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74 条记录 (耗时 0.028 秒)

    Gas sensor
    4.
    发明公开
    Gas sensor 有权
    气体传感器

    公开(公告)号：EP1037041A2

    公开(公告)日：2000-09-20

    申请号：EP00301955.1

    申请日：2000-03-09

    申请人： NGK SPARK PLUG CO., LTD

    发明人： Nadanami, Norihiko ,  Oshima, Takafumi ,  Fujita, Hiroki ,  Inoue, Ryuji

    IPC分类号： G01N27/407

    CPC分类号： G01N27/4074 ,  G01N33/005

    摘要： A gas sensor comprising a proton-conductive layer 5 formed of a polymer electrolyte; first and second electrodes 3 and 4 disposed in contact with the proton-conductive layer 5 and having a function of dissociating hydrogen; a gas-diffusion-rate limiting layer 2 disposed between a measurement gas atmosphere and the first electrode 3 and adapted to diffuse the gas under measurement to the first electrode 3 in a diffusion-rate limited state; and a dense support 1 supporting these elements. Hydrogen gas having reached the first electrode 3 via the gas-diffusion-rate limiting layer 2 is dissociated into protons by virtue of the catalytic action of Pt contained in the electrode and the voltage applied to the first electrode 3, and the generated protons are pumped to the second electrode 4 via the proton-conductive layer 5 and are converted to hydrogen gas, which diffuses into the measurement gas atmosphere. When the applied voltage is sufficiently high, saturation current flows between the first and second electrodes 3 and 4, and the magnitude of the saturation current varies in proportion to the hydrogen gas concentration of the gas under measurement.
    A hydrogen gas sensor which operates at low temperature in a hydrogen-rich atmosphere, and can accurately measure hydrogen gas concentration of a fuel gas of a fuel cell, is thereby provided.

    摘要翻译： 气体传感器，包括由聚合物电解质形成的质子传导层5; 设置成与质子传导层5接触并具有离解氢的功能的第一和第二电极3和4; 气体扩散速率限制层2，其设置在测量气体气氛与第一电极3之间，并且适于将扩散速率限制状态下的被测气体扩散到第一电极3; 和支持这些元素的密集支撑1。 通过气体扩散速率限制层2到达第一电极3的氢气借助于包含在电极中的Pt的催化作用和施加到第一电极3的电压而离解为质子，并且产生的质子被泵送 通过质子传导层5传递到第二电极4，并转化成氢气，其扩散到测量气体气氛中。 当施加的电压足够高时，饱和电流在第一和第二电极3和4之间流动，并且饱和电流的大小与被测气体的氢气浓度成比例变化。 由此，提供一种氢气传感器，该氢气传感器在富氢气氛下以低温进行动作，能够高精度地测定燃料电池的燃料气体的氢气浓度。

    LaGaO3 sintered body
    6.
    发明公开
    LaGaO3 sintered body 有权
    Sinterkörperaus LaGaO3

    公开(公告)号：EP1026133A2

    公开(公告)日：2000-08-09

    申请号：EP00102641.8

    申请日：2000-02-08

    申请人： NGK SPARK PLUG CO., LTD

    发明人： Fujita, Hiroki ,  Inoue, Ryuji ,  Oshima, Takafumi

    IPC分类号： C04B35/01 ,  G01N27/407

    CPC分类号： C04B35/01 ,  G01N27/4073

    摘要： Disclosed is an LaGaO 3 sintered body which comprises lanthanum, gallium, oxygen and at least one of other elements, and has at least three crystal phases of different composition formulae.

    摘要翻译： 公开了一种LaGaO 3烧结体，其包含镧，镓，氧和至少一种其它元素，并且具有不同组成式的至少三个结晶相。

    Method and apparatus using a gas concentration sensor for accurately controlling an air fuel ratio in an internal combustion engine
    7.
    发明公开
    Method and apparatus using a gas concentration sensor for accurately controlling an air fuel ratio in an internal combustion engine 有权
    用于使用气体浓度传感器精确地控制在内燃发动机的空气 - 燃料比的方法和装置

