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    GAS SENSOR
    1.
    发明申请
    GAS SENSOR 审中-公开

    公开(公告)号：US20200256270A1

    公开(公告)日：2020-08-13

    申请号：US16860361

    申请日：2020-04-28

    Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Toru TAKEUCHI ,  Tomotaka MORI ,  Shota IMADA ,  Yoshiharu MIYAKE ,  Hiroki NISHIJIMA ,  Haruki KONDO ,  Yasushi HIRATA

    IPC: F02D41/14 ,  G01N27/407

    Abstract: A gas sensor includes a sensor element body having a porous layer provided on an outer surface, and a power supply device which supplies power to a heater element that is in the sensor element body. The amount of power being applied to the heater element by the power supply device when gas detection is being performed by the gas sensor in a steady state is designated as P [W], the volume of the length range of a heating region of the heater element provided in the sensor element body as V [mm3], and the applied power density as X [W/mm3], where X is a value expressed by P/V. In that case, the following relationship is satisfied between the applied power density X and the average thickness Y [μm] of the porous layer: Y≥509.32−2884.89X+5014.12X2

    GAS SENSOR ELEMENT
    3.
    发明申请
    GAS SENSOR ELEMENT 审中-公开

    公开(公告)号：US20180017514A1

    公开(公告)日：2018-01-18

    申请号：US15545864

    申请日：2016-02-12

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION

    Inventor： Tetsuya KATO ,  Satoshi NAKAMURA ,  Hiroki NISHIJIMA ,  Makoto ITO

    IPC: G01N27/12 ,  G01N27/41 ,  G01M15/10 ,  G01N27/407 ,  G01N33/497 ,  G01N33/00

    CPC classification number: G01N27/125 ,  G01M15/104 ,  G01N27/4067 ,  G01N27/4072 ,  G01N27/4077 ,  G01N27/41 ,  G01N33/0036 ,  G01N33/0047 ,  G01N33/497

    Abstract: A gas sensor element with suppressed response deterioration even when poisoned with S when fuel or exhaust gas contains ethanol and the ethanol content is high. The element includes a detection portion, which includes a solid electrolyte layer having a pair of electrodes on opposite sides thereof, a shielding layer defining a measurement target gas space with a porous diffusive resistance layer, and a reference gas space protective layer; a heat-generating portion stacked on the detection portion; and a porous protective layer surrounding the detection portion and heat-generating portion. The porous protective layer includes a first porous protective layer surrounding at least the porous diffusive resistance layer, and a second porous protective layer surrounding the first porous protective layer, the detection portion and the heat-generating portion. The first porous protective layer contains none of La, Ca, or Mg, while the second porous protective layer contains at least one of them.

    GAS SENSOR
    4.
    发明申请
    GAS SENSOR 有权

    公开(公告)号：US20210270200A9

    公开(公告)日：2021-09-02

    申请号：US16860361

    申请日：2020-04-28

    Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Toru TAKEUCHI ,  Tomotaka MORI ,  Shota IMADA ,  Yoshiharu MIYAKE ,  Hiroki NISHIJIMA ,  Haruki KONDO ,  Yasushi HIRATA

    IPC: F02D41/14 ,  G01N27/407

    Abstract: A gas sensor includes a sensor element body having a porous layer provided on an outer surface, and a power supply device which supplies power to a heater element that is in the sensor element body. The amount of power being applied to the heater element by the power supply device when gas detection is being performed by the gas sensor in a steady state is designated as P [W], the volume of the length range of a heating region of the heater element provided in the sensor element body as V [mm3], and the applied power density as X [W/mm3], where X is a value expressed by P/V. In that case, the following relationship is satisfied between the applied power density X and the average thickness Y [μm] of the porous layer: Y≥509.32−2884.89X+5014.12X2

    GAS SENSOR ELEMENT
    5.
    发明申请
    GAS SENSOR ELEMENT 有权
    气体传感器元件

    公开(公告)号：US20160018357A1

    公开(公告)日：2016-01-21

    申请号：US14793211

    申请日：2015-07-07

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION

    Inventor： Hiroki NISHIJIMA ,  Yoshiharu MIYAKE ,  Haruki KONDO ,  Makoto NAKAE ,  Tooru TAKEUCHI ,  Masayuki TAMURA ,  Atsushi MURAI

