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1. 发明授权

EP1961941B1 Diagnostic method and apparatus for an exhaust gas sensor 有权转让
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
申请人： NGK Spark Plug Co., Ltd. , SUZUKI MOTOR CORPORATION
发明人： Fukagai, Reina , Ieda, Norikazu , Tanaka, Masahiro , Inagaki, Hiroshi , Hirata, Masaki , Suzuki, Takahiro
IPC分类号： F02D41/14 , G01N27/41
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.

2. 发明授权

EP2330409B1 Sensor control device and sensor control method 有权转让
公开(公告)号：EP2330409B1
公开(公告)日：2018-06-27
申请号：EP10015238.8
申请日：2010-12-02
申请人： NGK Spark Plug Co., Ltd.
发明人： Kawai, Takeshi , Inagaki, Hiroshi , Shiotani, Koji , Onogi, Hirotaka , Teramoto, Satoshi
IPC分类号： G01N27/407 , G01N27/419 , F02D41/14
CPC分类号： G01N27/419 , F02D41/1454 , F02D41/146 , F02D41/1494 , F02D41/2432 , F02D41/2474 , G01N27/407
摘要： [Objective] An object is to provide a sensor control apparatus and a sensor-control-apparatus control method which can reduce variation in startup time among a plurality of times of execution of detection processing, in consideration of variation in output characteristic among a plurality of gas sensors. [Means for Solution] In a sensor control apparatus, before drive control (S55 to S80) is started, preliminary control is executed so as to supply a constant current to a second oxygen pump cell over a constant time, to thereby control to a constant level the amount of oxygen pumped from a second measurement chamber to the outside of the second measurement chamber (S40 to 50). The preliminary control is executed under control conditions of the sensor control apparatus which are determined for each gas sensor and are associated with the amount of oxygen pumped from the second measurement chamber to the outside thereof. The control conditions bring into a target range the concentration correspondence value calculated after start of the drive control which is started after the preliminary control is executed in a state in which a reference gas having a known concentration is introduced into the gas sensor.

3. 发明公开

EP1961942A3 Diagnostic method and control apparatus for gas sensor 有权转让
标题翻译：用于气体传感器的诊断方法及控制装置
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
申请人： NGK Spark Plug Co., Ltd. , SUZUKI MOTOR CORPORATION
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.

4. 发明授权

EP1890139B1 NOx sensor system with control circuit unit 有权
标题翻译： NOx传感器系统控制电路单元
公开(公告)号：EP1890139B1
公开(公告)日：2012-12-12
申请号：EP07023840.7
申请日：1999-02-19
申请人： NGK Spark Plug Co., Ltd.
发明人： Inagaki, Hiroshi
IPC分类号： G01N27/406 , G01N27/419
CPC分类号： G01N27/419 , G01N27/4065

5. 发明公开

EP1571444A3 Gas detecting system 有权转让
标题翻译：气体检测系统
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
申请人： NGK SPARK PLUG CO., LTD
发明人： Inoue, Yoshinori , Ieda, Norikazu , Tanaka, Mashiro , Inagaki, Hiroshi
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。

6. 发明公开

EP1961940A2 Diagnostic method and control apparatus for gas sensor 有权转让
标题翻译：气体传感器的诊断方法和控制装置
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
申请人： NGK Spark Plug Co., Ltd. , SUZUKI MOTOR CORPORATION
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。

7. 发明公开

EP1677103A3 Method and apparatus for diagnosing an abnormality of a gas-concentration measuring apparatus 有权转让
标题翻译：用于检测气体测量装置的异常的方法和装置
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
申请人： NGK SPARK PLUG CO., LTD
发明人： Inoue, Yoshinori , Inagaki, Hiroshi , Ieda, Norikazu
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.

8. 发明公开

EP1217206A2 Ignition apparatus for internal combustion engine 审中-公开
标题翻译： Zündapparatfüreine Brennkraftmaschine
公开(公告)号：EP1217206A2
公开(公告)日：2002-06-26
申请号：EP01310807.1
申请日：2001-12-21
申请人： NGK SPARK PLUG CO., LTD
发明人： Inagaki, Hiroshi
IPC分类号： F02P3/05 , F02P9/00
CPC分类号： F02P9/007 , F02P3/051
摘要： In an ignition apparatus for internal combustion engine, since a current caused to flow by an induced voltage generated at both ends of a secondary winding L2 when starting conduction to a primary winding L1 is checked from the conduction by diode for prevention of a reverse current 31, a spark discharge is not generated between the electrodes 13a - 13b of the spark plug 13 when starting the conduction to a primary winding L1. After ending the spark discharge, the ionized current is generated between the electrodes of the spark plug by impressing the induced voltage (the ionized current generating voltage) created at both ends of the air-fuel mixture by a residual energy of the ignition coil 15.
摘要翻译：在用于内燃机的点火装置中，由二极管的导通来检查在从初级绕组L1开始导通时由次级绕组L2的两端产生的感应电压流过的电流，以防止反向电流31 当开始导通到初级绕组L1时，在火花塞13的电极13a-13b之间不产生火花放电。在结束火花放电之后，通过将空燃混合物的两端产生的感应电压（电离电流产生电压）施加到点火线圈15的剩余能量，在火花塞的电极之间产生电离电流。

