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1. 发明授权

US07073320B2 Fault detecting apparatus designed to detect different types of faults of gas sensor 有权
标题翻译：设计用于检测气体传感器不同类型故障的故障检测装置
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。

2. 发明授权

US06740217B2 Structure of gas sensor designed to minimize error of sensor output 有权
标题翻译：设计用于最小化传感器输出误差的气体传感器的结构
公开(公告)号：US06740217B2
公开(公告)日：2004-05-25
申请号：US10178711
申请日：2002-06-25
申请人： Keigo Mizutani , Eiichi Kurokawa , Masahiro Taguchi , Daisuke Makino
发明人： Keigo Mizutani , Eiichi Kurokawa , Masahiro Taguchi , Daisuke Makino
IPC分类号： G01N27407
CPC分类号： G01N27/419
摘要： A gas sensor consists of a pump cell, a monitor cell, and a sensor cell. The sensor cell is supplied with power to produce a sensor cell current. The monitor cell is supplied with power to produce a monitor cell current. A sensor cell and a monitor cell current detector are disposed between a sensor cell electrode exposed to a gas cavity and a sensor cell power supply and between a monitor cell electrode exposed to the gas cavity and a monitor cell power supply, thereby enabling the sensor cell current and the monitor cell current to be measured without addition of electric noises arising from current components flowing from the monitor cell to the sensor cell and vice versa.
摘要翻译：气体传感器由泵电池，监视器单元和传感器单元组成。传感器单元被供电以产生传感器电池电流。监视器单元被供电以产生监视器电池电流。传感器单元和监视单元电流检测器设置在暴露于气体腔的传感器单元电极和传感器单元电源之间以及暴露于气体腔的监视单元电极与监视单元电源之间，从而使传感器单元电流和监测单元电流，而不增加从监测单元流向传感器单元的电流分量产生的电噪声，反之亦然。

3. 发明授权

US06994780B2 Gas sensor and method of detecting gas concentration 有权
公开(公告)号：US06994780B2
公开(公告)日：2006-02-07
申请号：US10234248
申请日：2002-09-05
申请人： Keigo Mizutani , Kazunori Suzuki , Toshitaka Saito , Daisuke Makino
发明人： Keigo Mizutani , Kazunori Suzuki , Toshitaka Saito , Daisuke Makino
IPC分类号： G01N27/407
CPC分类号： G01N27/419
摘要： A gas sensor includes a measurement gas chamber into which a measurement gas is introduced. An oxygen pumping cell adjusts an oxygen concentration in the measurement gas chamber. An oxygen monitor cell has a monitor electrode exposed in the measurement gas chamber. The monitor electrode has an oxidizing activity with respect to a specific component of the measurement gas. A sensor cell has a sensor electrode exposed in the measurement gas chamber. The sensor electrode has an oxidizing activity with respect to the specific component of the measurement gas which is lower than the oxidizing activity of the monitor electrode. An oxygen-ion current in the oxygen monitor cell is detected. An oxygen-ion current in the sensor cell is detected. A concentration of the specific component of the measurement gas is detected from a relation between the detected oxygen-ion currents in the oxygen monitor cell and the sensor cell.

4. 发明授权

US06554983B2 Gas sensing element employable in an exhaust system of an internal combustion engine 有权
公开(公告)号：US06554983B2
公开(公告)日：2003-04-29
申请号：US09810180
申请日：2001-03-19
申请人： Hiroo Imamura , Toshitaka Saito , Keigo Mizutani , Daisuke Makino
发明人： Hiroo Imamura , Toshitaka Saito , Keigo Mizutani , Daisuke Makino
IPC分类号： G01N27407
CPC分类号： G01N27/419
摘要： An objective gas is successively introduced into first and second chambers which are connected via a narrow passage. A first monitor cell, provided on a surface of the first chamber, generates an electromotive force representing an oxygen concentration in the first chamber. A second monitor cell, provided on a surface of the second chamber, generates an electromotive force representing an oxygen concentration in the second chamber. A voltage applied to a pump cell is controlled based on the electromotive forces obtained from the first and second monitor cells.

