Systems for monitoring the composition of exhaust gases

Details Systems for monitoring the composition of exhaust gases Systems for monitoring the composition of exhaust gases

1976-01-08

1977-11-15

Myracle, Jerry W.

Measuring and testing

Gas analysis

Gas chromatography

338 34, G01N 2712

Patent

active

040579964

ABSTRACT:
In a system for monitoring the composition of exhaust gases from an internal combustion engine, a gas-sensitive resistor consisting of gallium oxide is exposed to the gases and is maintained at a substantially constant temperature above that of the gases. A signal is generated dependent on the resistance of the resistor, which varies monotonically with the air/fuel ratio of the inlet mixture, this signal being usable in a system for automatically controlling the composition of the inlet mixture.

REFERENCES:
patent: 3751968 (1973-08-01), Loh et al.
patent: 3865550 (1975-02-01), Bott et al.
patent: 3879985 (1975-04-01), Maslen
patent: 3932246 (1976-01-01), Stadler et al.
patent: 3936794 (1976-02-01), Beaudoin et al.
patent: 3953173 (1976-04-01), Obayashi et al.

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