公开(公告)号：US20240125264A1

公开(公告)日：2024-04-18

申请号：US18449090

申请日：2023-08-14

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION

Inventor： Kazuhiro WAKAO ,  Mie KATO ,  Daisuke KAWAI

IPC: F01N13/00

CPC classification number: F01N13/008 ,  F01N2560/20

Abstract: The control device of an exhaust sensor includes a processor. The processor is configured to control supply of power to the heater. The processor is configured to start the supply of power to the heater at a predetermined timing before a starter for cranking the internal combustion engine is turned on and increase power supplied to the heater when the starter is turned on.

公开(公告)号：US20190391109A1

公开(公告)日：2019-12-26

申请号：US16451285

申请日：2019-06-25

Applicant: DENSO CORPORATION

Inventor： Shota HAGINO ,  Masatoshi IKEDA ,  Makoto ITO ,  Zhenzhou SU ,  Hao WU ,  Takashi HIRAYAMA ,  Daisuke KAWAI ,  Satoshi NAKAMURA

IPC: G01N27/407 ,  G01N27/409

Abstract: A gas sensor is equipped with a sensor device made of a stack of a solid electrolyte body, a sensor electrode, a reference electrode, a first insulator, a second insulator, a gas chamber, a reference gas duct, a heater, and a heat transfer member. The heater has a heating element at least partially overlapping the sensor electrode and the reference electrode. The heat transfer member is made of a dense metallic oxide material which blocks passage of measurement gas therethrough. The heat transfer member is held between the sensor electrode and the first insulator in which the heater is embedded within the gas chamber and works to facilitate transfer of thermal energy, as generated by the heater, to the solid electrolyte body, the sensor electrode, and the reference electrode. This results in enhanced thermal conductivity of the sensor device and achieves quick activation of the sensor device.

公开(公告)号：US20210181140A1

公开(公告)日：2021-06-17

申请号：US17181212

申请日：2021-02-22

Applicant: DENSO CORPORATION

Inventor： Masatoshi IKEDA ,  Shota HAGINO ,  Makoto ITO ,  Daisuke KAWAI

IPC: G01N27/406 ,  G01N27/407 ,  G01N27/409 ,  H05B3/03 ,  H05B3/18

Abstract: A gas sensor element has an electrolyte layer, a first insulator, a second insulator, a measurement gas chamber, and a reference gas chamber. The electrolyte layer includes a holding plate and a solid electrolyte body. The first insulator is laminated on one side of the electrolyte layer, and the second insulator is laminated on the other side of the electrolyte layer. At least a part of the boundary portion between the placement hole and the solid electrolyte body is sandwiched between a first sandwiching portion of the first insulator and a second sandwiching portion of the second insulator.

公开(公告)号：US20200064303A1

公开(公告)日：2020-02-27

申请号：US16547966

申请日：2019-08-22

Applicant: DENSO CORPORATION

Inventor： Masatoshi IKEDA ,  Shota HAGINO ,  Makoto ITO ,  Daisuke KAWAI

IPC: G01N27/407

Abstract: In a gas sensor element, an electrolyte layer has a solid electrolyte body having oxygen ionic conductivity. A first insulation body is stacked at a first surface side of the electrolyte layer. A second insulation body is stacked at a second surface side of the electrolyte layer. A measurement gas chamber is surrounded by the electrolyte layer and the first insulation body, into which a detection target gas is introduced. A reference gas chamber is surrounded by the electrolyte layer and the second insulation body, into which a reference gas is introduced. A heater is embedded in the first insulation body. The second insulation body has a low thermal conductivity part having a thermal conductivity which is lower than a thermal conductivity of a heater embedded part formed in the first insulation body in which the heater is embedded.