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

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： F02D41/1474 ,  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.

公开(公告)号：EP2594926A1

公开(公告)日：2013-05-22

申请号：EP12193058.0

申请日：2012-11-16

申请人： NGK Spark Plug Co., Ltd.

发明人： Inagaki, Hiroshi

IPC分类号： G01N27/406 ,  F02D41/14

CPC分类号： G01M15/042 ,  F02D41/0055 ,  F02D41/08 ,  F02D41/144 ,  F02D41/1458 ,  F02D41/1494 ,  F02D41/2474 ,  G01N27/4065 ,  G01N37/00 ,  G06F15/00

摘要： A sensor control device (12) for connection to an oxygen sensor (10) including a sensing element (11) that measures oxygen concentration in an intake atmosphere of an internal combustion engine (40) and a heater (17) that heats the sensing element, including a detection unit (13) that detects an output signal (IP) corresponding to the oxygen concentration output from the sensing element and a calculation unit (15) that calculates a compensation coefficient of the output signal that is used when calculating the oxygen concentration. The calculation unit collects compensation information used in calculating the compensation coefficient when the internal combustion engine is in operation and in a specific operation state in which the oxygen concentration in the intake atmosphere is subject to estimation. Also disclosed is a sensor control system (1) which includes an oxygen sensor (10) and the sensor control device (12).

摘要翻译： 一种用于连接到氧传感器（10）的传感器控制装置（12），其包括测量内燃机（40）进气环境中的氧气浓度的感测元件（11）和加热器（17） ，包括检测与检测元件输出的氧浓度对应的输出信号（IP）的检测单元（13），以及计算单元（15），其计算在计算氧浓度时使用的输出信号的补偿系数 。 计算单元收集在内燃机运转中计算补偿系数时使用的补偿信息，以及进气气氛中的氧浓度进行估计的特定运转状态。 还公开了一种传感器控制系统（1），其包括氧传感器（10）和传感器控制装置（12）。

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

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

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

申请人： NGK SPARK PLUG CO., LTD

发明人： Inoue, Yoshinori ,  Ieda, Norikazu ,  Tanaka, Masahiro ,  Inagaki, Hiroshi

IPC分类号： G01N27/407

CPC分类号： G01N27/4062 ,  G01N27/407

公开(公告)号：EP1890139A3

公开(公告)日：2009-09-09

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： G01N27/407

CPC分类号： G01N27/419 ,  G01N27/4065

摘要： A control circuit unit 31 for use connected to an NOx sensor 1 is disclosed. A first pump element control circuit 56 controls a voltage applied to a first pump element 3 so as to control the level of a partial pressure of oxygen contained in a first processing chamber 9 such that an output voltage of an oxygen concentration detection element becomes substantially constant. A first pump current is detected through use of a current detection resistor 101 and is then output via an A/D converter circuit 65. A second pump element control circuit 57 applies a constant voltage to a second pump element 5 in such a direction as to pump out oxygen from a second processing chamber 10. A second pump current is detected through use of a current detection resistor 107 and is then output via an A/D converter circuit 65. A detection signal indicative of the first pump current is used for determination of the oxygen concentration of a measurement gas. The detection signal indicative of the first pump current and a detection signal indicative of the second pump current are used for determination of the nitrogen oxides concentration of the measurement gas.

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

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。

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

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。

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。