Delphi Technologies, Inc.

Robert Jerome Farhat

Da Yu Wang

Walter Thomas Symons

Joachim Kupe

Sheng Yao

Kaius Kiiren Polikarpus

Carlos Augusto Valdes

Elizabeth Briggs

Yingjie Lin

William J LaBarge

John E Kirwan

Raymond Leo Bloink

Kenneth David Mowery

David D Cabush

Sheng Yau

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

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

One embodiment of an ammonia gas sensor includes: a reference electrode, an ammonia selective sensing electrode and an electrolyte disposed therebetween. The sensing electrode comprises the reaction product of a main material selected from the group consisting of vanadium, tungsten, molybdenum, vanadium oxides, tungsten oxides, molybdenum oxides, and combinations comprising at least one of the foregoing main materials, and an electrically conducting material selected from the group consisting of electrically conductive metals, electrically conductive metal oxides, and combinations comprising at least one of the foregoing.

Ammonia gas sensors

A sensor including a species selective electrode and a reference electrode having an electrolyte layer disposed therebetween; a reference gas channel in fluid communication with the reference electrode; a heater and a temperature sensor; wherein the species selective electrode is disposed on a first side of an insulating layer separating the species selective electrode from the electrolyte layer, the insulating layer having a first substantially solid area and a second area having an opening pattern extending through the insulating layer; the species selective electrode comprising a species sensing electrode portion disposed on the opening pattern of the insulating layer so as to contact the electrolyte layer through the opening pattern and a non-active electrode lead portion disposed over the first substantially solid area so that the non-active electrode lead portion is in electrical communication with the species sensing electrode portion and is free from contact with the electrolyte layer.

Gas sensor and method for forming same

Disclosed herein are NOx sensors and methods of using the same. In one embodiment, a method for sensing NOx comprises: contacting a first NOx electrode with the gas, contacting a second NOx electrode with the gas, determining a NOemf between the first NOX electrode and a first reference electrode, determining a NOx emf between the second NOx electrode and a second reference electrode, and determining a NOconcentration and a NO concentration using the NOemf and the NOx emf. The first electrode can be at a first temperature of greater than or equal to about 700&#xb0; C., and the second electrode can be at a second temperature of about 500&#xb0; C. to about 650&#xb0; C.

NOx sensor and methods of using the same

In one embodiment, a method for forming the sensor comprises: disposing capacitance electrodes and a heater on green layers; disposing the layers such that the capacitance electrodes are disposed between adjacent green layers and the heater is disposed on a side of a green layer opposite one of the capacitance electrodes; disposing a gap insert in physical contact with the capacitance electrodes, wherein the gap insert has a higher sintering temperature than the green layers; sintering the green layers; and removing the gap insert.

Growing community of inventors

Grosse Pte. Park, MI, United States of America

Robert Jerome Farhat