述检测信号应用第一审核计算来计算第一调节信号，以及通过对所述检测信号应用第二审核计算来计算第二调节信号; 计算第一和第二调节信号之间的偏差; 并且基于在诊断期间获得的偏差来确定气体传感器是否处于异常状态。
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公开(公告)号：EP1961940B1
公开(公告)日：2019-04-03
申请号：EP08002663.6
申请日：2008-02-13
发明人： Fukagai, Reina , Ieda, Norikazu , Tanaka, Masahiro , Inagaki, Hiroshi , Hirata, Masaki , Suzuki, Takahiro
IPC分类号： F02D41/14 , F02D41/12 , G01N27/417
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公开(公告)号：EP1961940A3
公开(公告)日：2017-07-19
申请号：EP08002663.6
申请日：2008-02-13
发明人： Fukagai, Reina , Ieda, Norikazu , Tanaka, Masahiro , Inagaki, Hiroshi , Hirata, Masaki , Suzuki, Takahiro
IPC分类号： F02D41/14 , F02D41/12 , G01N27/417
CPC分类号： F02D41/1454 , F02D41/123 , F02D41/1495 , G01N27/4175
摘要： A gas sensor diagnostic method (or apparatus) is arranged to periodically obtain sensor output values of a gas sensor such as an oxygen sensor for an internal combustion engine, and to determine local extreme values from the sensor output values obtained during a period of interruption of fuel supply to the engine. Moreover, the local extreme values are compared with a first predetermined threshold level. When the number of the local extreme values reaches a predetermined first number, a diagnosis is performed to determine whether the gas sensor is in an improper condition or not, in accordance with results of the comparison of the local extreme values with the first threshold level.
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9.发明公开
公开(公告)号：EP1961942A2
公开(公告)日：2008-08-27
申请号：EP08002866.5
申请日：2008-02-15
发明人： Fukagai, Reina , Ieda, Norikazu , Tanaka, Masahiro , Inagaki, Hiroshi , Takamatsu, Kunihiko , Hirata, Masaki , Suzuki, Takahiro
CPC分类号： F02D41/1456 , F02D41/123 , F02D41/126 , F02D41/1495 , F02D2250/14 , G01N27/4175
摘要： A gas sensor diagnostic method includes: a fuel supply detecting step of detecting an interruption of a fuel supply to the internal combustion engine, and a restart of the fuel supply after the interruption of the fuel supply; a response time period accumulating step of determining a response time period by accumulating a first time period that the sensor output value reaches from a first threshold value to a second threshold value after the detection of the interruption of the fuel supply, and a second time period that the sensor output value reaches from a third threshold value to a fourth threshold value after the detection of the restart of the fuel supply after the interruption of the fuel supply; and an abnormal state diagnosing section of determining an abnormal state of the gas sensor when the response time period is greater than a predetermined time period.
摘要翻译： 气体传感器诊断方法包括：燃料供给检测步骤，检测对内燃机的燃料供给的中断，以及在燃料供给中断之后重新启动燃料供给; 响应时间累积步骤，通过在检测到燃料供应中断之后累积传感器输出值从第一阈值到达第二阈值的第一时间段来确定响应时间段，以及第二时间段 在燃料供给中断之后检测到燃料供应的重新启动之后，传感器输出值从第三阈值到达第四阈值; 以及异常状态诊断部，其在所述响应时间段大于预定时间段时确定所述气体传感器的异常状态。
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10.发明公开Diagnostic method and apparatus for an exhaust gas sensor 审中-公开Diagnoseverfahren und Vorrichtungfüreine Abgassonde
公开(公告)号：EP1961941A2
公开(公告)日：2008-08-27
申请号：EP08002666.9
申请日：2008-02-13
发明人： Fukagai, Reina , Ieda, Norikazu , Tanaka, Masahiro , Inagaki, Hiroshi , Hirata, Masaki , Suzuki, Takahiro
CPC分类号： F02D41/1495 , F02D41/1456 , F02D41/1474 , F02D41/1494 , F02D2041/1432
摘要： A gas sensor diagnostic method includes the steps of counting the reversal number of times that a target air-fuel ratio for an air-fuel mixture to be supplied to an internal combustion engine reverses from a rich side to a lean side or from the lean side to the rich side through a specific air-fuel ratio defined as a boundary of the rich and lean sides; obtaining a detection signal of a gas sensor at constant time intervals during a diagnosis period between a timing when the count for the reversal number is started and a timing when the reversal number reaches a predetermined number; calculating a moderated signal by applying a moderation calculation using a predetermined moderation coefficient to the obtained detection signal; calculating a deviation between the obtained detection signal and the calculated moderated signal; and determining whether the gas sensor is in an abnormal state or not on the basis of the deviation.
摘要翻译： 气体传感器诊断方法包括以下步骤：计算供给内燃机的空气燃料混合物的目标空燃比从富侧向倾斜侧或从稀侧反转的次数 通过定义为富边和贫边的边界的特定空燃比向富人提供; 在开始反转次数的定时与反转次数达到规定数的定时之间的诊断期间，以恒定的时间间隔获取气体传感器的检测信号; 通过对所获得的检测信号应用使用预定调节系数的审核计算来计算调节信号; 计算所获得的检测信号与计算的调节信号之间的偏差; 以及基于偏差确定气体传感器是否处于异常状态。
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