公开(公告)号：US08877024B2

公开(公告)日：2014-11-04

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： G01N27/409 ,  G01N27/417

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：US08361306B2

公开(公告)日：2013-01-29

申请号：US12630423

申请日：2009-12-03

申请人： Satoshi Teramoto ,  Hirotaka Onogi ,  Koji Shiotani ,  Kenji Kato ,  Takashi Kawai

发明人： Satoshi Teramoto ,  Hirotaka Onogi ,  Koji Shiotani ,  Kenji Kato ,  Takashi Kawai

IPC分类号： G01N27/26 ,  G01N27/417

CPC分类号： G01N27/419

摘要： There is provided a control apparatus for a gas sensor, which has a sensor element equipped with first and second oxygen pumping cells. The sensor control apparatus is configured to drive the first oxygen pumping cell to adjust the oxygen concentration of gas under measurement, drive the second oxygen pumping cell to produce a flow of electric current according to the amount of oxygen pumped out of the oxygen concentration adjusted gas by the second oxygen pumping cell, perform specific drive control to control the amount of oxygen pumped by the second oxygen pumping cell to a predetermined level after startup of the sensor element and before the application of the drive voltage between the electrodes of the second oxygen pumping cell.

摘要翻译： 提供了一种用于气体传感器的控制装置，其具有配备有第一和第二氧气泵浦单元的传感器元件。 传感器控制装置被配置为驱动第一氧气泵送单元以调节测量气体的氧气浓度，驱动第二氧气泵送单元，根据从氧浓度调节气体中抽出的氧气的量产生电流 通过第二氧气泵送单元，执行特定的驱动控制，以在启动传感器元件之后并且在第二氧气泵送电极之间施加驱动电压之前，将第二氧气泵浦单元泵浦的氧气量控制到预定水平 细胞。

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：US09201040B2

公开(公告)日：2015-12-01

申请号：US13176106

申请日：2011-07-05

申请人： Yuichi Yamada ,  Takahiro Akiyama ,  Takuya Saito ,  Makoto Kume ,  Satoshi Teramoto ,  Noboru Matsui ,  Hiroshi Inagaki ,  Takeshi Kawai ,  Shinichiro Iwama

发明人： Yuichi Yamada ,  Takahiro Akiyama ,  Takuya Saito ,  Makoto Kume ,  Satoshi Teramoto ,  Noboru Matsui ,  Hiroshi Inagaki ,  Takeshi Kawai ,  Shinichiro Iwama

IPC分类号： G01M15/10 ,  G01N27/407

CPC分类号： G01N27/4078

摘要： A gas sensor including coating layers (64) and (69) of fluorine or a fluorine compound formed on the surface of a separator (60), including a front separator (61) and a rear separator (66), disposed inside a sheath (30). The coating layers (64) and (69) have water impermeability and water repellency. Even in the case where moisture contained in the atmosphere within a sheath (30) forms dew on the surface of the separator (60), the coating layers (64) and (69) prevent soaking of moisture into the separator (60), to thereby secure the insulation property of the separator (60). Also, the coating layers (64) and (69) having water repellency prevent a water droplet from spreading on the surface of the separator (60) with resultant formation of a film of water, to thereby prevent flow of leakage current via a film of water.

摘要翻译： 一种气体传感器，包括在隔膜（60）的表面上形成的氟或氟化合物的涂层（64）和（69），其包括前隔板（61）和后隔板（66） 30）。 涂层（64）和（69）具有防水性和防水性。 即使在护套（30）内的气氛中含有的水分在隔膜（60）的表面上形成露点的情况下，涂层（64）和（69）也防止水分进入隔板（60），使 从而确保隔板（60）的绝缘性。 此外，具有防水性的涂层（64）和（69）防止水滴在隔膜（60）的表面上扩散，从而形成水膜，从而防止泄漏电流通过膜 水。

公开(公告)号：US09297778B2

公开(公告)日：2016-03-29

申请号：US13418903

申请日：2012-03-13

申请人： Hirotaka Onogi ,  Kenji Kato ,  Satoshi Teramoto

发明人： Hirotaka Onogi ,  Kenji Kato ,  Satoshi Teramoto

IPC分类号： G01N27/407

CPC分类号： G01N27/4074

摘要： A sensor control apparatus is disclosed, including a preliminary control for supplying a constant current to a second oxygen pump cell of a gas sensor for a constant period of time so as to control to a constant level the amount of oxygen pumped out from a second measurement chamber (S40 to S50). At the beginning of drive control (S55 to S80), oxygen is pumped back into the second measurement chamber. During the pumping back operation, an NOX concentration correspondence value has a large time course change and is not stable. The NOX concentration correspondence value is corrected using correction data common among gas sensors, wherein the timing for applying the correction data is adjusted by making use of an application time determined in accordance with individual differences of each gas sensor.

摘要翻译： 公开了一种传感器控制装置，其包括用于向恒定时间段的气体传感器的第二氧气泵室提供恒定电流的初步控制，以便将从第二测量泵出的氧气量控制在恒定水平 （S40〜S50）。 在驱动控制开始时（S55〜S80），氧被泵回第二测量室。 在抽吸操作期间，NOX浓度对应值具有大的时程变化并且不稳定。 使用在气体传感器中公知的校正数据来校正NO x浓度对应值，其中通过利用根据每个气体传感器的个体差异确定的施加时间来调整用于应用校正数据的定时。

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。

公开(公告)号：US20060185978A1

公开(公告)日：2006-08-24

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： G01N27/26

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。

公开(公告)号：US20050205550A1

公开(公告)日：2005-09-22

申请号：US11082902

申请日：2005-03-18

申请人： Takuya Saito ,  Takeshi Kawai ,  Satoshi Teramoto

发明人： Takuya Saito ,  Takeshi Kawai ,  Satoshi Teramoto

IPC分类号： F02D41/14 ,  F02D45/00 ,  G01N27/00 ,  G01N27/12 ,  G01N27/407 ,  G01N27/409 ,  G01N33/00 ,  H05B1/02

CPC分类号： F02D41/1494 ,  G01N33/007

摘要： A control apparatus for a gas sensor, wherein a microcomputer 44, which is connected to an oxygen sensor 30 including a detection element 12 and a heater 14, detects the cooling water temperature Tw of the engine. The control apparatus determines that condensation water within the exhaust pipe is being generated when the cooling water temperature Tw is equal to or lower than 0° C. When equal to or lower than 0° C., the microcomputer 44 supplies to the heater 14 electrical power for maintaining the temperature of the detection element 12 within the range of 100° C. to a splash-water-cracking generation temperature (e.g., about 300° C.) at or above which cracking can occur in a laminated-type oxygen sensor element 10 due to splash of condensation water. Electrical power is supplied to the heater 14 such that a pulse signal Sh is output from the microcomputer 44, and the heater 14 is pulse-driven by use of a heater electrification control circuit 34.

摘要翻译： 一种用于气体传感器的控制装置，其中连接到包括检测元件12和加热器14的氧传感器30的微型计算机44检测发动机的冷却水温度Tw。 当冷却水温度Tw等于或低于0℃时，控制装置确定排气管内的冷凝水正在产生。当等于或低于0℃时，微计算机44向加热器14供应电 用于将检测元件12的温度保持在100℃的范围内的功率达到或高于其中的飞溅水裂解发生温度（例如，约300℃），其中层压型氧传感器 元素10由于冷凝水溅出。 向加热器14提供电力，使得从微计算机44输出脉冲信号Sh，并且通过使用加热器通电控制电路34对加热器14进行脉冲驱动。

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。