公开(公告)号：US20210381945A1

公开(公告)日：2021-12-09

申请号：US17407284

申请日：2021-08-20

Applicant: DENSO CORPORATION

Inventor： Yuto TAMEI ,  Koichi YOSHIDA ,  Takehito KIMATA

IPC: G01N15/06 ,  G01M15/10

Abstract: A sensor device includes a housing that has a sensor element inserted therein and holds the sensor element such that a detection unit is positioned at the tip end thereof in the axial direction, and an element cover disposed coaxially with the tip end. A tip surface of the outer cover has a plurality of outer tip surface holes provided outward from positions opposing the outer periphery of an inner tip surface hole. The tip surface of the outer cover includes a central portion which protrudes towards the inner tip surface hole, an outer peripheral portion in which the outer tip surface holes are formed and which is positioned farther toward the tip end than is the central portion, and an inclined surface connects the central portion to the outer tip surface holes.

公开(公告)号：US20210310972A1

公开(公告)日：2021-10-07

申请号：US17265494

申请日：2019-08-09

Applicant: IBIDEN CO., LTD. ,  DENSO CORPORATION

Inventor： Yasutaka ITO ,  Tomoyoshi NAKAMURA ,  Takeshi USHIDA ,  Takehito KIMATA ,  Masahiro YAMAMOTO

IPC: G01N27/16 ,  G01N15/10

Abstract: A particulate-matter detecting sensor including an insulating substrate which has a detecting face, a plurality of detecting conductors formed in the insulating substrate, and a heating section embedded in the insulating substrate. Each of the plurality of detecting conductors includes a detecting electrode part, a terminal part, and a connecting part. An exposed conductor part of the detecting conductor which is exposed to the element surface is constituted of a noble metal conductor mainly formed of at least one noble metal selected from Pt, Au, Pd, Rh and Ir. At least a portion of a non-exposed conductor part of the detecting conductor which is not exposed to the element surface is constituted of a low expansion conductor mainly formed of a low expansion coefficient metal which linear expansion coefficient is lower than that of the noble metal.

公开(公告)号：US20210199611A1

公开(公告)日：2021-07-01

申请号：US17265495

申请日：2019-08-09

Applicant: IBIDEN CO., LTD. ,  DENSO CORPORATION

Inventor： Yasutaka ITO ,  Tomoyoshi NAKAMURA ,  Takeshi USHIDA ,  Takehito KIMATA ,  Masahiro YAMAMOTO

IPC: G01N27/16 ,  G01N15/06

Abstract: A particulate-matter detecting sensor including an insulating substrate which has a detecting face, detecting conductors formed in the insulating substrate, and a heating section formed on the insulating substrate. Each detecting conductor includes a detecting electrode part, a terminal part, and a connecting part. A portion of the detecting conductor is constituted of a noble metal conductor mainly formed of at least one noble metal selected from Pt, Au, Pd, Rh and Ir. At least a portion of the connecting part is formed of a low expansion conductor mainly formed of a low expansion coefficient metal having linear expansion coefficient lower than that of the noble metal. Both conductors are joined at an overlapping part at which the noble metal conductor and the low expansion conductor are partly overlapped with each other on an insulating layer forming the insulating substrate in a normal line direction of the insulating layer.

公开(公告)号：US20200292421A1

公开(公告)日：2020-09-17

申请号：US16885636

申请日：2020-05-28

Applicant: DENSO CORPORATION

Inventor： Yuto TAMEI ,  Hirofumi NODA ,  Takehito KIMATA ,  Takashi ARAKI

IPC: G01N1/22 ,  G01N27/04 ,  G01N15/06 ,  G01D11/24 ,  G01N27/407

Abstract: A sensor device is equipped with a housing having an element cover retaining a sensor element such that a detection section of the sensor element is positioned at the tip end of the sensor element. The element cover includes an inner cover provided with inner side holes and an inner tip face hole respectively provided therein, and an outer cover provided with outer side holes in a side thereof, with the tip position of the outer side holes located closer to the tip end than is the tip position of the inner cover. Between the outer surface of the inner cover and the inner surface of the outer cover there is a large clearance section at the tip end and a small clearance section at the base end, providing a flow path that is shaped for connecting the large clearance section and the small clearance section without a step.

公开(公告)号：US20180266936A1

公开(公告)日：2018-09-20

申请号：US15759947

申请日：2016-09-14

Applicant: DENSO CORPORATION

Inventor： Masahiro YAMAMOTO ,  Masayuki TAMURA ,  Go MIYAGAWA ,  Toru KATAFUCHI ,  Takehito KIMATA ,  Yuto TAMEI

IPC: G01N15/10 ,  G01N27/04

CPC classification number: G01N15/1031 ,  G01N15/0606 ,  G01N15/0656 ,  G01N27/045 ,  G01N2015/0046

Abstract: A sensor element which has a pair of positive and negative detection electrodes disposed on a surface of an insulation body as a detecting portion and a cover body configured to cover an opening of a cylindrical housing. The cover body is provided with gas inlet and outlet holes via which the measuring gas is introduced and discharged. The pair of detection electrodes have a plurality of wire electrodes. The wire electrodes electrically connected to the positive electrode and the wire electrodes electrically connected to the negative electrode are alternately arranged in parallel. Any one of a first insulation layer which is a narrow electrode interval Dn and a second insulation layer which is a wide electrode interval Dw, arranged between adjacent wire electrodes, and the first insulation layer arranged in a center part of the detecting portion.