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    GAS SENSOR ELEMENT, AND GAS SENSOR
    1.
    发明申请
    GAS SENSOR ELEMENT, AND GAS SENSOR 有权
    气体传感器元件和气体传感器

    公开(公告)号：US20140291150A1

    公开(公告)日：2014-10-02

    申请号：US14355457

    申请日：2012-11-20

    Applicant: NGK SPARK PLUG CO. LTD.

    Inventor： Shigehiro Otsuka ,  Masaki Onkawa ,  Toru Iwano ,  Satoshi Teramoto ,  Kuniharu Tanaka ,  Takeshi Mitsuoka

    IPC: G01N27/407

    CPC classification number: G01N27/4077 ,  G01N27/4118

    Abstract: A gas sensor element (100) including a detection portion (150) including a solid electrolyte body (105) and a pair of electrodes (104) and (106) disposed on the solid electrolyte body; and a porous protection layer (20) covering the detection portion. The porous protection layer includes an inner porous layer (21) and an outer porous layer (23); the inner porous layer is higher in porosity than the outer porous layer; the inner porous layer contains, as main components, ceramic particles (21a), and ceramic fiber filaments (21b) which are mainly formed of a ceramic material and which have a mean fiber length of 70 to 200 μm; and the amount of the ceramic fiber filaments is 25 to 75 vol % on the basis of the total amount of the ceramic particles and the ceramic fiber filaments, the total amount being taken as 100 vol %.

    Abstract translation: 一种气体传感器元件（100），包括：检测部（150），其包括固体电解质体（105）和设置在所述固体电解质体上的一对电极（104）和（106） 以及覆盖所述检测部的多孔保护层（20）。 多孔保护层包括内部多孔层（21）和外部多孔层（23）; 内多孔层的孔隙率高于外多孔层; 内部多孔层含有主要由陶瓷材料形成且平均纤维长度为70〜200μm的陶瓷粒子（21a）和陶瓷纤维丝（21b）， 以陶瓷粒子和陶瓷纤维丝的总量计，陶瓷纤维长丝的量为25〜75体积％，总量为100体积％。

    Gas sensor element and gas sensor
    2.
    发明授权
    Gas sensor element and gas sensor 有权
    气体传感器元件和气体传感器

    公开(公告)号：US09291525B2

    公开(公告)日：2016-03-22

    申请号：US13907230

    申请日：2013-05-31

    Applicant: NGK SPARK PLUG CO., LTD.

    Inventor： Shigehiro Otsuka ,  Masaki Onkawa ,  Toru Iwano ,  Satoshi Teramoto ,  Kuniharu Tanaka ,  Takeshi Mitsuoka

    IPC: G01N27/407 ,  G01M15/10

    CPC classification number: G01M15/102 ,  G01N27/4077

    Abstract: A gas sensor element and a gas sensor incorporating the gas sensor element. The gas sensor element (100) includes a detection portion (150) including a solid electrolyte body (105) and a pair of electrodes (104) and (106) disposed on the solid electrolyte body; and a porous protection layer (20) covering the detection portion. The porous protection layer includes an inner porous layer (21) and an outer porous layer (23). The inner porous layer has a higher porosity than the outer porous layer. Further, the inner porous layer contains, as main components, ceramic particles (21a), and ceramic fiber filaments (21b), and the amount of the ceramic fiber filaments is 25 to 75 vol % based on the total amount of the ceramic particles and the ceramic fiber filaments taken as 100 vol %.