    IPC: G01N27/406 ,  G01N27/409 ,  G01N27/407

    CPC classification number: G01N27/4067 ,  G01N27/4071 ,  G01N27/4077 ,  G01N27/409

    Abstract: A gas sensor element having a porous protective layer with excellent water repellency. Provided is a gas sensor element having a detection portion, which has a stack of a solid electrolyte body having a pair of electrodes on opposite sides thereof and a heat generating body including a heat generating source, and a porous protective layer formed around the detection portion. The porous protective layer has thermal conductivity λ in the range of 0.2 to 5 W/mK, and has λCpp, which is the product of the thermal conductivity λ(W/mK), density ρ(g/m3), and specific heat Cp(J/gK), in the range of 5.3×105 to 2.1×107 WJ/m4K2.

    Abstract translation: 具有防水性优异的多孔保护层的气体传感器元件。 本发明提供一种具有检测部分的气体传感器元件，该检测部分具有在其相对侧上具有一对电极的固体电解质体的堆叠和包括发热源的发热体，以及形成在检测部分周围的多孔保护层 。 多孔保护层的热导率λ在0.2〜5W / mK的范围内，λCpp为导热系数λ（W / mK），密度（g / m3），比热 Cp（J / gK）在5.3×105〜2.1×107WJ / m4K2的范围内。

    MALFUNCTION DIAGNOSIS DEVICE FOR EXHAUST GAS PURIFICATION DEVICE OF INTERNAL COMBUSTION ENGINE
    8.
    发明申请
    MALFUNCTION DIAGNOSIS DEVICE FOR EXHAUST GAS PURIFICATION DEVICE OF INTERNAL COMBUSTION ENGINE 有权
    用于内燃机排气净化装置的故障诊断装置

    公开(公告)号：US20160258334A1

    公开(公告)日：2016-09-08

    申请号：US15057515

    申请日：2016-03-01

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Keiichiro AOKI ,  Toyoharu KANEKO ,  Hiroki NISHIJIMA

    IPC: F01N11/00 ,  F01N3/20

    CPC classification number: F01N11/007 ,  F01N3/2066 ,  F01N2550/02 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2900/1621 ,  Y02T10/24 ,  Y02T10/47

    Abstract: The invention relates to a malfunction diagnosis device for an exhaust gas purification catalyst of an engine. The device calculates, on the basis of a parameter of the engine other than an output value of a NOx concentration sensor, (a) an estimated NO concentration of the exhaust gas and expected to flow out from the catalyst and (b) an estimated particular component concentration of the exhaust gas and expected to flow out from the catalyst. The device calculates an expected output value such that the expected output value calculated when the influence parameter value is a first value is smaller than the expected output value calculated when the influence parameter value is a second value, the expected output value being an output value which is expected to be output from the sensor when the exhaust gas, which includes NO having the expected NO concentration and the particular component having the expected particular component concentration, reaches the sensor. The device diagnoses that a malfunction occurs in the catalyst when the output value of the sensor is equal to or larger than a malfunction diagnosis threshold defined on the basis of the expected output value.

    Abstract translation: 本发明涉及一种用于发动机的排气净化催化剂的故障诊断装置。 该装置基于除NOx浓度传感器的输出值以外的发动机的参数来计算（a）排气的估计的NO浓度并预期从催化剂流出，以及（b）估计的特定 排气的组分浓度并预期从催化剂流出。 该装置计算期望输出值，使得当影响参数值为第一值时计算的预期输出值小于当影响参数值为第二值时计算的预期输出值，期望输出值为输出值， 当包括具有预期的NO浓度的NO和具有预期的特定成分浓度的特定成分的废气到达传感器时，期望从传感器输出。 当传感器的输出值等于或大于基于​​预期输出值定义的故障诊断阈值时，该装置诊断催化剂中发生故障。

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