Device for detecting the air-fuel ratio of an internal combustio

Details Device for detecting the air-fuel ratio of an internal combustio Device for detecting the air-fuel ratio of an internal combustio

1976-09-23

1978-06-20

Myracle, Jerry W.

Measuring and testing

Test stand

For engine

73 27R, G01M 1500

Patent

active

040954625

ABSTRACT:
A device for detecting the air-fuel ratio of the mixture supplied to an internal combustion engine of the type including an exhaust gas recirculation system for recirculating a part of the exhaust gas into an intake passage. The device comprises means for detecting the thermal conductivity of the exhaust gas, an electric circuit having a battery which supplies an electric current to said thermal conductivity detecting means and means for measuring the changes of the electric resistance of said thermal conductivity detecting means.

REFERENCES:
patent: 3841283 (1974-10-01), Wood
patent: 4005689 (1977-02-01), Barnard

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