    Abstract translation: 气体传感器元件和结合有气体传感器元件的气体传感器。 气体传感器元件（100）包括：固体电解质体（105）和配置在固体电解质体上的一对电极（104）和（106）的检测部（150） 以及覆盖所述检测部的多孔保护层（20）。 多孔保护层包括内部多孔层（21）和外部多孔层（23）。 内部多孔层的孔隙率高于外层多孔层。 此外，内部多孔层含有陶瓷粒子（21a）和陶瓷纤维丝（21b）作为主要成分，陶瓷纤维丝的量相对于陶瓷粒子的总量为25〜75体积％， 陶瓷纤维长丝为100体积％。

    Gas sensor element, gas sensor, and method of manufacturing gas sensor element
    3.
    发明授权
    Gas sensor element, gas sensor, and method of manufacturing gas sensor element 有权

    公开(公告)号：US09694387B2

    公开(公告)日：2017-07-04

    申请号：US14525794

    申请日：2014-10-28

    Applicant: NGK SPARK PLUG CO., LTD.

    Inventor： Masaki Onkawa ,  Shun Sakuma ,  Toru Iwano ,  Tatsuhiko Muraoka ,  Shigehiro Ohtsuka ,  Masaki Mizutani

    IPC: B05D3/02 ,  G01N27/407

    CPC classification number: B05D3/0254 ,  G01N27/4077 ,  G01N27/4078

    Abstract: A gas sensor element in an air/fuel ratio sensor includes an element body and a protection layer having two layers (a first layer and a second layer). The gas sensor element has at least one separation portion in the form of a space between the first layer and the second layer. The gas sensor element can temporarily accumulate, in the at least one separation portion, water which adheres to the surface of the protection layer and penetrates into the protection layer. Thus, as compared with a protection layer which is identical in thickness to the protection layer, but does not have separation portions, water adhering to the protection layer is less likely to reach the element body. Therefore, there can be restrained breakage of an end of the element body which could otherwise result from thermal shock stemming from adhesion of water.

    Gas sensor element and gas sensor
    4.
    发明授权
    Gas sensor element and gas sensor 有权
    气体传感器元件和气体传感器

    公开(公告)号：US09080964B2

    公开(公告)日：2015-07-14

    申请号：US13665731

    申请日：2012-10-31

    Applicant: NGK SPARK PLUG CO., LTD.

    Inventor： Sigehiro Otsuka ,  Masaki Onkawa ,  Toru Iwano ,  Satoshi Teramoto ,  Kuniharu Tanaka ,  Takeshi Mitsuoka

    IPC: G01N27/407 ,  G01N33/00

    CPC classification number: G01N27/4077 ,  G01N33/0014 ,  G01N33/0037 ,  Y02A50/245

    Abstract: A gas sensor element (100) includes a laminate of a detection element (300) and a heater (200), and a porous protection layer (20) covering a forward end portion thereof. The laminate has a measuring chamber (107c) into which a gas-to-be-measured is introduced via a diffusion resistor (115). The porous protection layer includes an inner porous layer (21), and an outer porous layer (23). The inner porous layer has a higher porosity than the outer porous layer and the diffusion resistor. As viewed in a plurality of 100 μm×100 μm regions a1 to a3 and b1 to b3 on sections of the inner porous layer and the diffusion resistor, respectively, a pore diameter greater than the greatest pore diameter CDIF in the regions of the diffusion resistor exists in each of the regions of the inner porous layer.

    Abstract translation: 气体传感器元件（100）包括检测元件（300）和加热器（200）的层叠体，以及覆盖其前端部的多孔保护层（20）。 层压体具有经由扩散电阻器（115）引入待测气体的测量室（107c）。 多孔保护层包括内多孔层（21）和外多孔层（23）。 内部多孔层具有比外部多孔层和扩散电阻器更高的孔隙率。 从内部多孔层和扩散电阻的各部分的多个100μm×100μm的区域a1〜a3，b1〜b3分别观察到，扩散电阻区域的孔径大于最大孔径CDIF 存在于内部多孔层的每个区域中。

    Gas sensor with porous protection layers
    6.
    发明授权
    Gas sensor with porous protection layers 有权
    气体传感器具有多孔保护层

    公开(公告)号：US09476863B2

    公开(公告)日：2016-10-25

    申请号：US14485438

    申请日：2014-09-12

    Applicant: NGK SPARK PLUG CO., LTD.

