公开(公告)号：US11946897B2

公开(公告)日：2024-04-02

申请号：US15766485

申请日：2016-09-28

申请人： DENSO CORPORATION

发明人： Yoshihide Segawa ,  Junta Zushi

IPC分类号： G01N27/407 ,  G01N27/409 ,  G01N27/41

CPC分类号： G01N27/41 ,  G01N27/4073 ,  G01N27/4075 ,  G01N27/4076 ,  G01N27/4077 ,  G01N27/409

摘要： A gas sensor is provided which has improved responsiveness and is capable of improving accuracy in measurement of an imbalance between cylinders. The gas sensor includes a solid electrolyte having oxygen ion conductivity, a measurement electrode mounted on one principal surface of the solid electrolyte and is exposed to measurement gas, and a reference electrode mounted on the other principal surface of the solid electrolyte and exposed to reference gas A. Interface capacitance between crystal particles constituting the solid electrolyte is not more than 150 μF. Interface resistance between the crystal particles constituting the solid electrolyte and each of the measurement electrode and the reference electrode is not more than 80 Ω. The measurement electrode has a film thickness t1 of 2 to 8 μm.

公开(公告)号：US10365243B2

公开(公告)日：2019-07-30

申请号：US15886052

申请日：2018-02-01

申请人： DENSO CORPORATION

发明人： Yasutaka Kamiya ,  Yoshihide Segawa ,  Hirokazu Yamada

IPC分类号： G01N27/407 ,  G01N27/403 ,  F01N13/00 ,  G01M15/10 ,  G01N27/406 ,  G01N27/41 ,  G01N33/00 ,  G01N27/409

摘要： A gas sensor is provided with a sensor element having a detecting portion; an insulator supporting the sensor element in a state where the detecting portion is protruded therefrom, the sensor element being inserted through the insulator; a housing supporting the insulator; an inner cover covering the detecting portion; and an outer cover covering the inner cover.An inner flange portion of the inner cover and an outer flange portion of the outer cover are supported between the insulator and the housing. A protrusion is formed on a corner portion facing the insulator, the protrusion contacting with the insulator. An end face of the outer flange portion is positioned radially closer to an outer side with respect to a radial direction, than a position of an end face of the inner flange portion.