利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

21 条记录 (耗时 0.027 秒)

    Humidity sensor and method of using the humidity sensor
    2.
    发明授权
    Humidity sensor and method of using the humidity sensor 有权
    湿度传感器和使用湿度传感器的方法

    公开(公告)号：US07210333B2

    公开(公告)日：2007-05-01

    申请号：US10857495

    申请日：2004-06-01

    申请人： Hiroki Fujita ,  Koichi Fujita ,  Satoshi Sugaya ,  Kenji Kato ,  Ryuji Inoue ,  Noboru Ishida

    发明人： Hiroki Fujita ,  Koichi Fujita ,  Satoshi Sugaya ,  Kenji Kato ,  Ryuji Inoue ,  Noboru Ishida

    IPC分类号： G01N7/00

    CPC分类号： G01N27/121

    摘要： A humidity-sensitive porous layer (13) of a humidity-sensitive element section (3) of a humidity sensor (1) is formed of a crystalline phase oxide grains such as Al2O3—SnO2—TiO2 and of a glass phase such as silicate glass covering the crystalline phase. The glass phase contains an alkali metal oxide and/or alkaline earth metal oxide such as Li2O. The humidity sensitive porous layer (13) assumes a skeletal structure that is formed of crystalline phase oxide grains covered or coated with the glass phase. A heater (17) of the humidity sensor is controlled to heat the humidity-sensitive element section (3) at a temperature ranging from 500° C. to 800° C. so as to clean off the humidity-sensitive element section while an internal combustion engine is running and exhausting fouling substances. Measurement of Humidity in an exhaust gas exhausted from an exhaust gas purifying apparatus of an internal combustion engine is carried out by using the humidity sensor (1), so long as the exhaust gas temperature does not exceed 100° C. regardless of whether or not the engine is running.

    摘要翻译： 湿度传感器（1）的湿度敏感元件部分（3）的湿度敏感多孔层（13）由诸如Al 2 O 3的结晶相氧化物晶粒形成 和玻璃相如覆盖结晶相的硅酸盐玻璃。 玻璃相含有碱金属氧化物和/或碱土金属氧化物如Li 2 O。 湿度敏感多孔层（13）呈现由覆盖或涂覆有玻璃相的结晶相氧化物颗粒形成的骨架结构。 控制湿度传感器的加热器（17），以在500℃至800℃的温度范围内加热湿度敏感元件部分（3），从而清洁湿度敏感元件部分，同时内部 内燃机正在运行并排出污垢物质。 通过使用湿度传感器（1）进行从内燃机的排气净化装置排出的废气中的湿度的测定，只要排气温度不超过100℃即可 发动机正在运行。

    Method for measuring NOx concentration and NOx concentration sensor
    3.
    发明授权
    Method for measuring NOx concentration and NOx concentration sensor 有权
    NOx浓度和NOx浓度传感器的测量方法

    公开(公告)号：US06344134B1

    公开(公告)日：2002-02-05

    申请号：US09232001

    申请日：1999-01-15

    申请人： Tessho Yamada ,  Noboru Ishida ,  Toshitaka Matsuura ,  Yoshiro Noda ,  Nobuhiro Hayakawa ,  Norihiko Nadanami ,  Satoshi Sugaya ,  Takaki Otsuka ,  Masashi Ando ,  Takafumi Oshima

    发明人： Tessho Yamada ,  Noboru Ishida ,  Toshitaka Matsuura ,  Yoshiro Noda ,  Nobuhiro Hayakawa ,  Norihiko Nadanami ,  Satoshi Sugaya ,  Takaki Otsuka ,  Masashi Ando ,  Takafumi Oshima

    IPC分类号： G01N27407

    CPC分类号： G01N27/417

    摘要： An apparatus and method using a two-serial space sensor (having first and second internal spaces 2,3) for accurately measuring NOx concentration in gas, e.g., exhausted from an internal combustion engine. Both NOx (nitrogen oxide) and oxygen are forced to be partially dissociated in the first space 2 to an oxygen concentration level of 2×10−7 to 2×10−10 atm by pumping out oxygen from the first space 2. The NOx concentration is determined based on the second current measured in the second space 4 and based on the NO dissociation percentage in the first chamber which is 0.5-50%, or preferably 2-20%. The NOx measurement accuracy is further improved when the above oxygen concentration level is maintained from 2×10−8 to 2×10−9 and the temperature drift of the sensor is maintained within ±5° C. under a sensor temperature range of 700-900° C.

    摘要翻译： 一种使用两串联空间传感器（具有第一和第二内部空间2,3）的装置和方法，用于精确测量例如从内燃机排出的气体中的NOx浓度。 通过从第一空间2中抽出氧，迫使NOx（氮氧化物）和氧在第一空间2中部分地离解为2x10-7至2×10-10大气压的氧浓度水平。基于 在第二空间4中测量的第二电流，并且基于第一室中的NO解离百分比为0.5-50％，或优选2-20％。 在700-900℃的传感器温度范围内，当上述氧气浓度水平保持在2×10 -8至2×10 -9，并且传感器的温度漂移保持在±5℃以内时，NOx测量精度进一步提高。

    Method and apparatus for measuring NOx gas concentration
    4.
    发明授权
    Method and apparatus for measuring NOx gas concentration 有权
    测量NOx气体浓度的方法和装置

