公开(公告)号：US20180031515A1

公开(公告)日：2018-02-01

申请号：US15729765

申请日：2017-10-11

Applicant: Delphi Technologies, Inc.

Inventor： Da Yu Wang ,  David M. Racine ,  Sheng Yao

IPC: G01N27/407

CPC classification number: G01N27/4075 ,  G01N27/4076

Abstract: An electrochemical NO2 sensor includes a reference electrode, a sensing electrode having a sensing electrode material, and an electrolyte. The electrolyte is disposed between and in ionic communication with the sensing electrode and the reference electrode to form an NO2 sensing cell. The NO2 sensing cell produces an electromotive force when exposed to NO2. The sensing electrode material comprises a compound consisting essentially of Si and oxygen and expressed by ABD. Oxygen is element D, Si is element B, and element A includes one or more elements selected from the group consisting of Mn, Co, and Fe.

公开(公告)号：US09823216B2

公开(公告)日：2017-11-21

申请号：US14565896

申请日：2014-12-10

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： Da Yu Wang ,  David M. Racine ,  Sheng Yao

IPC: G01N27/407

CPC classification number: G01N27/4075 ,  G01N27/4076

Abstract: An NO2 sensor comprises a sensing electrode material that includes a compound consisting essentially of one or more elements selected from the group consisting of Mn, Co, and Fe; an element selected from the group consisting of Si and Ti; and oxygen. In an alternate embodiment, the sensing electrode material includes a compound consisting essentially of one or more elements selected from the group consisting of Mn, Co, and Fe; an element selected from the group consisting of Si and Ti; an element selected from the group consisting of Mg, Al, Li, Na, and K; and oxygen. Sensors made with these sensing electrode materials demonstrate good NO2 sensitivity and reduced sensitivity to cross-interference from NO and NH3.

公开(公告)号：US09816960B2

公开(公告)日：2017-11-14

申请号：US14298156

申请日：2014-06-06

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： Kathryn M. McCauley ,  Charles Scott Nelson ,  David M. Racine

IPC: G01N27/407 ,  B23K11/00

CPC classification number: G01N27/4078 ,  B23K11/002 ,  Y10T29/49119 ,  Y10T29/49828

Abstract: A gas sensor includes a metallic shell extending along a shell axis and defining a shell attaching surface that is substantially perpendicular to the shell axis; a metallic shield extending along a shield axis and defining a shield attaching surface that is substantially perpendicular to the shield axis; and a ceramic sensing element extending along a sensing element axis, the sensing element being rigidly fixed at a first axial location of the sensing element to the shell and the sensing element being laterally supported by the shield at a second axial location of the sensing element that is axially spaced apart from the first axial location. The shield is attached to the shell at an interface formed between the shield attaching surface and the shell attaching surface, thereby accommodating misalignment between the shield axis and the shell axis. A method of making the gas sensor is also provided.

公开(公告)号：US09778219B2

公开(公告)日：2017-10-03

申请号：US14091498

申请日：2013-11-27

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： Da Yu Wang ,  David M. Racine ,  Sheng Yao

IPC: G01N27/30 ,  G01N27/416 ,  G01M15/10

CPC classification number: G01N27/301 ,  G01M15/102 ,  G01N27/4162

Abstract: An electrochemical detection system for determining a concentration of a gas in exhaust gases of a combustion process. The system includes an electrolyte, a reference electrode, and a sense electrode that cooperate to form an electrochemical sensor that exposes both the reference electrode and the sense electrode to the exhaust gases. The electrochemical sensor is configured to output a sensor signal indicative of a species concentration of a species gas in the exhaust gases. The sensor signal exhibits a transient error in response to a change in a reference concentration of a reference gas in the exhaust gases. The processor is configured to determine the species concentration based on the sensor signal, and to determine an estimate of the transient error based on an operating condition of the combustion process.

公开(公告)号：US09863907B1

公开(公告)日：2018-01-09

申请号：US15690547

申请日：2017-08-30

Applicant: Delphi Technologies, Inc.

Inventor： Da Yu Wang ,  David M. Racine ,  Sheng Yao

IPC: G01N27/30 ,  G01N27/416 ,  G01M15/10

CPC classification number: G01N27/301 ,  G01M15/102 ,  G01N27/4162

Abstract: An electrochemical detection system for determining a concentration of a gas in exhaust gases of a combustion process. The system includes an electrolyte, a reference electrode, and a sense electrode that cooperate to form an electrochemical sensor that exposes both the reference electrode and the sense electrode to the exhaust gases. The electrochemical sensor is configured to output a sensor signal indicative of a species concentration of a species gas in the exhaust gases. The sensor signal exhibits a transient error in response to a change in a reference concentration of a reference gas in the exhaust gases. The processor is configured to determine the species concentration based on the sensor signal, and to determine an estimate of the transient error based on an operating condition of the combustion process.

公开(公告)号：US20170356873A1

公开(公告)日：2017-12-14

申请号：US15181582

申请日：2016-06-14

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： Da Yu Wang ,  David M. Racine ,  Sheng Yao

IPC: G01N27/407

CPC classification number: G01N27/4075 ,  F01N2560/026 ,  G01N27/4071 ,  G01N27/4074 ,  G01N33/0037 ,  Y02A50/245

Abstract: A NO2 gas sensing element includes an electrolyte, a reference electrode in contact with the electrolyte, and a sensing electrode selective to NO2 in contact with the electrolyte spaced apart from the reference electrode. The NO2 selective sensing electrode includes an oxide material comprising: (1) a mixed oxide according to the formula (Mn2-u-v-wCovMgwSiO4-u)+ξ(Mn3Al2Si3O12)+δ(SiO2), wherein 0≦(u+v+w)≦2.0, 0≦ξ≦0.5, and 0≦δ≦0.1; (2) a mixed oxide according to the formula (Mn2-x-y-zCoyMgzSiO4-x)+ξ(ZnO)+δ(SiO2), wherein 0≦(u+v+w)≦2.0, 0≦ξ≦0.5, and 0≦δ≦0.1; or combinations of mixed oxides (1) and (2).

公开(公告)号：US20170363562A1

公开(公告)日：2017-12-21

申请号：US15690547

申请日：2017-08-30

Applicant: Delphi Technologies, Inc.

Inventor： Da Yu Wang ,  David M. Racine ,  Sheng Yao

IPC: G01N27/30 ,  G01N27/416 ,  G01M15/10

CPC classification number: G01N27/301 ,  G01M15/102 ,  G01N27/4162

Abstract: An electrochemical detection system for determining a concentration of a gas in exhaust gases of a combustion process. The system includes an electrolyte, a reference electrode, and a sense electrode that cooperate to form an electrochemical sensor that exposes both the reference electrode and the sense electrode to the exhaust gases. The electrochemical sensor is configured to output a sensor signal indicative of a species concentration of a species gas in the exhaust gases. The sensor signal exhibits a transient error in response to a change in a reference concentration of a reference gas in the exhaust gases. The processor is configured to determine the species concentration based on the sensor signal, and to determine an estimate of the transient error based on an operating condition of the combustion process.