Delphi Technologies, Inc.

Delphi Technologies IP Limited

Da Yu Wang

Walter Thomas Symons

Sheng Yao

Paul Casey Kikuchi

Kaius Kiiren Polikarpus

David M Racine

Robert Jerome Farhat

Joachim Kupe

Raymond Leo Bloink

David D Cabush

Kailash Chandra Jain

Eric J Detwiler

David Kay Lambert

Yingjie Lin

Larry Max Oberdier

David K Chen

Carlos Augusto Valdes

Elizabeth Briggs

Charles Robert Harrington

Eric P Clyde

Lone-Wen F Tai

Kenneth M Rahmoeller

William J LaBarge

Michel Farid Sultan

Mark A Shost

John E Kirwan

James Howard Kralick

Han-Sheng Lee

Kenneth David Mowery

David Sturge Eddy

Ming-Cheng Wu

Frederick L Kennard

Joseph G Ralph

Kerry Gross

Alfredo Ibarra Covarrubias

Lora Younkman

Russel H Bosch

Jeffrey T Coha

Thomas M Brunette

Walter J Symons

Sandra H Peschke, Legal Representative

David P Wallace

Lora Thrun

Devesh Srivastava

Yao Sheng

Frederick L Kennard Iii

Ying Jie Lin

Elizabeth Marie Briggs

Sheng Yau

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 NO. 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.

Sensor material and gas sensor element and gas sensor derived therefrom

A sensor system includes a common gas chamber and a reference gas chamber respectively configured to receive an exhaust gas and a reference gas. A Nernst cell is exposed to the common gas chamber and the reference air chamber. The Nernst cell provides a reference signal indicative of an oxygen difference between the common gas chamber and the reference air chamber. An oxygen electrochemical pump cell is exposed to the common gas chamber and exhaust gas and provides an oxygen signal indicative of an oxygen only concentration. A NOx electrochemical cell is exposed to the common gas chamber and provides a NOx signal indicative of a NOx concentration. A processor is in communication with the Nernst cell, the oxygen-only electrochemical pump cell and NOx electrochemical cells. The processor outputs oxygen and NOx signals and provide a NOx concentration and oxygen concentration of the exhaust.

Combination NOx and Oxygen sensor with common gas chamber

A NOgas sensing element includes an electrolyte, a reference electrode in contact with the electrolyte, and a sensing electrode selective to NOin contact with the electrolyte spaced apart from the reference electrode. The NOselective sensing electrode includes an oxide material comprising: (1) a mixed oxide according to the formula (MnCoMgSiO)+&#x3be;(MnAlSiO)+&#x3b4;(SiO), wherein 0&#x2264;(u+v+w)&#x2264;2.0, 0&#x2264;&#x3be;&#x2264;0.5, and 0&#x2264;&#x3b4;&#x2264;0.1; (2) a mixed oxide according to the formula (MnCoMgSiO)+&#x3be;(ZnO)+&#x3b4;(SiO), wherein 0&#x2264;(u+v+w)&#x2264;2.0, 0&#x2264;&#x3be;&#x2264;0.5, and 0&#x2264;&#x3b4;&#x2264;0.1; or combinations of mixed oxides (1) and (2).

[object Object]

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.

Electrochemical detection system and method of operation

An NOsensor 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 NOsensitivity and reduced sensitivity to cross-interference from NO and NH.

A method for fault identification of gas sensors exposed to a gas mixture is disclosed for gas sensors having an output that depends on concentrations of two gas species in the gas mixture. The method includes receiving output signals from two such sensors, processing the output signals in a controller that implements a model of the sensors so as to identify a fault in the first gas sensor or the second gas sensor; and providing an indication of any identified faults.

Method and apparatus for identifying gas sensor faults

A sensor includes an oxygen pump cell; an oxygen pump chamber; an emf cell; a reference chamber providing a fluid connection to the reference gas; gas channels in fluid communication with the pump and emf electrodes, the reference gas comprising reformate produced by a fuel reformer fueled by an air-fuel gas mixture having an air-fuel ratio; a reformer electronic control module; a sensor electronic control module; a heater; a temperature sensor disposed in communication with the heater and the sensor control module for maintaining the sensor at a desired operating temperature; a closed loop controlled operation amplifier in electrical communication with the sensor, whereby the oxygen pump cell provides sufficient oxygen ions to oxidize an incoming diffusion-limiting fuel flux to the emf cell and maintain a constant emf at the emf cell, and wherein a current value represents an equivalent to the air-fuel ratio of the air-fuel gas mixture.

