Exhaust gas operated apparatus for continuously measuring air nu

Details Exhaust gas operated apparatus for continuously measuring air nu Exhaust gas operated apparatus for continuously measuring air nu

1974-08-09

1976-04-06

Gill, James J.

Measuring and testing

Gas analysis

Gas chromatography

G01N 3104

Patent

active

039480810

ABSTRACT:
The output of an oxygen sensor is fed in parallel to the inputs of amplifiers having amplification in different portions of the sensor output range and having different gain. The amplifier outputs are combined in a summing circuit. The result is to smooth out the characteristic of the measurement and to produce a signal that can drive an indicator to provide a meaningful indication in terms of air number. The temperature of the oxygen sensor must be regulated or compensated for for good results.

REFERENCES:
patent: 3220255 (1965-11-01), Scranton et al.
patent: 3611243 (1971-10-01), Hardtl
patent: 3644836 (1972-02-01), Johnson
patent: 3736515 (1973-05-01), Kadron et al.
patent: 3738341 (1973-06-01), Loos
patent: 3820015 (1974-06-01), Jeunehomme

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