公开(公告)号：US08513961B2

公开(公告)日：2013-08-20

申请号：US12688956

申请日：2010-01-18

申请人： Tomohisa Fujita ,  Takeshi Kawai ,  Satoshi Teramoto ,  Shigeki Mori

发明人： Tomohisa Fujita ,  Takeshi Kawai ,  Satoshi Teramoto ,  Shigeki Mori

IPC分类号： G01R27/08

CPC分类号： G01N27/4067 ,  G01N27/407

摘要： A defect detection method for a sensor in which a fixing member provides a seal between a sensor element and tubular metallic members, the method being capable of detecting breakage of a conductor caused by breakage of the element.

摘要翻译： 一种用于传感器的缺陷检测方法，其中定影构件在传感器元件和管状金属构件之间提供密封，该方法能够检测由元件断裂引起的导体断裂。

公开(公告)号：US20100225339A1

公开(公告)日：2010-09-09

申请号：US12688956

申请日：2010-01-18

申请人： Tomohisa Fujita ,  Takeshi Kawai ,  Satoshi Teramoto ,  Shigeki Mori

发明人： Tomohisa Fujita ,  Takeshi Kawai ,  Satoshi Teramoto ,  Shigeki Mori

IPC分类号： G01R27/08

CPC分类号： G01N27/4067 ,  G01N27/407

摘要： A defect detection method for a sensor in which a fixing member provides a seal between a sensor element and tubular metallic members, the method being capable of detecting breakage of a conductor caused by breakage of the element.

摘要翻译： 一种用于传感器的缺陷检测方法，其中定影构件在传感器元件和管状金属构件之间提供密封，该方法能够检测由元件断裂引起的导体断裂。

公开(公告)号：US6120677A

公开(公告)日：2000-09-19

申请号：US903940

申请日：1997-07-31

申请人： Tessho Yamada ,  Takeshi Kawai ,  Yuji Oi ,  Shigeki Mori ,  Satoshi Teramoto ,  Toshiya Matsuoka

发明人： Tessho Yamada ,  Takeshi Kawai ,  Yuji Oi ,  Shigeki Mori ,  Satoshi Teramoto ,  Toshiya Matsuoka

IPC分类号： F02D41/14 ,  G01N27/406 ,  G01N27/407

CPC分类号： G01N27/4065 ,  F02D41/1494

摘要： A constant current Iconst is applied to an electromotive force cell which is interposed between a gap (measurement chamber) of a fixed atmosphere and an oxygen reference chamber of a constant oxygen content, for measurement of a resistance value of the electromotive force cell, whereby the resistance value can be measured accurately irrespective of an oxygen content in an atmosphere to be measured by an oxygen sensor element or cell unit. The resistance value of the electromotive force cell is measured at a predetermined timing T2 after application of a current is started, so that a measure resistance value is free of a variation of a resistance value due to deterioration of porous electrodes of an electromotive force cell, such a variation being included in the measured resistance value in case the measurement is done by using an AC current, and therefore accurate measurement can be attained. A temperature control methods and a temperature control apparatus for an oxygen sensor, capable of detecting the temperature accurately without suspending measurement of an oxygen content for a long period of time are also provided. Further, a temperature control method and a temperature control apparatus for an oxygen sensor, capable of detecting not only the temperature of the electromotive force cell but the temperature of the pump cell by applying a current or voltage to the electromotive force cell are provided.

摘要翻译： 将恒定电流Iconst应用于介于固定气氛的间隙（测量室）和恒定氧含量的氧气参考室之间的电动势单元，用于测量电动势单元的电阻值，由此 可以精确地测量电阻值，而不管氧传感器元件或电池单元测量的气氛中的氧含量如何。 在施加电流开始之后，在预定定时T2测量电动势电池的电阻值，使得测量电阻值不会由于电动势电池的多孔电极的劣化而导致的电阻值的变化， 在通过使用AC电流进行测量的情况下，这种变化被包括在测量的电阻值中，因此可以获得精确的测量。 还提供了一种用于氧传感器的温度控制方法和温度控制装置，其能够准确地检测温度而不长时间地测量氧气含量。 此外，提供了一种用于氧传感器的温度控制方法和温度控制装置，其不仅可以通过向电动势单元施加电流或电压来检测电动势单元的温度，而且可以检测泵室的温度。

公开(公告)号：US07964073B2

公开(公告)日：2011-06-21

申请号：US11604218

申请日：2006-11-27

申请人： Masamichi Hiraiwa ,  Takeshi Kawai ,  Satoshi Teramoto ,  Shigeki Mori ,  Hiroshi Inagaki

发明人： Masamichi Hiraiwa ,  Takeshi Kawai ,  Satoshi Teramoto ,  Shigeki Mori ,  Hiroshi Inagaki