    Inventor： Shun Sakuma ,  Masaki Onkawa ,  Toru Iwano ,  Tatsuhiko Muraoka ,  Shigehiro Ohtsuka ,  Masaki Mizutani

    IPC: G01N27/407 ,  G01N33/00 ,  G01M15/10

    CPC classification number: G01N33/0036 ,  G01M15/104 ,  G01N27/4072 ,  G01N27/4077 ,  G01N33/006

    Abstract: A gas sensor element comprises an elongated plate-like element including, at a forward end portion, a detecting section comprising a solid electrolyte body having an outer surface and a back surface, a detection electrode on the outer surface and a reference electrode on the back surface, and a porous layer covering the detection electrode. The coating layer includes a first protection layer entirely covering the detecting section, and a second protection layer circumferentially covering the first protection layer and extending at least from a forward end of the first protection layer to a position located rearward of the porous layer. The thickness of the first protection layer on the porous layer is larger than that of the first protection layer rearward of the porous layer. The thickness of the second protection layer rearward of the porous layer is larger than that of the second protection layer above the porous layer.

    Abstract translation: 一种气体传感器元件包括细长的板状元件，其在前端部分包括检测部分，该检测部分包括具有外表面和后表面的固体电解质体，外表面上的检测电极和背面上的参考电极 表面和覆盖检测电极的多孔层。 涂层包括完全覆盖检测部分的第一保护层，以及周向覆盖第一保护层并且至少从第一保护层的前端延伸到位于多孔层后方的位置的第二保护层。 多孔层上的第一保护层的厚度大于多孔层的后方的第一保护层的厚度。 多孔层后方的第二保护层的厚度大于多孔层上方的第二保护层的厚度。

    Gas sensor element, and gas sensor
    7.
    发明授权
    Gas sensor element, and gas sensor 有权
    气体传感器元件和气体传感器

    公开(公告)号：US09234870B2

    公开(公告)日：2016-01-12

    申请号：US14355457

    申请日：2012-11-20

    Applicant: NGK SPARK PLUG CO. LTD.

    Inventor： Shigehiro Otsuka ,  Masaki Onkawa ,  Toru Iwano ,  Satoshi Teramoto ,  Kuniharu Tanaka ,  Takeshi Mitsuoka

    IPC: G01N27/407 ,  G01N27/411

    CPC classification number: G01N27/4077 ,  G01N27/4118

    Abstract: A gas sensor element (100) including a detection portion (150) including a solid electrolyte body (105) and a pair of electrodes (104) and (106) disposed on the solid electrolyte body; and a porous protection layer (20) covering the detection portion. The porous protection layer includes an inner porous layer (21) and an outer porous layer (23); the inner porous layer is higher in porosity than the outer porous layer; the inner porous layer contains, as main components, ceramic particles (21a), and ceramic fiber filaments (21b) which are mainly formed of a ceramic material and which have a mean fiber length of 70 to 200 μm; and the amount of the ceramic fiber filaments is 25 to 75 vol % on the basis of the total amount of the ceramic particles and the ceramic fiber filaments, the total amount being taken as 100 vol %.

    Abstract translation: 一种气体传感器元件（100），包括：检测部（150），其包括固体电解质体（105）和设置在所述固体电解质体上的一对电极（104）和（106） 以及覆盖所述检测部的多孔保护层（20）。 多孔保护层包括内部多孔层（21）和外部多孔层（23）; 内多孔层的孔隙率高于外多孔层; 内部多孔层含有主要由陶瓷材料形成且平均纤维长度为70〜200μm的陶瓷粒子（21a）和陶瓷纤维丝（21b）， 以陶瓷粒子和陶瓷纤维丝的总量计，陶瓷纤维长丝的量为25〜75体积％，总量为100体积％。

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