公开(公告)号：US20100101314A1

公开(公告)日：2010-04-29

申请号：US12607106

申请日：2009-10-28

申请人： Hisashi SASAKI ,  Kenji KATO ,  Koji SHIOTANI ,  Takeshi KAWAI

发明人： Hisashi SASAKI ,  Kenji KATO ,  Koji SHIOTANI ,  Takeshi KAWAI

IPC分类号： G01M15/04

CPC分类号： B01D53/9495 ,  B01D53/9418 ,  B01D53/944 ,  B01D53/9477 ,  B01D2251/2067 ,  B01D2257/404 ,  F01N3/208 ,  F01N2560/026 ,  Y02T10/24

摘要： A method and apparatus for detecting an abnormality of a nitrogen oxide purifying catalyst using an NOx sensor, the method including: calculating a detection integrated value by integrating corresponding values corresponding to the NOx sensor output signal obtained until a first predetermined detection period has elapsed after the NOx sensor begins to generate an output signal and subtracting a variation integrated value. The variation integrated value is calculated by integrating corresponding values obtained until a predetermined second detection period has elapsed after the NOx sensor beings to generate an output signal when driven in a gas atmosphere having a constant nitrogen oxide concentration.

摘要翻译： 一种使用NOx传感器检测氮氧化物净化催化剂的异常的方法和装置，所述方法包括：通过对与所获得的NOx传感器输出信号相对应的对应值进行积分，计算检测积分值，直到经过所述第一预定检测周期 NOx传感器开始产生输出信号并减去变化积分值。 通过积分所获得的相应值，在NOx传感器出现之后经过预定的第二检测周期以产生在具有恒定的氮氧化物浓度的气体气氛中驱动的输出信号，来计算变化积分值。

公开(公告)号：US20110132775A1

公开(公告)日：2011-06-09

申请号：US12957641

申请日：2010-12-01

申请人： Takeshi KAWAI ,  Hiroshi INAGAKI ,  Koji SHIOTANI ,  Hirotaka ONOGI ,  Satoshi TERAMOTO

发明人： Takeshi KAWAI ,  Hiroshi INAGAKI ,  Koji SHIOTANI ,  Hirotaka ONOGI ,  Satoshi TERAMOTO

IPC分类号： G01N27/41 ,  G01N27/407

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，以便在恒定时间内向第二氧泵单元提供恒定电流，从而控制为恒定 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预备控制，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进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：US20090280240A1

公开(公告)日：2009-11-12

申请号：US12463625

申请日：2009-05-11

申请人： Seiji OHYA ,  Tomohiro WAKAZONO ,  Kenji KATO ,  Koji SHIOTANI

发明人： Seiji OHYA ,  Tomohiro WAKAZONO ,  Kenji KATO ,  Koji SHIOTANI

IPC分类号： B05D5/12 ,  G01N27/26

CPC分类号： G01N27/4075

摘要： A gas sensor including a gas sensor element having a first measurement chamber (16); a first pumping cell (11); a second measurement chamber (18) into which a gas to be measured having a controlled oxygen partial pressure is introduced; and a second pumping cell (13) having a second inner pump electrode (13b) and a second counterpart electrode (13c) pump electrode configured to detect a specific gas component. The second inner pump electrode is made of a material that contains, as a principal ingredient, two kinds of Pt particles having different particle sizes and whose particle size ratio measured by a sedimentation particle-size distribution ranges from 1.75 to 14.2. A mixing ratio between large Pt particles and small Pt particles has a mass ratio of 10/90 to 50/50. A 10 kHz-1 Hz resistance value across the second pumping cell at 600° C. is 150Ω or less.

摘要翻译： 一种气体传感器，包括具有第一测量室（16）的气体传感器元件; 第一泵送单元（11）; 引入具有受控氧分压的待测气体的第二测量室（18）; 以及具有第二内泵电极（13b）和配置成检测特定气体成分的第二配对电极（13c）泵浦电极的第二泵浦电池（13）。 第二内泵电极由含有不同粒径的两种Pt颗粒作为主要成分的材料制成，其沉降粒度分布测定的粒径比为1.75〜14.2。 大Pt颗粒和小Pt颗粒之​​间的混合比的质量比为10/90至50/50。 在600℃下跨越第二抽滤单元的10kHz-1Hz电阻值为150Omega或更小。

公开(公告)号：US20130019655A1

公开(公告)日：2013-01-24

申请号：US13554340

申请日：2012-07-20

申请人： Masaki NAKAGAWA ,  Koji SHIOTANI ,  Tomohiro WAKAZONO

发明人： Masaki NAKAGAWA ,  Koji SHIOTANI ,  Tomohiro WAKAZONO

IPC分类号： G01N37/00

CPC分类号： G01N27/419

摘要： In a gas sensor element of a gas sensor, reference oxygen chamber (113) assumes the shape of a rectangular parallelepiped. A reference electrode (111) is disposed on a surface of a third solid electrolyte body (73) which is exposed to the reference oxygen chamber (113). A second outer electrode (117) is disposed opposite the reference electrode, on a surface of a second solid electrolyte body (77) which is exposed to the reference oxygen chamber. Further, a porous, insulative protection layer (165) is formed so as to cover the entire surface of the second outer electrode. A gap (167) is present between the reference electrode and the insulative protection layer. The thickness of the gap is greater than that of the insulative protection layer.

摘要翻译： 在气体传感器的气体传感器元件中，参考氧气室（113）呈长方体形状。 参考电极（111）设置在暴露于基准氧气室（113）的第三固态电解质体（73）的表面上。 第二外部电极（117）与参考电极相对设置在暴露于参考氧气室的第二固体电解质体（77）的表面上。 此外，形成多孔绝缘保护层（165）以覆盖第二外部电极的整个表面。 在参考电极和绝缘保护层之间存在间隙（167）。 间隙的厚度大于绝缘保护层的厚度。