5. 发明授权

US5676811A Air-fuel ratio detecting device 失效
标题翻译：空燃比检测装置
公开(公告)号：US5676811A
公开(公告)日：1997-10-14
申请号：US789709
申请日：1997-01-27
申请人： Daisuke Makino , Hisayoshi Ohta , Keigo Mizutani , Masataka Naito , Masanori Yamada , Masahiro Shibata , Hiromi Sano
发明人： Daisuke Makino , Hisayoshi Ohta , Keigo Mizutani , Masataka Naito , Masanori Yamada , Masahiro Shibata , Hiromi Sano
IPC分类号： G01N27/419 , G01N27/26
CPC分类号： G01N27/419
摘要： An air-fuel ratio detecting element is composed of an oxygen pump portion and an oxygen sensor portion which are provided on a single solid electrolyte sheet, a heating element, and a spacer. The oxygen pump portion is composed of a pair first of electrodes provided on opposite sides of the solid electrolyte sheet, and a communication hole which is formed through the solid electrolyte sheet and the electrodes. Electrodes are disposed on the solid electrolyte sheet on the same side as the second electrode, whereby the oxygen sensor portion is formed. The spacer has an opening and a slit-like opening. The heating element 4, the spacer, and the solid electrolyte sheet are stacked from bottom to top, and then the stacked assembly is baked. In this case, they are stacked such that the opening faces the first electrodes and the second electrode. By disposing the oxygen pump portion and the oxygen sensor portion on the same solid electrolyte sheet, structure can be made simpler compared with a conventional air-fuel ratio detecting element in which a solid electrolyte sheet is used for each of an oxygen pump portion and an oxygen sensor portion.
摘要翻译：空燃比检测元件由设置在单个固体电解质片，加热元件和间隔件上的氧泵部分和氧传感器部分组成。氧泵部由设置在固体电解质片的相对侧上的一对电极和通过固体电解质片和电极形成的连通孔构成。电极与第二电极位于同一侧的固体电解质片上，形成氧传感器部。间隔件具有开口和狭缝状开口。从底部到顶部堆叠加热元件4，间隔件和固体电解质片，然后烘烤堆叠的组件。在这种情况下，它们堆叠成使得开口面向第一电极和第二电极。通过将氧泵部和氧传感器部配置在相同的固体电解质片上，与以往的空氧燃料比检测元件相比，可以使结构更简单，其中使用固体电解质片作为氧泵部和氧传感器部分。

6. 发明申请

US20070084723A1 Structure of gas sensor element to provide enhanced measurement accuracy 审中-公开
标题翻译：气体传感器元件结构，提高测量精度
公开(公告)号：US20070084723A1
公开(公告)日：2007-04-19
申请号：US11580305
申请日：2006-10-13
申请人： Keigo Mizutani , Daisuke Makino , Kazunori Suzuki
发明人： Keigo Mizutani , Daisuke Makino , Kazunori Suzuki
IPC分类号： G01N27/26
CPC分类号： G01N27/4075
摘要： A gas sensor element is designed to determine the concentration of a selected component contained in gas and includes a sensor cell. The sensor cell is equipped with two electrodes one of which is exposed to a gas chamber into which the gas flows from outside the gas sensor element. The electrodes connect with leads extending to external terminals exposed to the atmospheric air. One of the leads connecting with one of the electrodes exposed to the gas chamber is made of material which includes a mixture of a metallic composition and a ceramic composition and contains 7% or less by weight of the ceramic composition based on a total weight of the mixture. This results in a decrease in porosity of the lead, which reduces the intrusion of oxygen gas into the gas chamber, thereby enhancing the accuracy in determining the concentration of the selected component of the gas.
摘要翻译：设计气体传感器元件以确定气体中包含的选定组分的浓度并且包括传感器单元。传感器单元配备有两个电极，其中一个电极暴露于气体从气体传感器元件外部流动的气体室中。电极连接到延伸到暴露于大气中的外部端子的引线。与暴露于气室的电极之一连接的引线中的一个由包括金属组合物和陶瓷组合物的混合物的材料制成，并且基于所述陶瓷组合物的总重量含有7重量％或更少的陶瓷组合物混合物。这导致铅的孔隙率降低，这减少了氧气进入气室的侵入，从而提高了确定气体选定组分浓度的准确性。

