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1. 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。

2. 发明公开

EP0816656A3 An air/fuel ratio detection device and an air/fuel ratio control device 失效
标题翻译： Einrichtung zur Detektion des Luft /Kraftstoffverhältnissesund zur Steuerung des Luft /Kraftstoffverhältnisses
公开(公告)号：EP0816656A3
公开(公告)日：1999-11-10
申请号：EP97109913.0
申请日：1997-06-18
申请人： NGK Spark Plug Co. Ltd.
发明人： Kondo, Noriaki , Inagaki, Hiroshi , Miyata, Shigeru
IPC分类号： F02D41/14
CPC分类号： F02D41/1474 , F01N3/22 , F02D35/003
摘要： An air/fuel ratio detection device and an air/fuel ratio control device, in which combustion of an engine is controlled with a simple means and toxic substances in exhaust gas discharged from the engine are reduced. Time A during which a lean signal is at a high level is measured. If the time A is shorter than the predetermined value, it is determined that the air/fuel ratio is richer than a target value, and time B during which an electromagnetic valve 21 is open is lengthened, increasing the quantity of supply air and making leaner the fuel mixed air, such that the target air/fuel ratio is approached. If the time A is longer than the predetermined value, it is determined that the air/fuel ratio is leaner and the time B is shortened.
摘要翻译：一种空气/燃料比检测装置和空燃比控制装置，其中以简单的方式控制发动机的燃烧，并且减少从发动机排出的废气中的有毒物质。测量稀疏信号处于高电平的时间A. 如果时间A短于预定值，则确定空燃比比目标值更浓，并且电磁阀21打开的时间B被延长，从而增加供气量并使其变稀燃料混合空气，使得目标空气/燃料比接近。如果时间A长于预定值，则确定空燃比较稀，时间B缩短。

3. 发明公开

EP0816656A2 An air/fuel ratio detection device and an air/fuel ratio control device 失效
标题翻译：装置，用于检测空气/燃料比和控制空气/燃料比
公开(公告)号：EP0816656A2
公开(公告)日：1998-01-07
申请号：EP97109913.0
申请日：1997-06-18
申请人： NGK Spark Plug Co. Ltd.
发明人： Kondo, Noriaki , Inagaki, Hiroshi , Miyata, Shigeru
IPC分类号： F02D41/14
CPC分类号： F02D41/1474 , F01N3/22 , F02D35/003
摘要： An air/fuel ratio detection device and an air/fuel ratio control device, in which combustion of an engine is controlled with a simple means and toxic substances in exhaust gas discharged from the engine are reduced. Time A during which a lean signal is at a high level is measured. If the time A is shorter than the predetermined value, it is determined that the air/fuel ratio is richer than a target value, and time B during which an electromagnetic valve 21 is open is lengthened, increasing the quantity of supply air and making leaner the fuel mixed air, such that the target air/fuel ratio is approached. If the time A is longer than the predetermined value, it is determined that the air/fuel ratio is leaner and the time B is shortened.

4. 发明授权

EP0816656B1 An air/fuel ratio detection device and an air/fuel ratio control device 失效
标题翻译：装置，用于检测空气/燃料比和控制空气/燃料比
公开(公告)号：EP0816656B1
公开(公告)日：2001-08-01
申请号：EP97109913.0
申请日：1997-06-18
申请人： NGK Spark Plug Co. Ltd.
发明人： Kondo, Noriaki , Inagaki, Hiroshi , Miyata, Shigeru
IPC分类号： F02D41/14
CPC分类号： F02D41/1474 , F01N3/22 , F02D35/003

5. 发明公开

EP0833148A3 A method and a device for controlling an air /fuel ratio sensor 失效
标题翻译：用于控制空气燃料比传感器的方法和装置
公开(公告)号：EP0833148A3
公开(公告)日：1998-10-07
申请号：EP97116325.8
申请日：1997-09-19
申请人： NGK Spark Plug Co. Ltd.
发明人： Miyata, Shigeru , Kondo, Noriaki , Inagaki, Hiroshi
IPC分类号： G01N27/419 , G01N27/407
CPC分类号： G01N27/4065 , G01N27/419
摘要： An air/fuel ratio sensor is controlled such that the oxygen concentration of the measurement gas can be detected from a pump current substantially instantaneously after a heater turns on. In the air/fuel ratio sensor an oxygen pumping cell and an oxygen concentration measuring cell are each formed of a solid electrolytic layer interposed between a pair of porous electrodes. One of the electrodes of each cell defines a measurement gas chamber in which the diffusion of the measurement gas is controlled. After a micro current is supplied to the other electrode of the oxygen concentration measuring cell for a predetermined period of time, thereby forming an internal reference oxygen source, the supply of the micro current is stopped and at the same time a pump current in the oxygen pumping cell starts to be controlled until the interelectrode voltage of the oxygen concentration measuring cell reaches a target voltage. After the air/fuel ratio sensor is activated, the supply of the micro current is restarted.

