Gas analyzing techniques

Details Gas analyzing techniques Gas analyzing techniques

1982-01-25

1983-12-06

Kreitman, Stephen A.

Measuring and testing

Gas analysis

Gas chromatography

364828, G01N 2700

Patent

active

044185669

ABSTRACT:
Gas analyzing techniques for monitoring the amount of oxygen in the exhaust of motor vehicles. An oxygen sensor produces a sensor signal having a sensor value proportional to the partial pressure of the oxygen produced by the motor vehicle. Processing circuitry generates a resulting signal proportional to the sum of the sensor value, another value proportional to the first derivative of the sensor value and a third value proportional to the second derivative of the sensor value. The resulting signal can be used to predict the final sensor value at a point in time earlier than would be otherwise possible.

REFERENCES:
patent: 3333185 (1967-07-01), Riseman et al.
patent: 4030349 (1977-06-01), Blanke et al.
patent: 4031747 (1977-06-01), Blanke

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