7. 发明授权

US07182846B2 Hydrogen-containing gas measurement sensor element and measuring method using same 失效
标题翻译：含氢气体测量传感器元件及其测量方法
公开(公告)号：US07182846B2
公开(公告)日：2007-02-27
申请号：US10447303
申请日：2003-05-29
申请人： Keigo Mizutani , Masataka Naito , Daisuke Makino , Kazunori Suzuki
发明人： Keigo Mizutani , Masataka Naito , Daisuke Makino , Kazunori Suzuki
IPC分类号： G01N27/26
CPC分类号： G01N27/4074
摘要： A gas sensor element is provided which is designed to measure the concentration of hydrogen-containing gas accurately. The sensor element includes an oxygen pump cell working to keep the concentration of oxygen contained in measurement gasses entering a measurement gas chamber at a low concentration level and a hydrogen-containing gas measurement cell. The hydrogen-containing gas measurement cell is made up of a proton-conductive solid electrolyte body and a first and a second gas measurement electrode affixed to the proton-conductive solid electrolyte body. The first gas measurement electrode is exposed to the measurement gas chamber and serves to produce a signal between the first and second gas measurement electrodes as a function of the concentration of the hydrogen-containing gas.
摘要翻译：提供了一种气体传感器元件，其设计用于精确测量含氢气体的浓度。传感器元件包括氧气泵电池，其工作以保持测量气体中所含的氧浓度进入低浓度水平的测量气室和含氢气体测量池。含氢气体测量单元由质子传导固体电解质体和固定在质子传导性固体电解质体上的第一和第二气体测量电极构成。第一气体测量电极暴露于测量气体室，用于在第一和第二气体测量电极之间产生作为含氢气体浓度的函数的信号。

8. 发明授权

US5985118A Solid electrolyte gas concentration detector 失效
标题翻译：固体电解质气体浓度检测仪
公开(公告)号：US5985118A
公开(公告)日：1999-11-16
申请号：US958388
申请日：1997-10-27
申请人： Daisuke Makino , Keigo Mizutani , Hisayoshi Ohta , Yoshimasa Hijikata , Kanehito Nakamura , Hiroshi Mori
发明人： Daisuke Makino , Keigo Mizutani , Hisayoshi Ohta , Yoshimasa Hijikata , Kanehito Nakamura , Hiroshi Mori
IPC分类号： G01N27/416 , G01N27/407 , G01N27/26
CPC分类号： G01N27/4074
摘要： A gas concentration detector using solid electrolyte layers laminated measures a concentration of gas constituents in measuring gas such as exhaust gas of an internal combustion engine without being influenced by oxygen concentration in the measuring gas. The measuring gas is introduced into an inner cavity of the detector and outside air as a reference gas is introduced into an air passage in the detector. Oxygen concentration in the measuring gas in the inner cavity is maintained at a predetermined level by operation of an oxygen pumping cell constituted by an ion conductive solid electrolyte layer and a pair of electrodes formed on both surfaces of the layer. The oxygen concentration in the inner cavity is measured by an oxygen sensor cell having one electrode exposed to the inner cavity and the other electrode exposed to the reference gas. The concentration of the gas constituents in the measuring gas is measured in terms of ion current generated in a detector cell constituted by an ion conductive solid electrolyte layer and a pair of electrodes formed on both surfaces of the layer, one electrode being exposed to the measuring gas in the inner cavity and the other exposed to the reference gas in the air passage. Either one of the sensor cell and detector cell electrodes exposed to the measuring gas in the inner cavity is made of a material active to the gas constituents to be measured and the other electrode is made of a material inactive thereto.
摘要翻译：使用固体电解质层层压的气体浓度检测器不受测量气体中的氧浓度的影响而测量诸如内燃机的废气的测量气体中的气体成分的浓度。当检测器中的空气通道中引入参考气体时，测量气体被引入到检测器和外部空气的内腔中。通过由离子传导固体电解质层和形成在该层的两个表面上的一对电极构成的氧抽吸电池的操作将内腔中的测量气体中的氧浓度保持在预定水平。通过具有暴露于内腔的一个电极和暴露于参考气体的另一电极的氧传感器单元来测量内腔中的氧浓度。测量气体中气体组分的浓度以离子导电固体电解质层和形成在该层的两个表面上的一对电极构成的检测器电池中产生的离子电流来测量，一个电极暴露于测量内腔中的气体，另一个暴露于空气通道中的参考气体。暴露于内腔中的测量气体的传感器单元和检测器单元电极中的任何一个由对待测量的气体成分有活性的材料制成，另一个电极由对其无活性的材料制成。