6. 发明公开

EP0833148A2 A method and a device for controlling an air /fuel ratio sensor 失效
标题翻译：一种用于控制空气/燃料比传感器的方法和设备
公开(公告)号：EP0833148A2
公开(公告)日：1998-04-01
申请号：EP97116325.8
申请日：1997-09-19
申请人： NGK Spark Plug Co. Ltd.
发明人： Miyata, Shigeru , Kondo, Noriaki , Inagaki, Hiroshi
IPC分类号： G01N27/419 , G01N27/407
CPC分类号： G01N27/4065 , G01N27/419
摘要： An air/fuel ratio sensor is controlled such that the oxygen concentration of the measurement gas can be detected from a pump current substantially instantaneously after a heater turns on. In the air/fuel ratio sensor an oxygen pumping cell and an oxygen concentration measuring cell are each formed of a solid electrolytic layer interposed between a pair of porous electrodes. One of the electrodes of each cell defines a measurement gas chamber in which the diffusion of the measurement gas is controlled. After a micro current is supplied to the other electrode of the oxygen concentration measuring cell for a predetermined period of time, thereby forming an internal reference oxygen source, the supply of the micro current is stopped and at the same time a pump current in the oxygen pumping cell starts to be controlled until the interelectrode voltage of the oxygen concentration measuring cell reaches a target voltage. After the air/fuel ratio sensor is activated, the supply of the micro current is restarted.
摘要翻译：空气/燃料比传感器被控制为使得测量气体的氧气浓度可以在加热器接通之后基本瞬时地从泵电流中检测。在空燃比传感器中，氧气抽吸单元和氧气浓度测量单元各自由插入在一对多孔电极之间的固体电解质层形成。每个电池的一个电极限定了测量气体室，在该测量气体室中测量气体的扩散被控制。在将氧气浓度测量单元的另一个电极提供微电流一段预定的时间，从而形成内部参考氧源之后，停止供应微电流，同时停止氧气中的泵电流泵送单元开始被控制，直到氧浓度测量单元的电极间电压达到目标电压。在空燃比传感器启动后，微电流的供应重新开始。

7. 发明授权

EP0933631B1 NOx sensor 有权
标题翻译：的NOx传感器
公开(公告)号：EP0933631B1
公开(公告)日：2007-11-14
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 , G01N33/00
CPC分类号： G01N27/417

8. 发明公开

EP1324028A1 Method and apparatus for measuring oxygen concentration and nitrogen oxide concentration. 失效
标题翻译： Verfahren und Vorrrichtung zur Messung der Sauerstoffkonzentration und Stickstoffoxidkonzentration
公开(公告)号：EP1324028A1
公开(公告)日：2003-07-02
申请号：EP03007539.4
申请日：1997-11-10
申请人： NGK SPARK PLUG CO., LTD
发明人： Niyata, Shigeru , Kondo, Noriaki , Inagaki, Hiroshi
IPC分类号： G01N27/407 , G01N27/419 , G01N27/406
CPC分类号： G01N27/417 , G01N27/4074
摘要： Present invention provides a method and device for measuring an oxygen and a nitrogen oxide concentration comprising the steps of causing a small current to flow across an oxygen concentration measuring cell, and a first current to flow in a first oxygen pumping cell so that an output voltage of said oxygen concentration measuring cell will be of a pre-set value; and applying a constant voltage across a second oxygen pumping cell, thereby decomposing nitrogen oxide contained in said second measurement chamber, wherein said nitrogen oxide concentration is measured based on a value of a second current flowing in said second oxygen pumping cell, and said oxygen concentration is measured based on a value of said first current, wherein said temperature detection means is adapted to periodically interrupt said connection between said pump current control means and said oxygen concentration measuring cell and to cause, during such interruption, an amount of current to flow in a direction opposite to a direction of said small current for detecting an internal resistance of said oxygen concentration measuring cell from a voltage generated during said interruption between said electrodes of said oxygen concentration measuring cell.
摘要翻译：本发明提供了一种用于测量氧和氮氧化物浓度的方法和装置，包括以下步骤：使小电流流过氧浓度测量池，以及第一电流在第一氧气泵浦单元中流动，使得输出电压的所述氧浓度测量单元将具有预定值; 并且在第二氧气泵浦单元上施加恒定电压，从而分解所述第二测量室中包含的氮氧化物，其中所述氮氧化物浓度基于在所述第二氧气抽吸室中流动的第二电流的值来测量，并且所述氧浓度基于所述第一电流的值测量，其中所述温度检测装置适于周期性地中断所述泵电流控制装置和所述氧浓度测量单元之间的所述连接，并且在所述中断期间使电流量流入与所述小电流的方向相反的方向，用于从所述氧浓度测量单元的所述电极之间的所述中断期间产生的电压检测所述氧浓度测量单元的内部电阻。