IPC分类号： G01N27/419

CPC分类号： G01N27/419

摘要： Using a gas detection voltage Vs output from a terminal CU, a determination is made at to whether, after startup of an air-fuel ratio detection apparatus (1), a full-range air-fuel ratio sensor (10) has reached a semi-activated state in which a determination can be made as to whether the air-fuel ratio is on the rich or lean side based on a change in a gas detection signal Vic. After determining that the sensor has reached the semi-activated state, the signal Vic is compared with a threshold to determine whether the air-fuel ratio is on the rich or lean side. In the apparatus (1), the potential difference between an outer pump electrode of a pump cell (14) and a reference electrode of an oxygen concentration measurement cell (24) is obtained via a first differential amplification circuit (53) as the gas detection signal Vic, the signal Vic being highly responsive to a change in air-fuel ratio of exhaust gas.

摘要翻译： 使用从端子CU输出的气体检测电压Vs，判定在空燃比检测装置（1）启动后，全范围空燃比传感器（10）到达半空 基于气体检测信号Vic的变化，能够进行空燃比是富气还是偏侧的判定。 在确定传感器已经达到半激活状态之后，将信号Vic与阈值进行比较，以确定空燃比是富有还是偏侧。 在装置（1）中，通过作为气体检测器的第一差分放大电路（53）获得泵电池（14）的外泵电极与氧浓度测定电池（24）的参比电极之间的电位差 信号Vic，信号Vic对废气的空燃比变化高度响应。

公开(公告)号：US20070119437A1

公开(公告)日：2007-05-31

申请号：US11604218

申请日：2006-11-27

申请人： Masamichi Hiraiwa ,  Takeshi Kawai ,  Satoshi Teramoto ,  Shigeki Mori ,  Hiroshi Inagaki

发明人： Masamichi Hiraiwa ,  Takeshi Kawai ,  Satoshi Teramoto ,  Shigeki Mori ,  Hiroshi Inagaki

IPC分类号： G01N27/41

CPC分类号： G01N27/419

摘要： Using a gas detection voltage Vs output from a terminal CU, a determination is made at to whether, after startup of an air-fuel ratio detection apparatus (1), a full-range air-fuel ratio sensor (10) has reached a semi-activated state in which a determination can be made as to whether the air-fuel ratio is on the rich or lean side based on a change in a gas detection signal Vic. After determining that the sensor has reached the semi-activated state, the signal Vic is compared with a threshold to determine whether the air-fuel ratio is on the rich or lean side. In the apparatus (1), the potential difference between an outer pump electrode of a pump cell (14) and a reference electrode of an oxygen concentration measurement cell (24) is obtained via a first differential amplification circuit (53) as the gas detection signal Vic, the signal Vic being highly responsive to a change in air-fuel ratio of exhaust gas.

摘要翻译： 使用从端子CU输出的气体检测电压Vs，判定在空燃比检测装置（1）启动后，全范围空燃比传感器（10）到达半空 基于气体检测信号Vic的变化，能够进行空燃比是富气还是偏侧的判定。 在确定传感器已经达到半激活状态之后，将信号Vic与阈值进行比较，以确定空燃比是富有还是偏侧。 在装置（1）中，通过作为气体检测器的第一差分放大电路（53）获得泵电池（14）的外泵电极与氧浓度测定电池（24）的参比电极之间的电位差 信号Vic，信号Vic对废气的空燃比变化高度响应。

公开(公告)号：US06334946B1

公开(公告)日：2002-01-01

申请号：US09321568

申请日：1999-05-28

申请人： Tomohiro Mabuchi ,  Shigeki Mori ,  Satoshi Teramoto ,  Takeshi Kawai

发明人： Tomohiro Mabuchi ,  Shigeki Mori ,  Satoshi Teramoto ,  Takeshi Kawai

IPC分类号： G01N2741

CPC分类号： G01N27/407

摘要： A method of stabilizing pump current in a gas sensor through suppression of oscillations of the pump current which result from pulsations of measured gas is provided. The gas sensor includes an oxygen pump element, an oxygen concentration cell element and a measurement gap between the oxygen pump element and the oxygen concentration cell element, and is operative to control the pump current through the oxygen pump element so that an output voltage of the oxygen concentration cell element is constant in order that an oxygen concentration in the measurement gap is maintained constant and detect an oxygen concentration in the measured gas on the basis of the pump current. The method comprising adjusting an activity of electrodes of an oxygen pump element so as to change a responsiveness in control of the pump current and thereby reduce an amplitude of the oscillations of the pump current. There is also provided the above described type gas sensor wherein the activity of the electrodes of the oxygen pump element is adjusted so as to change a responsiveness in control of the pump current and thereby reduce the oscillations of the pump current.