9. 发明授权

US08168054B2 Gas sensing element with increased response 有权
标题翻译：气体传感元件具有增加的响应
公开(公告)号：US08168054B2
公开(公告)日：2012-05-01
申请号：US12405635
申请日：2009-03-17
申请人： Keigo Mizutani , Shinya Teranishi , Katsuhide Akimoto , Shoichiro Emmei
发明人： Keigo Mizutani , Shinya Teranishi , Katsuhide Akimoto , Shoichiro Emmei
IPC分类号： G01N27/41
CPC分类号： G01N27/407
摘要： A gas sensing element is disclosed as having a measuring gas chamber to which measuring gases are admitted, a diffusion resistance portion for introducing measuring gases to the measuring gas chamber under diffusion resistance, a sensor cell for detecting a specified gas concentration of measuring gases, and an oxygen pump cell for adjusting an oxygen concentration in the measuring gases. The sensor cell includes a measuring electrode, placed facing the measuring gas chamber, and a reference electrode formed in pair with the measuring electrode. The oxygen pump cell includes an inner pump electrode placed facing the measuring gas chamber, and an outer pump electrode formed in pair with the inner pump electrode. The diffusion resistance portion is placed in an area inside of external end walls of the inner pump electrode to be exposed to the measuring gas chamber.
摘要翻译：公开了一种气体检测元件，其具有测量气体，容纳测量气体的扩散阻力部分，用于将扩散阻力的测量气体引入测量气体室的扩散阻力部分，用于检测测量气体的特定气体浓度的传感器单元，以及用于调节测量气体中的氧浓度的氧气泵电池。传感器单元包括面向测量气体室的测量电极和与测量电极成对成对的参考电极。氧泵单元包括面向测量气室放置的内泵电极和与内泵电极成对配合的外泵电极。扩散阻力部分放置在内泵电极的外端壁的内部以暴露于测量气室。

10. 发明申请

US20090205957A1 GAS SENSOR CONTROL DEVICE 有权
标题翻译：气体传感器控制装置
公开(公告)号：US20090205957A1
公开(公告)日：2009-08-20
申请号：US12388625
申请日：2009-02-19
申请人： Satoshi Hada , Katsuhide Akimoto , Shoichiro Emmei , Keigo Mizutani , Shinya Teranishi
发明人： Satoshi Hada , Katsuhide Akimoto , Shoichiro Emmei , Keigo Mizutani , Shinya Teranishi
IPC分类号： G01N27/16
CPC分类号： G01N27/4071 , G01N27/4065
摘要： A gas sensor control device is disclosed as including a sensor cell having a negative terminal, to which a current-voltage converter is connected, and a differential amplifier is connected to the current-voltage converter to provide a current measured result applied to a microcomputer. The current-voltage converter has an opposite-to-sensor terminal to which another differential amplifier is connected. A sensor-side terminal of the current-voltage converter and another differential amplifier is electrically connected to each other via an electric pathway having a sensor-current flow disabling pathway in which a switch circuit is provided. Closing the switch circuit allows a potential difference between both terminals of the current-voltage converter is zeroed. With the switch circuit closed, the microcomputer calculates an element current correcting value, while detecting an electromotive force of the sensor cell based on which a failure is determined.
摘要翻译：公开了一种气体传感器控制装置，其包括具有负极端子的传感器单元，电流 - 电压转换器连接到该负极端子，并且差分放大器连接到电流 - 电压转换器以提供施加到微型计算机的当前测量结果。电流 - 电压转换器具有与传感器相对的另一个差分放大器连接的端子。电流 - 电压转换器的传感器侧端子和另一个差分放大器经由具有传感器电流流动禁止通路的电路相互电连接，在该通路中设置开关电路。闭合开关电路允许电流 - 电压转换器的两个端子之间的电位差为零。在开关电路闭合的情况下，微机计算元件电流校正值，同时检测确定了故障的传感器单元的电动势。

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