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公开(公告)号：EP1571444A2
公开(公告)日：2005-09-07
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
摘要： A gas detecting system comprises: a sensor element including: an oxygen pump cell comprising a first oxygen ion conducting solid electrolyte layer between a first pair of electrodes; an oxygen concentration measuring cell comprising a second oxygen ion conducting solid electrolyte layer between a second pair of electrodes; and a measurement chamber between the oxygen pump cell and the oxygen concentration measurement cell; a plurality of lead wires connected with the first and second pairs of electrodes; and a control unit electrically connected with the electrodes through the lead wires, wherein the lead wires includes a common lead wire connected with electrodes confronting the measurement chamber of the first and second pairs of electrodes, and wherein the common lead wire has a portion to contact in an electrically insulated state with at least one of the lead wires other than the common lead wire.
摘要翻译： 气体检测系统包括：传感器元件，包括：氧泵单元，包括在第一对电极之间的第一氧离子传导固体电解质层; 氧浓度测量池，包括在第二对电极之间的第二氧离子导电固体电解质层; 以及氧泵电池和氧浓度测量电池之间的测量室; 与第一和第二对电极连接的多个引线; 以及控制单元，其通过所述引线与所述电极电连接，其中所述引线包括与所述第一对和第二对电极的所述测量室对置的电极连接的公共引线，并且其中所述公共引线具有接触部分 处于电绝缘状态，其中除了公共引线之外的至少一个引线。
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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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3.发明授权
公开(公告)号：EP1677103B1
公开(公告)日：2013-05-15
申请号：EP05028591.5
申请日：2005-12-28
IPC分类号： G01N27/417
CPC分类号： G01N27/4175 , F02D41/1456 , F02D41/1494 , F02D41/1495 , F02D2041/1409
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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：EP1961941B1
公开(公告)日：2018-08-29
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：EP1961942A3
公开(公告)日：2013-12-04
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：EP1571444A3
公开(公告)日：2010-01-20
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
摘要： A gas detecting system comprises: a sensor element including: an oxygen pump cell comprising a first oxygen ion conducting solid electrolyte layer between a first pair of electrodes; an oxygen concentration measuring cell comprising a second oxygen ion conducting solid electrolyte layer between a second pair of electrodes; and a measurement chamber between the oxygen pump cell and the oxygen concentration measurement cell; a plurality of lead wires connected with the first and second pairs of electrodes; and a control unit electrically connected with the electrodes through the lead wires, wherein the lead wires includes a common lead wire connected with electrodes confronting the measurement chamber of the first and second pairs of electrodes, and wherein the common lead wire has a portion to contact in an electrically insulated state with at least one of the lead wires other than the common lead wire.
摘要翻译： 气体检测系统包括：传感器元件，其包括：氧泵单元，其包括在第一对电极之间的第一氧离子传导固体电解质层; 氧浓度测量单元，其包括在第二对电极之间的第二氧离子传导固体电解质层; 以及氧泵单元和氧浓度测量单元之间的测量室; 与第一和第二对电极连接的多根引线; 以及通过引线与电极电连接的控制单元，其中引线包括与面对第一和第二对电极的测量室的电极连接的公共引线，并且其中公共引线具有接触部分 在除了公共引线之外的至少一条引线处于电绝缘状态。
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公开(公告)号：EP1961940A2
公开(公告)日：2008-08-27
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
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.
摘要翻译： 气体传感器诊断方法（或设备）被布置为周期性地获得用于内燃机的气体传感器（例如氧气传感器）的传感器输出值，并且根据在中断期间获得的传感器输出值来确定局部极值 燃料供应给发动机。 此外，将局部极值与第一预定阈值进行比较。 当局部极值的数量达到预定的第一数量时，根据局部极值与第一阈值水平的比较结果，执行诊断以确定气体传感器是否处于不适当的状态。
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9.发明公开
公开(公告)号：EP1677103A3
公开(公告)日：2007-06-20
申请号：EP05028591.5
申请日：2005-12-28
IPC分类号： G01N27/417
CPC分类号： G01N27/4175 , F02D41/1456 , F02D41/1494 , F02D41/1495 , F02D2041/1409
摘要： In an activation state of a sensor device (10), when voltage on the connection points between the sensor device (10) and the sensor control circuit (50) becomes a preset abnormal value, electric cut off is made between the sensor control circuit and the connection point. Then, the delivery of power to the heater (70) is ceased to lower the temperature of the cells to a below of an activation temperature, thereby increasing the internal resistance of the cell. Thereafter, the sensor control circuit (50) supplies to the sensor device a current in a degree not to damage the sensor device (10), to detect voltages on the connection points at that time. By comparing between the voltages on the respective connection points detected, a content and location of abnormality occurred is identified for the sensor device.
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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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