Method and apparatus for controlling the composition of the comb

Details Method and apparatus for controlling the composition of the comb Method and apparatus for controlling the composition of the comb

1982-09-21

1984-01-24

Cox, Ronald B.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

123489, 123440, 60276, F02B 300

Patent

active

044269870

ABSTRACT:
An internal combustion engine is provided with an ion current sensor in the exhaust conduit. The sensor may be simply a spark plug across which is applied the vehicle battery voltage. The operation of the engine at various values of mixture composition yields characteristic curves for the ion current and for the fluctuations in the ion current as a function of the air number. These characteristic data are used to provide set point values against which the prevailing ion current is compared. If a set point value is exceeded, the fuel-air mixture is adjusted accordingly by an integral controller.

REFERENCES:
patent: 3744461 (1973-07-01), Derek
patent: 3841283 (1974-10-01), Wood
patent: 3874171 (1975-04-01), Schmidt et al.
patent: 3903853 (1975-09-01), Kizler et al.
patent: 3908366 (1975-09-01), Masaki
patent: 4372270 (1983-02-01), Latsch et al.

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