    公开(公告)号：US06695964B1

    公开(公告)日：2004-02-24

    申请号：US09588504

    申请日：2000-06-07

    申请人： Masashi Ando ,  Noboru Ishida ,  Satoshi Sugaya ,  Takafumi Oshima ,  Norihiko Nadanami ,  Takaki Ootuka ,  Yoshikuni Sato ,  Tatsuo Okumura

    发明人： Masashi Ando ,  Noboru Ishida ,  Satoshi Sugaya ,  Takafumi Oshima ,  Norihiko Nadanami ,  Takaki Ootuka ,  Yoshikuni Sato ,  Tatsuo Okumura

    IPC分类号： G01N27407

    CPC分类号： G01N27/4074

    摘要： Method and sensor for measuring accurate measurement of NOx concentration in an exhaust gas containing O2,H2O, CO2 and NOx and a NOx gas concentration sensor. A first oxygen pump cell sufficiently pumps out oxygen in a measurement gas such as not to decompose NOx. A pair of electrodes is provided on an inner side and an outer side of a second measurement chamber into which the gas is introduced from a first measurement chamber via a diffusion resistance. A voltage is impressed across the paired electrodes for decomposing NOx in the second measurement chamber to dissociate oxygen which causes the current to flow in a second oxygen ion pump cell. The NOx gas concentration is measured for this current. The voltage impressed across the paired electrodes of the second oxygen ion pump cell is set so as not to dissociate H2O and CO2 present in the second measurement chamber.

    摘要翻译： 用于测量含有O 2，H 2 O，CO 2和NO x以及NOx气体浓度传感器的废气中的NOx浓度的精确测量的方法和传感器。 第一氧气泵电池在测量气体中充分抽出氧气，例如不分解NOx。 一对电极设置在第二测量室的内侧和外侧，气体通过扩散阻力从第一测量室引入到该第二测量室中。 在一对电极上施加电压，用于分解第二测量室中的NOx，以解离氧，这导致电流在第二氧离子泵电池中流动。 测量该电流的NOx气体浓度。 设置在第二氧离子泵电池的成对电极上施加的电压，以使第二测量室中不存在H 2 O和CO 2。

    Gas sensor
    8.
    发明授权
    Gas sensor 有权
    气体传感器

    公开(公告)号：US06635162B2

    公开(公告)日：2003-10-21

    申请号：US09397931

    申请日：1999-09-17

    申请人： Satoshi Sugaya ,  Norihiko Nadanami ,  Noboru Ishida ,  Takafumi Oshima

    发明人： Satoshi Sugaya ,  Norihiko Nadanami ,  Noboru Ishida ,  Takafumi Oshima

    IPC分类号： G01N27407

    CPC分类号： G01N27/417

    摘要： A gas sensor having a laminate structure composed of thin sheets of solid electrolyte and including a cavity portion 21 and an oxygen concentration cell 5. The oxygen concentration in the cavity portion 21 is held constant. The oxygen concentration cell 5 includes an active electrode 12 having a relatively high catalytic capability with respect to NOx or combustible gas and an inner common electrode 13/15 (serving as an inactive electrode and an oxygen-concentration-sensing electrode) having a relatively low catalytic capability with respect to NOx or combustible gas. The oxygen concentration cell 5 is disposed in the gas sensor so as to be exposed to the interior of the cavity portion 21. The concentration of NOx or combustible gas is determined based on an electromotive force (of the order of mV) generated between the active electrode 12 and the inner common electrode 13/15 by a concentration cell effect.

    摘要翻译： 具有由固体电解质薄片构成的层叠结构的气体传感器，包括空腔部21和氧浓度电池5.空腔部21中的氧浓度保持恒定。 氧浓度单元5包括相对于NOx或可燃性气体具有相对较高的催化能力的有源电极12和具有相对低的可燃气体的内部公共电极13/15（用作非活性电极和氧浓度感测电极） 相对于NOx或可燃气体的催化能力。 氧气浓度单元5设置在气体传感器中以暴露于空腔部分21的内部。NOx或可燃气体的浓度基于在活性物质之间产生的电动势（大约mV） 电极12和内部公共电极13/15。

    Nitrogen oxide concentration sensor
    9.
    发明授权
    Nitrogen oxide concentration sensor 失效
    氮氧化物浓度传感器

    公开(公告)号：US6071393A

    公开(公告)日：2000-06-06

    申请号：US866452

    申请日：1997-05-30

    申请人： Takafumi Oshima ,  Masashi Ando ,  Noboru Ishida ,  Satoshi Sugaya ,  Norihiko Nadanami

    发明人： Takafumi Oshima ,  Masashi Ando ,  Noboru Ishida ,  Satoshi Sugaya ,  Norihiko Nadanami

    IPC分类号： G01N27/407 ,  G01N33/00

    CPC分类号： G01N27/4074 ,  G01N27/419

    摘要： A small-sized inexpensive nitrogen oxide concentration sensor capable of measuring the concentration of the nitrogen oxide in a measuring gas to a high accuracy. A first oxygen pumping cell, an oxygen concentration measuring cell and a second oxygen pumping cell are formed in different solid electrolyte layers of zirconia and electrodes of oxygen concentration measuring cell are isolated from electrodes of the oxygen pumping cells by insulating film.

    摘要翻译： 一种能够以高精度测量测量气体中的氮氧化物的浓度的小型便宜的氮氧化物浓度传感器。 在氧化锆的不同的固体电解质层中形成第一氧气泵浦单元，氧浓度测量单元和第二氧气泵浦单元，并且通过绝缘膜将氧浓度测量单元的电极与氧气泵浦单元的电极隔离。