Delphi Technologies, Inc.

Delphi Technologies IP Limited

David D Cabush

Da Yu Wang

Charles Scott Nelson

Mark A Shost

Walter Thomas Symons

Raymond Leo Bloink

David Alexander Goulette

Kenneth David Mowery

Andrew D Herman

Sheng Yao

David M Racine

Ming-Cheng Wu

Robert Jerome Farhat

Daniel George Gauthier

Alfredo Ibarra Covarrubias

Elizabeth Briggs

Thomas M Brunette

Elizabeth Marie Briggs

Sheng Yau

Kenneth D Mowery

A particulate matter sensor includes a first sensing electrode and a second sensing electrode spaced away from the first sensing electrode such that an electrode gap is formed between the first sensing electrode and the second sensing electrode upon which particulate matter is collected, thereby changing conductance between the first sensing electrode and the second sensing electrode. An ionic conductive material is in electrical communication with the first sensing electrode and the second sensing electrode.

Particulate matter sensor

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 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 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

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.

Sensor material and gas sensor element and gas sensor derived therefrom

A system and a method for monitoring operation of an exhaust gas treatment system using an exhaust gas sensor in accordance with an exemplary embodiment is provided. The exhaust gas treatment system has an exhaust pipe configured to receive exhaust gases. The exhaust gas treatment system has an SCR catalyst coupled to the exhaust pipe. The exhaust gas treatment system has a urea delivery system configured to delivery urea upstream of the SCR catalyst. The exhaust gas sensor has an ammonia sensing electrode communicating with exhaust gases downstream of the SCR catalyst. The method includes generating a first output signal utilizing the ammonia sensing electrode, the first output signal being indicative of a first ammonia level. The method further includes generating a second output signal to induce the urea delivery system to deliver a predetermined flow rate of urea upstream of the SCR catalyst. The second output signal is based on the first output signal. The method further includes calculating a first ammonia level range utilizing at least a first engine operating parameter. Finally, the method includes generating a third output signal when the first ammonia level is outside the first ammonia level range. The third output signal indicates at least one of the urea delivery system having degraded operational performance, the SCR catalyst having degraded operational performance, and the exhaust gas sensor having degraded operational performance.

System and method for monitoring operation of an exhaust gas treatment system

A sensing system, including: a sensing assembly, the sensing assembly having: a trim resistor; and a controller removably secured to the sensing assembly, the controller being configured to determine a resistance value of the trim resistor; a database in operable communication with the controller, the database having a plurality of resistance values, each identifying a pair of compensation values; a microprocessor receiving the resistance value of the trim resistor, a first signal and a second signal, the resistance value of the trim resistor being used to define a selected pair of compensation values from the database, one of the selected pair of compensation values is used to adjust the first signal and the other one of the selected pair of compensation values is used to adjust the second signal.

Apparatus and method for trimming multiple sensing elements with a single trim resistor

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Howell, MI, United States of America

David D Cabush