摘要翻译： 提供了通过抑制由测量气体的脉动引起的泵浦电流的振荡来稳定气体传感器中的泵电流的方法。 气体传感器包括氧气泵元件，氧浓度电池元件和氧气泵元件和氧浓度电池元件之间的测量间隙，并且可操作以控制通过氧气泵元件的泵浦电流，使得输出电压 氧浓度电池元件是恒定的，以便测量间隙中的氧浓度保持恒定，并且基于泵电流检测测量气体中的氧浓度。 所述方法包括调节氧气泵元件的电极的活性，以便改变控制泵电流的响应性，从而减小泵电流振荡的幅度。 还提供了上述类型的气体传感器，其中氧气泵元件的电极的活性被调节以改变控制泵浦电流的响应性，从而减少泵电流的振荡。

公开(公告)号：US5976350A

公开(公告)日：1999-11-02

申请号：US920722

申请日：1997-08-29

申请人： Tessho Yamada ,  Takeshi Kawai ,  Yuji Oi ,  Shigeki Mori ,  Satoshi Teramoto ,  Toshiya Matsuoka

发明人： Tessho Yamada ,  Takeshi Kawai ,  Yuji Oi ,  Shigeki Mori ,  Satoshi Teramoto ,  Toshiya Matsuoka

IPC分类号： G01N27/419 ,  F02D41/14 ,  G01N27/406 ,  G01N27/407

CPC分类号： F02D41/1494 ,  G01N27/4065

摘要： A method of detecting an activated condition of a wide range air-fuel ratio sensor is provided. With this method, application of a current to a heater is started idiately after an engine is started (S00). Then, a current Icp for pumping is passed through an electromotive force cell (S10). A lapse of a predetermined time Tin is waited for (S18). After a lapse of time Tin, a voltage Vs across both electrodes of the electromotive force cell is detected (S20) and labeled as Vs0 (S22). Then, application of Icp is suspended (S30) and a routine is held on standby until a time of 25 ms elapses (S35). At the point of time when the time of 25 ms has elapsed, the voltage across the electrodes on the opposite sides of the electromotive force cell is detected (S40) and labeled as Vs1 (S45). A resistance value Rs1 is calculated from Vs0, Vs1 and Icp (S50). The resistance value Rs1 is compared with a value Rss which has been prepared previously (S55) and it is judged, when Rs1 is smaller than Rss, that the electromotive force cell has been put into an activated condition. An apparatus for detecting an activated condition of a wide range air-fuel ratio sensor is also provided.

摘要翻译： 提供一种检测大范围空燃比传感器的激活状态的方法。 利用这种方法，在发动机启动之后，将电流施加到加热器（S00）。 然后，使电流Icp通过电动势电池（S10）。 等待经过预定时间锡（S18）。 经过一段时间后，检测到电动势单元的两个电极之间的电压Vs（S20）并标记为Vs0（S22）。 然后，停止应用Icp（S30），并且程序保持待机直到25ms的时间过去（S35）。 在经过25ms的时间的时刻，检测到电动势单元的相对侧的电极两端的电压（S40），标记为Vs1（S45）。 从Vs0，Vs1和Icp计算电阻值Rs1（S50）。 将电阻值Rs1与先前准备的值Rss进行比较（S55），当Rs1小于Rss时，判断为电动势单元已经处于激活状态。 还提供了用于检测大范围空燃比传感器的激活状态的装置。

公开(公告)号：US6099717A

公开(公告)日：2000-08-08

申请号：US965420

申请日：1997-11-06

申请人： Tessho Yamada ,  Takeshi Kawai ,  Yuji Oi ,  Shigeki Mori ,  Satoshi Teramoto ,  Toshiya Matsuoka

发明人： Tessho Yamada ,  Takeshi Kawai ,  Yuji Oi ,  Shigeki Mori ,  Satoshi Teramoto ,  Toshiya Matsuoka

IPC分类号： F02D41/14 ,  G01N27/407

CPC分类号： F02D41/1495 ,  F02D41/1474 ,  F02D41/1476

摘要： A method of detecting a deteriorated condition of a wide range air-fuel ratio sensor is provided. Firstly, a current is applied to an electromotive force cell to detect a voltage Vs0 across electrodes on opposite side surfaces of the cell. Application of the current is suspended, and a voltage drop Vsd1 across the electrodes is detected after lapse of a time ranging from 10 .mu.s to 1 ms after the application of the current is suspended. Based on the voltage drop Vsd1 is detected a first resistance value Rvs1 equated to the temperature of the electromotive force cell. Further, after lapse of a time ranging from 10 ms to 50 ms after the application of the current to the electromotive force cell is suspended, a voltage drop Vsd2 across the electrodes of the electromotive force cell is detected. Based on the voltage drop Vsd2 is detected a second resistance value Rvs2 equated to an internal resistance of the electromotive force cell including a resistance component resulting from deterioration. By comparison of the resistance values Rvs1 and Rvs2, the deteriorated condition of the wide range air-fuel ratio is detected. An apparatus for carrying out such a method is also provided.