9. 发明公开

EP0933526A2 Ion current detection apparatus 审中-公开
标题翻译： Apparat zur Detektion eines Ionenstromes
公开(公告)号：EP0933526A2
公开(公告)日：1999-08-04
申请号：EP99300511.5
申请日：1999-01-25
申请人： NGK SPARK PLUG CO., LTD.
发明人： Inagaki, Hiroshi , Kondo, Noriaki , Miyata, Shigeru
IPC分类号： F02P17/12
CPC分类号： F02P17/12 , F02P2017/125
摘要： An ion current detection apparatus which can detect ion current with a high degree of accuracy regardless of the presence of voltage damped oscillation and which does not cause contamination of a spark plug.
A spark discharge current Isp generated upon spark discharge of a spark plug 10 flows through a charge diode 28, a capacitor 24, and a diode 22, which form a closed loop together with the spark plug 10 and a secondary winding L2 of an ignition coil 12 that constitutes an ignition apparatus 2. As a result, a Zener diode 26 connected in parallel to these components generates a Zener voltage Vz and thereby charges the capacitor 24. When a preset wait time has elapsed after the ignition timing for starting spark discharge, the discharge switch 30 short-circuits the opposite ends of the charge diode 28 to discharge the capacitor 24, so that a high voltage having a polarity opposite that in the case of spark discharge is applied to the spark plug. An ion current Iio flowing at this time is detected by use of a resistor 22 connected in parallel to the diode 22.
摘要翻译：一种离子电流检测装置，无论电压阻尼振荡的存在如何，都可以高精度地检测离子电流，并且不会引起火花塞的污染。在火花塞10的火花放电时产生的火花放电电流Isp流过与火花塞10和点火线圈的次级绕组L2形成闭环的充电二极管28，电容器24和二极管22 结果，与这些部件并联连接的齐纳二极管26产生齐纳电压Vz，从而对电容器24充电。当在启动火花放电的点火正时之后经过预设的等待时间时，放电开关30使充电二极管28的相对端短路以对电容器24进行放电，使得在火花塞放电的情况下与极性相反的高电压被施加到火花塞。此时流过的离子电流Iio通过使用与二极管22并联连接的电阻器22来检测

10. 发明公开

EP0916941A2 Method and apparatus for detecting a functional condition of an NOx occlusion catalyst 有权
标题翻译：用于确定的NOx Verschliessungskatalysators的操作条件的方法和设备
公开(公告)号：EP0916941A2
公开(公告)日：1999-05-19
申请号：EP98119402.0
申请日：1998-10-14
申请人： NGK Spark Plug Co. Ltd.
发明人： Inagaki, Hiroshi , Kondo, Noriaki , Miyata, Sigeru
IPC分类号： G01N27/407 , F01N7/00 , G01N27/419
CPC分类号： F01N3/0842 , B01D53/9495 , F01N11/00 , F01N2550/02 , F01N2550/03 , F01N2570/04 , F02D41/028 , F02D41/146 , F02D41/1463 , G01N27/417 , Y02T10/47
摘要： A method and apparatus for detecting a functional condition of an NOx occlusion catalyst (S3) using an NOx sensor (2). In order to compensate for variations in oxygen concentration of the exhaust gas which would otherwise affect the detected NOx concentration downstream of the NOx occlusion catalyst (S3), a relative value is calculated as the difference between the detected NOx concentration and the value of the detected NOx concentration initially after start of operation control of an internal combustion engine (S1) at a lean air-fuel ratio. The occlusion capability of the NOx occlusion catalyst (S3) is judged to have deteriorated when an increase in the relative value exceeds a predetermined value. On the other hand, the NOx occlusion catalyst (S3) is judged to have suffered an anomaly when the rate of increase in the relative value becomes greater than a predetermined allowable value.
摘要翻译：一种用于检测NOx催化剂（S3），使用NOx传感器（2）的咬合的功能状况的方法和装置。为了补偿在排气的氧浓度的变化，否则将影响所检测到的NOx浓度的NOx吸留催化剂（S3）的下游，一个相对值被计算为所检测到的NOx浓度和所检测的值之间的差 NOx浓度在贫空气 - 燃料比的内燃机（S1）的操作控制的开始后最初阶段。该NOx吸留催化剂（S3）的遮挡能力被判断具有劣化当在相对值的增加超过预定值。在另一方面，在NO X吸藏催化剂（S3），判断当在相对值的增加率变得大于预定允许值时向遭受一个异常。

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