Delphi Technologies, Inc.

Lora Younkman

Raymond Leo Bloink

Kaius Kiiren Polikarpus

Da Yu Wang

Charles Scott Nelson

Walter Thomas Symons

Paul Casey Kikuchi

David K Chen

Frederick L Kennard

Eric J Detwiler

Lone-Wen F Tai

Richard Eugene Fouts

Walter J Symons

A gas sensor for sensing NO having electrochemical cells wherein dielectric material surrounds electrolytes except where electrodes are attached. Thereby, the exhaust gas is effectively prevented from contacting the electrolytes of the sensor's electrochemical cells. With the use of this technique, signal cross talk is minimized while enhancing NOx sensing sensitivity. Further, the total number electrodes needed are reduced which allows for more complex sensors structures.

Exhaust species sensing method and device

The method of making a wide range oxygen sensor of the present invention enables ease of handling and processing, particularly in a mass production environment. This process comprises forming planar composite elements of the sensor where the elements are individually laminated. These laminated composites are easily handled and readily stacked. Furthermore, electrodes and electrode leads can be readily deposited on the laminated composites, across the intersection of the various materials forming the composite. After deposition of the electrodes, leads, and a heater, the elements are stacked accordingly and laminated to produce the oxygen sensor.

Method for making a wide range sensor element

Disclosed herein is a planar exhaust gas sensor for sensing the partial pressure of a gas in an exhaust. The sensing element has a modified, non-rectangular overall geometry. A terminal end of the element, onto which external sensor circuits can be attached, has a larger width than a sensor end of the element, in which is located the sensing cell. The reduced size of the sensor end of the element relative allows for more rapid attainment of operating temperature and lower energy consumption.

Planar exhaust sensor element with enhanced geometry

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Grand Blanc, MI, United States of America

Lora Younkman