摘要翻译： 提供了一种检测宽范围空燃比传感器劣化状况的方法。 首先，将电流施加到电动势单元以检测电池的相对侧表面上的电极之间的电压Vs0。 电流的施加被暂停，在暂停施加电流之后经过10μs至1ms的时间之后，检测电极两端的电压降Vsd1。 基于电压降Vsd1，检测到等于电动势单元的温度的第一电阻值Rvs1。 此外，在将电流施加到电动势电池之后经过了10ms至50ms的时间之后，检测到电动势单元的电极两端的电压降Vsd2。 基于电压降Vsd2，检测到等于包括由劣化导致的电阻分量的电动势单元的内部电阻的第二电阻值Rvs2。 通过比较电阻值Rvs1和Rvs2，检测宽范围空燃比的恶化条件。 还提供了一种用于执行这种方法的设备。

公开(公告)号：US08257578B2

公开(公告)日：2012-09-04

申请号：US12571928

申请日：2009-10-01

申请人： Satoshi Teramoto ,  Shigeki Mori ,  Hiroki Inouchi

发明人： Satoshi Teramoto ,  Shigeki Mori ,  Hiroki Inouchi

IPC分类号： G01N27/41 ,  G01N27/26

CPC分类号： G01N27/4067

摘要： An anomaly diagnosing apparatus and method for a gas sensor which includes a heater control section; a measurement section which outputs a detection signal for detecting an internal resistance of the gas sensor through a solid electrolyte via connection terminals and the electrodes within the gas sensor and which measures the internal resistance of the gas sensor based on a response signal input via the connection terminals in response to the output of the detection signal; and a diagnosing section which heats the solid electrolyte by use of the heater control section, obtains, after the start of heating, a first time required to reach a first resistance and a second time required to reach a second resistance different from the first resistance, and determines whether or not the gas sensor is anomalous by comparing a predetermined threshold value and a ratio of the first to second times.

摘要翻译： 一种用于气体传感器的异常诊断装置和方法，包括加热器控制部分; 测量部，其经由连接端子和气体传感器内的电极输出用于通过固体电解质检测气体传感器的内部电阻的检测信号，并且基于经由连接输入的响应信号来测量气体传感器的内部电阻 端子响应检测信号的输出; 以及利用加热器控制部分加热固体电解质的诊断部分，在加热开始之后获得达到第一电阻所需的第一时间和达到不同于第一电阻的第二电阻所需的第二时间， 并且通过比较预定阈值和第一次与第二次的比率来确定气体传感器是否异常。

公开(公告)号：US07951277B2

公开(公告)日：2011-05-31

申请号：US11349177

申请日：2006-02-08

申请人： Yukinobu Nagao ,  Masaki Nakagawa ,  Takeshi Kawai ,  Ryohei Aoki ,  Satoshi Teramoto

发明人： Yukinobu Nagao ,  Masaki Nakagawa ,  Takeshi Kawai ,  Ryohei Aoki ,  Satoshi Teramoto

IPC分类号： G01N27/407

CPC分类号： G01N27/4071

摘要： A prismatic multilayer gas sensor element and method of making the same, the prismatic multilayer gas sensor element (1) having a substantially rectangular cross section, and including a gas-sensing cell portion (2) formed at a distal end portion of the prismatic gas sensor element (1); and a posterior lead portion (3) adjoining the gas-sensing cell portion (2). The longitudinal lateral surfaces of the posterior lead portion (3) are coated with a non-porous alumina layer (11), the non-porous alumina layer (11) having a multilayered structure including at least a joining layer (11a) and a surface layer (11b). The longitudinal lateral surface of the gas-sensing portion (2) is not coated with a non-porous alumina layer.

摘要翻译： 一种棱柱形多层气体传感器元件及其制造方法，所述棱柱形多层气体传感器元件（1）具有基本上矩形的横截面，并且包括形成在棱柱形气体的远端部分处的气体感测单元部分（2） 传感器元件（1）; 和邻接气体感测单元部分（2）的后引线部分（3）。 后引线部分（3）的纵向侧表面涂覆有无孔氧化铝层（11），所述无孔氧化铝层（11）具有多层结构，所述多层氧化铝层至少包括接合层（11a）和表面 层（11b）。 气体感测部分（2）的纵向侧表面没有涂覆无孔氧化铝层。