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486 条记录 (耗时 0.023 秒)

    NOx sensor
    5.
    发明授权
    NOx sensor 有权

    公开(公告)号：EP2107365B1

    公开(公告)日：2018-10-17

    申请号：EP09250955.3

    申请日：2009-03-30

    申请人： NGK Insulators, Ltd.

    发明人： HORISAKA, Sumiko ,  LEE, San Jae

    IPC分类号： G01N27/407 ,  G01N27/419

    CPC分类号： G01N27/4071 ,  G01N27/419

    摘要： A gas sensor for specifying a concentration of a predetermined gas component in a measurement gas on the basis of a current flowing in an oxygen ion conductive solid electrolyte by decomposition of the predetermined gas component, includes an internal space to which the measurement gas is introduced from an outside; a reference gas space to which a reference gas is introduced; a pumping cell provided to be capable of pumping out oxygen in the internal space by applying a predetermined voltage between a first electrode formed on a surface of the internal space and a second electrode formed on a different space from the internal space; and a measuring cell provided to be capable of measuring a current flowing between a measuring electrode formed on the surface of the internal space and a reference electrode formed to make contact with a reference gas, by applying a voltage between the measuring electrode and the reference electrode; wherein the first electrode is formed of porous cermet consisted of a noble metal and an oxygen ion conductive solid electrolyte, and the porosity of the first electrode is greater than or equal to 10% and less than or equal to 50%.

    Method and apparatus for controlling multi-gas sensor
    6.
    发明授权
    Method and apparatus for controlling multi-gas sensor 有权

    公开(公告)号：EP2293055B1

    公开(公告)日：2018-10-10

    申请号：EP10173769.0

    申请日：2010-08-24

    申请人： NGK Spark Plug Co., Ltd.

    发明人： Sugaya, Satoshi ,  Kakimoto, Shiro ,  Yamada, Tetuo ,  Matsutani, Wataru ,  Kojima, Takio

    IPC分类号： G01N27/419

    CPC分类号： G01N27/419 ,  G01N33/0037 ,  G01N33/0054 ,  Y02A50/245 ,  Y02A50/246

    摘要： [Objective] An object is to provide a method and apparatus for controlling a multi-gas sensor which can measure NO x concentration and ammonia concentration by use of a single gas sensor and can improve accuracy in measurement of ammonia concentration. [Means for Solution] A method for controlling a multi-gas sensor (200A) including an NO x sensor section (30A), and an ammonia sensor section (42) having at least paired electrodes (42a) and formed on an outer surface of the NO x sensor section. The NO x sensor section includes a first pumping cell (2) extending between the interior and exterior of a first measurement chamber (S1) and adapted to pump out or pump in oxygen of a gas under measurement introduced into the first measurement chamber, and a second pumping cell (4) extending between the interior and exterior of an NO x measurement chamber (S2) communicating with the first measurement chamber and configured such that a second pumping current (Ip2) flows between the paired second electrodes, the second pumping current corresponding to an NO x concentration of the gas under measurement. An oxygen concentration is calculated on the basis of a first pumping current flowing through the first pumping cell, and a corrected ammonia concentration is calculated on the basis of the oxygen concentration and the ammonia concentration output of the ammonia sensor section.

    GAS SENSOR
    8.
    发明公开
    GAS SENSOR 审中-公开

    公开(公告)号：EP3361245A1

    公开(公告)日：2018-08-15

    申请号：EP18160301.0

    申请日：2011-03-24

    申请人： NGK Insulators, Ltd.

    发明人： HORISAKA, Sumiko ,  FUJITA, Hiroki ,  MURAKAMI, Mika ,  ITO, Takashi

    IPC分类号： G01N27/419 ,  G01N27/407

    CPC分类号： G01N27/409 ,  G01N27/4071 ,  G01N27/4072 ,  G01N27/4074 ,  G01N27/417 ,  G01N27/419

    摘要： An object of the present invention is to provide a gas sensor whose measurement accuracy is stably maintained even if water adheres to an end portion of a sensor element. A gas sensor including a sensor element constituted by an oxygen-ion conductive solid electrolyte as a main component and detecting a predetermined gas component in a measurement gas includes: an external communication part having an opening opened to the outside, and introducing the measurement gas from the outside under a predetermined diffusion resistance; an internal space communicating with the external communication part; a first electrode formed on a surface of the internal space; a second electrode formed in a space different from the internal space; and a pumping cell operable to pump out oxygen existing in the internal space when a predetermined voltage is applied between the first electrode and the second electrode. The thickness of the external communication part is 50% or more and 100% or less of the thickness of the internal space.

    CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
    9.
    发明授权
    CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 有权

    公开(公告)号：EP2952722B1

    公开(公告)日：2018-03-14

    申请号：EP13874005.5

    申请日：2013-01-29

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： HAYASHITA, Go ,  AOKI, Keiichiro

    IPC分类号： F02D45/00 ,  F02D41/14 ,  G01N27/41 ,  G01N27/406 ,  G01N27/419

    CPC分类号： F02D41/1454 ,  F02D41/1401 ,  F02D41/1441 ,  F02D41/1456 ,  G01N27/4065 ,  G01N27/419

    摘要： This control device for an internal combustion engine is equipped with: an air/fuel ratio sensor provided to the exhaust passage of an internal combustion engine; and an engine control device that controls the internal combustion engine according to the output of the air/fuel ratio sensor. The air/fuel ratio sensor is equipped with: a gas chamber to be measured, into which exhaust gas flows; a pump cell that pumps oxygen into or out of the gas chamber to be measured according to the pump current; and a reference cell of which the reference cell output current detected varies according to the air/fuel ratio inside the gas chamber to be measured. The reference cell is equipped with: a first electrode that is exposed to the exhaust gas in the gas chamber to be measured; a second electrode exposed to a reference atmosphere; and a solid electrolyte layer arranged between the electrodes. The air/fuel ratio sensor is equipped with: a reference cell voltage applying device that applies a sensor applied voltage between the electrodes; and a reference cell output current detection device that detects, as the reference cell output current, the current flowing between the electrodes.

    SULFUR OXIDES DETECTION SYSTEM AND METHOD
    10.
    发明授权
    SULFUR OXIDES DETECTION SYSTEM AND METHOD 有权
    硫氧化物检测系统和方法

    公开(公告)号：EP3176573B1

    公开(公告)日：2018-02-14

    申请号：EP16194233.9

    申请日：2016-10-17

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： MATSUDA, Kazuhisa ,  WAKAO, Kazuhiro ,  AOKI, Keiichiro

    IPC分类号： G01N27/407 ,  G01N27/406 ,  G01N27/417 ,  G01N27/419 ,  G01N33/00

    CPC分类号： G01N27/4065 ,  G01M15/104 ,  G01N27/4072 ,  G01N27/4074 ,  G01N27/4076 ,  G01N27/417 ,  G01N27/419 ,  G01N33/0042 ,  Y02A50/248

    摘要： The sulfur oxides detection system 1 comprises: a device part 10 comprising a first electrochemical cell 51 having a first solid electrolyte layer 11, a first electrode 41, and a second electrode 42; and a diffusion regulating layer 16; a power supply 61 supplying voltage between the electrodes; a detector 62 detecting a first current correlation parameter; and a control part 80 controlling the power supply and acquiring the first current correlation parameter. The control part 80 controls the power supply so that a first voltage is applied between the electrodes and calculates a concentration of sulfur oxides in the measured gas based on the first current correlation parameter detected by the detector when the first voltage is applied between the electrodes, but it does not calculate the concentration of sulfur oxides in the measured gas when it judges that a concentration of water in the measured gas is not stable.