公开(公告)号：US10041903B2

公开(公告)日：2018-08-07

申请号：US15092092

申请日：2016-04-06

Applicant: NGK Spark Plug Co., LTD.

Inventor： Masaki Mizutani ,  Nobuo Furuta

IPC: G01N27/407

Abstract: In a cross section of the gas sensor element which is perpendicular to its lengthwise direction and through which all first to fourth lead portions penetrate, when the cross section is bisected into two regions with respect to the width direction of the gas sensor element, the first lead portion and the fourth lead portion are disposed in one of the regions and the second lead portion and the third lead portion are disposed in the other region, and the second lead portion and the third lead portion are disposed so as to be spaced apart from each other in the width direction with no overlap as viewed in a stacking direction.

公开(公告)号：US09976979B2

公开(公告)日：2018-05-22

申请号：US14862209

申请日：2015-09-23

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Satoshi Okazaki ,  Akinori Kojima ,  Masaki Mizutani ,  Nobuo Furuta ,  Ai Igarashi

IPC: G01N27/407 ,  B05D3/06 ,  B05D3/00 ,  B05D3/02

CPC classification number: G01N27/4073

Abstract: A gas sensor element (10) includes a first composite ceramic layer (111) having a plate-shaped first surrounding portion (112) formed of an insulating ceramic and including a through hole inner-perimetric-surface (115) which defines a through hole (112h), and a plate-shaped first electrolyte portion (121) formed of a solid electrolyte ceramic, disposed in the through hole (112h), and including an electrolyte outer-perimetric-surface (125) in contact with the through hole inner-perimetric-surface (115). The electrolyte outer-perimetric-surface (125) of the first electrolyte portion (121) is sloped toward an exterior of the first electrolyte portion (121) as it approaches one side DT1. The through hole inner-perimetric-surface (115) and the electrolyte outer-perimetric-surface 125 are in close contact with each other along their entire perimeters.

公开(公告)号：US09829462B2

公开(公告)日：2017-11-28

申请号：US14833634

申请日：2015-08-24

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Syun Sakuma ,  Masaki Onkawa ,  Yuta Oishi ,  Nobuo Furuta ,  Masaki Mizutani

IPC: G01N27/407

CPC classification number: G01N27/4071

Abstract: A gas sensor element includes a laminate formed of a detecting element section and a heater section, and a porous protection layer covering a forward end portion of the laminate. The detecting element section has one or more cells having a solid electrolyte body and a pair of electrodes. The heater section has a heater. Side surfaces of the solid electrolyte bodies in parallel with the direction of lamination are covered with dense insulating members. The cell-to-be-controlled is temperature controlled by the heater to 600° C. to 830° C. The porous protection layer is formed on the laminate from a forward end portion to a region which has a temperature of 500° C. or higher when the temperature control is performed, and the porous protection layer is not formed in a region which has a temperature of 300° C. or lower when the temperature control is performed.