公开(公告)号：US20180217089A1

公开(公告)日：2018-08-02

申请号：US15886052

申请日：2018-02-01

Applicant: DENSO CORPORATION

Inventor： Yasutaka KAMIYA ,  Yoshihide SEGAWA ,  Hirokazu YAMADA

IPC: G01N27/407 ,  F01N13/00 ,  G01N33/00 ,  G01M15/10 ,  G01N27/406 ,  G01N27/41

CPC classification number: G01N27/4078 ,  F01N13/008 ,  F01N2560/025 ,  G01M15/104 ,  G01N27/4067 ,  G01N27/4071 ,  G01N27/409 ,  G01N27/41 ,  G01N33/0037 ,  Y02A50/245

Abstract: 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.

公开(公告)号：US20180217090A1

公开(公告)日：2018-08-02

申请号：US15886063

申请日：2018-02-01

Applicant: DENSO CORPORATION

Inventor： Yasutaka KAMIYA ,  Yoshihide SEGAWA ,  Hirokazu YAMADA

IPC: G01N27/407 ,  F01N13/00 ,  G01M15/10 ,  G01N33/00 ,  G01N27/406 ,  G01N27/41

CPC classification number: G01N27/4078 ,  F01N13/008 ,  F01N2560/02 ,  F01N2560/025 ,  G01M15/104 ,  G01N27/4067 ,  G01N27/4071 ,  G01N27/41 ,  G01N33/0037 ,  Y02A50/245

Abstract: A gas sensor includes a sensor element having a detecting portion; an insulator supporting the sensor element inserted therethrough; 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 the outer flange portion of the outer cover are supported between the insulator and the housing. An end face of the inner flange portion is positioned towards outer side R1 with respect to the radial direction R than the position of an end face of the outer flange portion. A corner portion between the end face and a surface in the outer flange portion protrudes into a surface of the inner flange portion.

公开(公告)号：US20200057018A1

公开(公告)日：2020-02-20

申请号：US16663516

申请日：2019-10-25

Applicant: DENSO CORPORATION

Inventor： Yasutaka KAMIYA ,  Tatsuki UJIYAMA

IPC: G01N27/407

Abstract: A gas sensor includes a gas sensor element for detecting a specific gas concentration in measured gas. The gas sensor element includes a solid electrolyte, a measured gas side electrode into which measured gas is introduced through a porous diffusion resistance layer, a reference gas side electrode facing a reference gas chamber, and a diffusion space portion between the porous diffusion resistance layer and the measured gas side electrode. The porous diffusion resistance layer has a measured gas inlet opened to an element outer surface and a measured gas outlet opened to the diffusion space portion. A relationship between a distance between the inlet and the outlet and a distance between the outlet and the measured gas side electrode is expressed by 0