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：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。