9. 发明公开

EP0933631A2 Connector for nox sensor 有权
标题翻译：的NOx传感器
公开(公告)号：EP0933631A2
公开(公告)日：1999-08-04
申请号：EP99300591.7
申请日：1999-01-27
申请人： NGK SPARK PLUG CO., LTD.
发明人： Inagaki, Hiroshi , Kondo, Noriaki
IPC分类号： G01N27/417
CPC分类号： G01N27/417
摘要： A connector 2b for an NOx sensor is connected via a cable C to an end of a sensor body 2a through which a first pump current and a second pump current flow according to the concentration of oxygen and that of NOx, respectively, contained in a gas to be measured. The connector 2b is provided with not only terminals for inputting a signal to and outputting a signal from the sensor body 2a but also a label resistor RL having resistance corresponding to characteristics (relationship between oxygen concentration and first pump current and that between NOx concentration and second pump current) of the sensor body 2a and label signal output terminals T01 and T02 connected to opposite ends of the label resistor RL. On the basis of characteristics of the sensor body 2a, which are identified from the resistance of the label resistor RL which, in turn, is identified via the terminals T01 and T02, the oxygen concentration and the NOx concentration are accurately obtained from detected values of the first and second pump currents. This enables an NOx sensor to always perform accurate measurement irrespective of variations in characteristics among NOx sensors.
摘要翻译：用于NOx传感器的连接器2b经由电缆C连接到传感器主体2a的端部，通过该端部，第一泵电流和第二泵电流分别根据包含在气体中的氧气和NOx的浓度流动待测。连接器2b不仅具有用于向传感器主体2a输入信号并输出信号的端子，而且还具有对应于特性（氧浓度与第一泵电流之间的关系以及NOx浓度与第二泵电流之间的关系）的标签电阻器RL 泵电流）和连接到标签电阻器RL的相对端的标签信号输出端子T01和T02。基于从标签电阻器RL的电阻识别的传感器体2a的特性，再次通过端子T01和T02识别氧传感器本体2a的氧浓度和NOx浓度，第一和第二泵电流。这使得NOx传感器总是能够执行精确的测量，而与NOx传感器之间的特性变化无关。

10. 发明公开

EP2330409A1 Sensor control device and sensor control method 有权转让
标题翻译： Gassensorsteuervorrichtung und Gassensorsteuerverfahren
公开(公告)号：EP2330409A1
公开(公告)日：2011-06-08
申请号：EP10015238.8
申请日：2010-12-02
申请人： NGK Spark Plug Co., Ltd.
发明人： Kawai, Takeshi , Inagaki, Hiroshi , Shiotani, Koji , Onogi, Hirotaka , Teramoto, Satoshi
IPC分类号： G01N27/407 , G01N27/419 , F02D41/14
CPC分类号： G01N27/419 , F02D41/1454 , F02D41/146 , F02D41/1494 , F02D41/2432 , F02D41/2474 , G01N27/407
摘要： [Objective] An object is to provide a sensor control apparatus and a sensor-control-apparatus control method which can reduce variation in startup time among a plurality of times of execution of detection processing, in consideration of variation in output characteristic among a plurality of gas sensors.
[Means for Solution] In a sensor control apparatus, before drive control (S55 to S80) is started, preliminary control is executed so as to supply a constant current to a second oxygen pump cell over a constant time, to thereby control to a constant level the amount of oxygen pumped from a second measurement chamber to the outside of the second measurement chamber (S40 to 50). The preliminary control is executed under control conditions of the sensor control apparatus which are determined for each gas sensor and are associated with the amount of oxygen pumped from the second measurement chamber to the outside thereof. The control conditions bring into a target range the concentration correspondence value calculated after start of the drive control which is started after the preliminary control is executed in a state in which a reference gas having a known concentration is introduced into the gas sensor.
摘要翻译： [目的]本发明的目的是提供一种传感器控制装置和传感器控制装置控制方法，其可以在多次执行检测处理之间减少启动时间的变化，考虑到多个气体传感器。解决方案在传感器控制装置中，在开始驱动控制（S55〜S80）之前，执行预备控制，以在恒定时间内向第二氧气泵电池供给恒定电流，从而控制到恒定将从第二测量室泵送的氧气量调整到第二测量室外（S40至50）。在对于每个气体传感器确定的传感器控制装置的控制条件下执行初步控制，并且与从第二测量室泵送到其外部的氧气量相关联。控制条件使目标范围成为在将具有已知浓度的参考气体引入气体传感器的状态下执行预控制之后开始的驱动控制开始后计算出的浓度对应值。

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