    公开(公告)号：EP1022451A2

    公开(公告)日：2000-07-26

    申请号：EP00300139.3

    申请日：2000-01-11

    申请人： NGK SPARK PLUG CO., LTD

    发明人： Sato, Yoshikuni ,  Ishida, Noboru ,  Ishikawa, Hideki ,  Oshima, Takafumi ,  Sato, Yasushi

    IPC分类号： F02D41/14

    CPC分类号： F02D41/1459 ,  F02D41/0042 ,  F02D41/0045 ,  F02D41/144 ,  F02D41/2441 ,  F02D41/2474 ,  F02D2200/0614 ,  G01N2291/02809

    摘要： The present invention provides a method and apparatus using a gas concentration sensor for accurately controlling an air fuel ratio in an internal combustion engine, featuring in that before the fuel-vaporized gas purged from the canister enters into the intake manifold whereat the sensor detects the gas concentration of the purged gas, the sensor is adjusted so as to adjust a zero point (or zero output level) of the sensor output.
    In step 100, a judgment is made as to whether the flow rate of air reaches a predetermined level. In step 110, processing for zero-point correction of the gas concentration sensor is performed. Specifically, in a state in which the purge valve 17 is closed, concentration of purge gas is measured by use of the gas concentration sensor 4, and a sensor output S1 at that time is obtained. Subsequently, the sensor output S1 is compared with a correct sensor output S0 in order to obtain a difference ΔS therebetween. Accordingly, during subsequent gas concentration measurement, a value S3 obtained through subtraction of the difference ΔS from an obtained sensor output S2 is used as a correct sensor output. In step 120, a supply amount of purge gas, i.e., a concentration of the purge gas to be supplied is obtained. In subsequent step 130, the purge valve 17 is driven in order to supply purge gas to the intake pipe 2 in a required amount (A%).

    摘要翻译： 本发明提供使用气体浓度传感器，用于精确地设置在控制内燃机的空气燃料比，具有在之前从罐吹扫燃料汽化气体进入进气歧管，在这里，传感器没有检测气体的方法和装置 吹扫气体的浓度，所述传感器被调整，以调整零点传感器输出的（或零输出电平）。 在步骤100中，判断作出是否空气的流速达到预定水平。 在步骤110中，执行用于气体浓度传感器的零点校正处理。 具体而言，在将净化阀17关闭的状态下，净化气体的浓度是通过使用气体浓度传感器4的测量，并且一个传感器的输出S1在没有时间被获得。 随后，传感器输出S1被以正确的传感器输出S0，以便获得存在之间的差DELTA标准相比较。 因此，随后的气体浓度测量过程中，一个值S3通过从获得的传感器输出S2被用作正确的传感器输出的差DELTA S的减法获得。 在步骤120中，吹扫气体，即的供给量，所供给的净化气体的浓度被获得。 之后的放气阀17，以供应吹扫气体到进气管2步骤130中，在一个所需的量（A％）驱动。

    Method and sensor for measuring NOx concentration
    9.
    发明公开
    Method and sensor for measuring NOx concentration 有权
    Verfahren zur Konzentrationsmessung von NOx

    公开(公告)号：EP0930501A2

    公开(公告)日：1999-07-21

    申请号：EP99101007.5

    申请日：1999-01-18

    申请人： NGK Spark Plug Co. Ltd.

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

    IPC分类号： G01N27/417

    CPC分类号： G01N27/417

    摘要： The invention relates to an apparatus and a 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 x 10 -7 to 2 x 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 space (2) 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 x 10 -8 to 2 x 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： 本发明涉及一种使用双串行空间传感器（具有第一和第二内部空间（2,3））的装置和方法，用于精确地测量例如从内燃机排出的气体中的NOx浓度。 在第一空间（2）中，NOx（氮氧化物）和氧被强制部分解离，氧浓度水平为2×10 -7至2×10 -10 atm，通过从第一空间 空间（2）。 基于在第二空间（4）中测量的第二电流，并且基于第一空间（2）中的NO解离百分比为0.5-50％，或优选2-20％来确定NOx浓度。 当上述氧浓度水平维持在2×10 -8至2×10 -9时，NOx传感器的测量精度进一步提高，传感器的温度漂移保持在+/- 5℃以下 温度范围700-900℃