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

Applicant: NGK Spark Plug Co., Ltd.

Inventor： Kawai, Takeshi ,  Inagaki, Hiroshi ,  Shiotani, Koji ,  Onogi, Hirotaka ,  Teramoto, Satoshi

IPC: G01N27/407 ,  G01N27/419 ,  F02D41/14

CPC classification number: G01N27/419 ,  F02D41/1454 ,  F02D41/146 ,  F02D41/1494 ,  F02D41/2432 ,  F02D41/2474 ,  G01N27/407

Abstract: [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.

公开(公告)号：EP2107364A1

公开(公告)日：2009-10-07

申请号：EP09004846.3

申请日：2009-04-01

Applicant: NGK SPARK PLUG CO., LTD

Inventor： Ohya, Seiji ,  Wakazono, Tomohiro ,  Nakao, Takashi ,  Sasaki, Hisashi ,  Shiotani, Koji

IPC: G01N27/407 ,  G01N27/417 ,  G01N33/00

CPC classification number: G01N27/419 ,  G01N27/4067

Abstract: A gas sensor (200) has a gas sensor element (10) including a first measurement chamber (16); a first pumping cell (11) having a first interior pump electrode (11c) and its counterpart electrode (11b); a second measurement chamber (18); a second pumping cell (13) that has a second interior pump electrode (13b); and a heater (50). The heater (50) has a lead section (50a); a first resistance portion (50bx) having a higher resistance than the lead portion (50a); and a main heating portion (50k) having a second resistance portion (50by) having a higher resistance than the first resistance portion (50bx) disposed at a leading end side in a longitudinal direction relative to a leading end of the first resistance portion (50bx). The second interior pump electrode (13b) is located within the first resistance portion (50bx) in the longitudinal direction.

Abstract translation: 气体传感器（200）具有包括第一测量室（16）的气体传感器元件（10）; 具有第一内部泵电极（11c）及其配对电极（11b）的第一泵送单元（11）; 第二测量室（18）; 具有第二内部泵电极（13b）的第二泵送单元（13）; 和加热器（50）。 加热器（50）具有引线部分（50a）; 具有比引线部分（50a）更高电阻的第一电阻部分（50bx）; 和主加热部（50k），其具有比第一电阻部（50bx）高的电阻的第二电阻部（50by），该第一电阻部（50bx）相对于第一电阻部（50bx）的前端配置在长度方向的前端侧 ）。 第二内部泵电极（13b）沿纵向位于第一电阻部分（50bx）内。

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

Applicant: NGK Spark Plug Co., Ltd.

Inventor： Kawai, Takeshi ,  Inagaki, Hiroshi ,  Shiotani, Koji ,  Onogi, Hirotaka ,  Teramoto, Satoshi

IPC: G01N27/407 ,  G01N27/419 ,  F02D41/14

CPC classification number: G01N27/419 ,  F02D41/1454 ,  F02D41/146 ,  F02D41/1494 ,  F02D41/2432 ,  F02D41/2474 ,  G01N27/407

Abstract: [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.

Abstract translation: [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。

公开(公告)号：EP2083263A3

公开(公告)日：2015-09-02

申请号：EP09000735.2

申请日：2009-01-20

Applicant: NGK Spark Plug Co., Ltd.

Inventor： Kato, Kenji ,  Sasaki, Hisashi ,  Shiotani, Koji

IPC: G01N27/41 ,  G01N33/00 ,  G01N27/407 ,  G01N27/417

CPC classification number: G01N33/0037 ,  G01N27/4074 ,  G01N27/4075 ,  G01N27/417 ,  Y02A50/245

Abstract: A NOx sensor includes a sensor element equipped with first and second pumping cells to define first and second measurement chambers. The first pumping cell exerts an oxygen pumping action against the first measurement chamber to adjust the oxygen concentration in the gas under measurement within the first measurement chamber to a given level. The second pumping cell exerts an oxygen pumping action against the second measurement chamber to produce a pumping cell current according to the NOx concentration in the gas under measurement. When the moisture content of the gas under measurement changes from 2 vol% to 8 vol%, the NOx sensor allows a variation of NOx concentration detection value based on the pumping cell current in such a manner that the NOx concentration detection value reaches a transient peak value of 20 ppm, or smaller and converges to ± 5 ppm of a reference value within 5 seconds.
Also a method of production of said sensor is disclosed.

公开(公告)号：EP2107364B1

公开(公告)日：2015-07-08

申请号：EP09004846.3

申请日：2009-04-01

Applicant: NGK SPARK PLUG CO., LTD

Inventor： Ohya, Seiji ,  Wakazono, Tomohiro ,  Nakao, Takashi ,  Sasaki, Hisashi ,  Shiotani, Koji

IPC: G01N27/407 ,  G01N27/417 ,  G01N33/00

CPC classification number: G01N27/419 ,  G01N27/4067

公开(公告)号：EP2083263A2

公开(公告)日：2009-07-29

申请号：EP09000735.2

申请日：2009-01-20

Applicant: NGK Spark Plug Co., Ltd.

Inventor： Kato, Kenji ,  Sasaki, Hisashi ,  Shiotani, Koji

IPC: G01N27/41 ,  G01N33/00

CPC classification number: G01N33/0037 ,  G01N27/4074 ,  G01N27/4075 ,  G01N27/417 ,  Y02A50/245

Abstract: A NOx sensor includes a sensor element equipped with first and second pumping cells to define first and second measurement chambers. The first pumping cell exerts an oxygen pumping action against the first measurement chamber to adjust the oxygen concentration in the gas under measurement within the first measurement chamber to a given level. The second pumping cell exerts an oxygen pumping action against the second measurement chamber to produce a pumping cell current according to the NOx concentration in the gas under measurement. When the moisture content of the gas under measurement changes from 2 vol% to 8 vol%, the NOx sensor allows a variation of NOx concentration detection value based on the pumping cell current in such a manner that the NOx concentration detection value reaches a transient peak value of 20 ppm, or smaller and converges to ± 5 ppm of a reference value within 5 seconds.
Also a method of production of said sensor is disclosed.

Abstract translation: NOx传感器包括配备有第一和第二泵浦单元以限定第一和第二测量室的传感器元件。 第一泵送单元对第一测量室施加氧气抽吸作用，以将第一测量室内测量气体中的氧浓度调节至给定水平。 第二泵送单元对第二测量室施加氧气抽吸作用，以根据测量气体中的NOx浓度产生泵浦电池电流。 当测量气体的水分含量从2vol％变化到8vol％时，NOx传感器允许基于泵浦单元电流的NOx浓度检测值的变化，使得NOx浓度检测值达到瞬时峰值 值在20ppm以下，并且在5秒内收敛到参考值的±5ppm。 还公开了一种生产该传感器的方法。