Oxygen sensor system and method
AssigneeDelphi Technologies IP Limited
InventorsMark W. Gose, Jerry W. Campbell
Life of this patent
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Abstract
An oxygen sensor system includes an oxygen sensor and associated circuitry connected thereto. The oxygen sensor including a reference cell. The associated circuitry measures the impedance of the reference cell at time intervals, wherein the time intervals include a random component.
Claims20
An oxygen sensor system including an oxygen sensor and associated circuitry connected thereto, said an oxygen sensor including a reference cell, said associated circuitry configured to measure the impedance of said reference cell at time intervals, wherein said time intervals include a random component.
A method of controlling the temperature of an oxygen sensor, said oxygen sensor including a reference cell and a heater, said method comprising
- a) measuring the impedance of said reference cell at time intervals;
- b) determining the temperature of said sensor based on the measurement of impedance of said reference cell at said time intervals;
- c) controlling said heater dependent on said determined temperature;
- wherein said time intervals include a random component.
Dependencies are inferred from the claim text.