Sensor and sensing method

A method and device allow the determination of the concentrations of a plurality of gas species in a gas mixture based on the output signals from a plurality of gas sensors, each of which is sensitive to a plurality of gas species in the gas mixture. The method includes measuring the response of each sensor at a number of levels of each gas in the mixture, determining a mathematical representation of the response characteristics of each sensor, and using the mathematical representation to determine gas concentrations from sensor readings.

Method and device for characterization and sensing of exhaust gas and control of engines and components for aftertreatment of exhaust gases

An ammonia gas sensor is disclosed that includes a reference electrode, an ammonia selective sensing electrode and an electrolyte disposed therebetween. The ammonia sensing electrode comprises an oxide material characterized by the formulaCeALVO wherein L is lanthanum or another lanthanide element other than cerium, A is one or more other metals, and w, x, y and z are numbers indicative of atomic proportion with w ranging from about 0.001 to about 4 x ranging from 0 to about 0.8, y ranging from about 0.001 to about 4, and z with a range to balance the existence of Cew, Ax, Ly and V.

Ammonia gas sensors with lanthanide vanadate sensing electrode

An ammonia gas sensor is disclosed that includes a reference electrode, an ammonia selective sensing electrode and an electrolyte disposed therebetween. The ammonia sensing electrode comprises vanadium silicide, vanadium oxysilicide, vanadium carbide, vanadium oxycarbide, vanadium nitride, or vanadium oxynitride.

Ammonia gas sensors with vanadium-based sensing electrode

An exhaust gas sensing system and a method for determining concentrations of exhaust gas constituents are provided. The exhaust gas sensing system includes a NHsensing cell, a NOsensing cell, a NOpumping cell, and a current sensor that detects an electrical current flowing through the NOpumping cell. A computer determines a NOconcentration value, a NHconcentration value, a NO concentration value, and a NOconcentration value based on signals from the NHsensing cell, the NOsensing cell, and the current sensor.

Exhaust gas sensing system and method for determining concentrations of exhaust gas constituents

An exhaust gas sensor and a method for determining concentrations of exhaust gas constituents are provided. The exhaust gas sensor includes a NONernst cell that generates a first voltage indicative of a NOconcentration in the exhaust gases communicating with the NOsensing electrode. The exhaust gas sensor further includes a NONernst cell that generates a second voltage indicative of a NOconcentration in the exhaust gases communicating with the NOsensing electrode. The exhaust gas sensor further includes a NHNernst cell that generates a third voltage indicative of a NHconcentration in the exhaust gases communicating with the NHsensing electrode.

Exhaust gas sensor and method for determining concentrations of exhaust gas constituents

Systems and methods for determining an NHconcentration in exhaust gases from an engine are provided. In one exemplary embodiment, a method includes generating a first signal from an NHsensor fluidly communicating with the exhaust gases. The method further includes generating a second signal from an air humidity sensor disposed proximate to an air intake manifold of the engine indicating a humidity level. The method further includes determining an air/fuel ratio associated with the engine. The method further includes determining an NHdeviation value in a calibration table based on the second signal and the air/fuel ratio, utilizing a controller. The method further includes determining an NHconcentration value based on the first signal and the NHdeviation value, utilizing the controller. The NHconcentration value is indicative of the NHconcentration in the exhaust gases. The method further includes storing the NHconcentration value in a memory device, utilizing the controller.

Systems and methods for sensing an ammonia concentration in exhaust gases

A NOsensor material includes a composition of BaAFeBO. Constituent A and constituent B are doping elements. Constituent A is selected from the group consisting of Bi, La and Pb and X is a real number where 0&#x2266;X&#x3c;1. Constituent B is selected from the group consisting of Al, B, Bi, Ca, Co, Cr, Cu, Er, Ga, In, Mg, Mn, Ni, Nb, Rh, Pb, Si, Sr, Ti, Ta, Zn and Zr and Y is a real number where 0&#x2266;Y&#x3c;12. The NOsensor material may be used in a sensor element of a NOsensor.

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Troy, MI, United States of America

Da Yu Wang