公开(公告)号：US07073320B2

公开(公告)日：2006-07-11

申请号：US10841493

申请日：2004-05-10

申请人： Michiyasu Moritsugu ,  Takanao Tomura ,  Keigo Mizutani ,  Daisuke Makino ,  Eiichi Kurokawa

发明人： Michiyasu Moritsugu ,  Takanao Tomura ,  Keigo Mizutani ,  Daisuke Makino ,  Eiichi Kurokawa

IPC分类号： F01N3/00

CPC分类号： G01N27/4175 ,  G01N33/007

摘要： A fault detecting apparatus for a gas concentration sensor is provided. The apparatus includes a storage device and a fault detecting circuit. The storage device stores therein fault detectable conditions in which preselected different types of faults of the gas concentration sensor are allowed to be detected, respectively. The fault detecting circuit works to detect a selected one of the faults stored in said storage device. When one of the fault detectable conditions is encountered during operation of the gas concentration sensor, the fault detecting circuit initiates detection of a corresponding one of the faults based on an output of the gas concentration sensor, thereby enabling the fault detecting circuit to identify the type of one of the faults to be detected correctly.

摘要翻译： 提供了一种用于气体浓度传感器的故障检测装置。 该装置包括存储装置和故障检测电路。 存储装置存储其中分别允许检测气体浓度传感器的预选的不同类型的故障的故障可检测条件。 故障检测电路用于检测存储在所述存储设备中的选定故障之一。 当在气体浓度传感器运行期间遇到故障可检测条件之一时，故障检测电路基于气体浓度传感器的输出启动对应的一个故障的检测，从而使故障检测电路能够识别该类型 其中一个故障正确检测。

公开(公告)号：US5338431A

公开(公告)日：1994-08-16

申请号：US978076

申请日：1992-11-18

申请人： Hiroshi Yorita ,  Toshihiko Igashira ,  Michiyasu Moritsugu ,  Yoshiki Chujo

发明人： Hiroshi Yorita ,  Toshihiko Igashira ,  Michiyasu Moritsugu ,  Yoshiki Chujo

IPC分类号： G01N27/419 ,  F02D45/00 ,  F02M25/07 ,  G01N27/406 ,  G01N27/409 ,  G01N27/41

CPC分类号： G01N27/4065 ,  G01N27/419 ,  F02M2026/004

摘要： An oxygen concentration detecting apparatus having, a pumping cell and a sensing cell, electrodes formed on both surfaces of each of the pumping and sensing cells, a related support structure forming a closed space by being connected with the pumping and sensing cells, an opening communicating between the closed space and the surrounding environment, an electromotive force detector for detecting an electromotive force generated between the electrodes of the sensing cell, a voltage source for applying a voltage between the electrodes of the pumping cell, a current detector for detecting as a signal representing the oxygen concentration a current flowing in the pumping cell when a voltage is applied between the electrodes of the pumping cell, and a controller for controlling the voltage so that the electromotive force is constant at a specified value at which value the above-mentioned current is 70% or less of the limiting current.

摘要翻译： 具有泵浦单元和感测单元的氧浓度检测装置，形成在每个泵浦和感测单元的两个表面上的电极，通过与泵送和感测单元连接而形成闭合空间的相关支撑结构， 在闭合空间与周围环境之间的电动势检测器，用于检测在感测单元的电极之间产生的电动势，用于在泵浦单元的电极之间施加电压的电压源，用于检测作为信号的电流检测器 表示当在泵浦单元的电极之间施加电压时在泵浦单元中流动的电流的氧浓度，以及用于控制电压的控制器，使得电动势恒定在上述电流值的规定值 为极限电流的70％以下。

公开(公告)号：US06895800B2

公开(公告)日：2005-05-24

申请号：US10328147

申请日：2002-12-26

申请人： Takanao Tomura ,  Michiyasu Moritsugu ,  Eiichi Kurokawa

发明人： Takanao Tomura ,  Michiyasu Moritsugu ,  Eiichi Kurokawa

IPC分类号： G01N27/26 ,  G01N27/416 ,  G01N27/419 ,  G01N7/00

CPC分类号： G01N27/419

摘要： A gas concentration measuring apparatus has a gas sensor including pump, sensor, and monitor cells. The apparatus works to look up a predetermined voltage-to-current relation to determine an initial value to be applied to the pump cell as a function of a current output of the pump cell, apply the initial value of the voltage to the pump cell, and to sweep it temporarily. The apparatus works to correct the initial value of the voltage as a function of a current output of the sensor cell upon the sweep of the initial value of the voltage applied to the pump cell, thereby better maintaining gas concentration measuring accuracy with respect to, for example, aging of the sensor.

摘要翻译： 气体浓度测量装置具有包括泵，传感器和监视器单元的气体传感器。 该装置用于查找预定的电压 - 电流关系，以根据泵浦电池的电流输出来确定要施加到泵浦单元的初始值，将电压的初始值施加到泵浦单元， 并暂时扫荡。 该装置用于根据施加到泵浦电池的电压的初始值的扫描，校正作为传感器单元的电流输出的函数的电压的初始值，从而更好地维持气体浓度测量精度相对于 例如，传感器老化。

公开(公告)号：US06901785B2

公开(公告)日：2005-06-07

申请号：US10327942

申请日：2002-12-26

申请人： Takanao Tomura ,  Michiyasu Moritsugu ,  Eiichi Kurokawa

发明人： Takanao Tomura ,  Michiyasu Moritsugu ,  Eiichi Kurokawa

IPC分类号： G01N27/26 ,  G01N27/416 ,  G01N27/419

CPC分类号： G01N27/419

摘要： A gas concentration measuring apparatus has a gas sensor consisting of pump, sensor, and monitor cells. The apparatus works to determine the value of voltage applied to the pump cell when a change in current produced by the monitor cell or the sensor cell changes upon a change in the voltage applied to the pump cell varies greatly and uses it to determine a control point to which the voltage applied to the pump cell is to be controlled. This keeps a gas concentration measuring accuracy free from, for example, aging of the sensor.

摘要翻译： 气体浓度测量装置具有由泵，传感器和监视器单元组成的气体传感器。 当监测电池或传感器电池产生的电流变化在施加到泵电池的电压变化时变化时，该装置用于确定施加到泵电池的电压的值变化很大，并且使用它来确定控制点 对泵电池施加的电压进行控制。 这保持气体浓度测量精度不受例如传感器老化的影响。