公开(公告)号：US11714062B2

公开(公告)日：2023-08-01

申请号：US16786082

申请日：2020-02-10

Applicant: DENSO CORPORATION

Inventor： Tomotaka Mouri ,  Shota Imada ,  Toru Takeuchi

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

CPC classification number: G01N27/4077 ,  G01N27/409 ,  G01N27/4067 ,  G01N27/4072

Abstract: A gas sensor element for detecting a specific gas component in a measured gas, comprising: an element body in the form of a long plate having a gas detection part at an end thereof on a distal end face side in a longitudinal direction; and a porous protective layer covering an outer periphery of the end on said end face side of the element body, wherein in a cross section including two adjacent ones of the end face and side faces connected to the end face, an outer surface of the protective layer facing an element corner where the two faces meet has a shape with a corner part, and a ratio of an assumed diameter of a water droplet contained in the measured gas in a use environment to an effective length of the corner part in the cross section is equal to or larger than 1.5.

公开(公告)号：US11555463B2

公开(公告)日：2023-01-17

申请号：US16786135

申请日：2020-02-10

Applicant: DENSO CORPORATION

Inventor： Shota Imada ,  Tomotaka Mouri ,  Toru Takeuchi

IPC: G01N33/00 ,  G01N27/407 ,  F02D41/14

Abstract: A gas sensor element comprising a long plate-like element body and a porous protective layer protecting a surface of the element body, wherein the element body has a gas detection part at an end thereof on one end face side in a longitudinal direction, and the protective layer includes an end face part covering the one end face in laminate, side face parts covering side faces connected to the one end face in laminate, and corner parts where two adjacent ones of the end face part and the side face parts meet. An outer surface of one or more of the end face part and the side face parts has a concave shape that is smoothly continuous with the corner parts and configured such that a layer thickness increases toward the corner parts.