Carburetor

Details Carburetor Carburetor

1974-07-01

1976-01-20

Miles, Tim R.

Gas and liquid contact apparatus

Fluid distribution

Valved

261 69R, 261121B, 261DIG74, F02M 720

Patent

active

039339513

ABSTRACT:
In a carburetor having a two-stage power valve and an off-idle air bleed, a lean air-fuel mixture may be supplied when it is desirable to operate in a lean mode for optimizing an exhaust gas oxidizing reactor while a rich air-fuel mixture may be provided when it is desirable to operate in a rich mode for optimizing an exhaust gas reducing converter. In the rich mode means comprising a selectively energizable solenoid control closes the off-idle air bleed and opens the first stage of the power valve thereby enriching both off-idle and open throttle air-fuel mixtures. The power valve is also operated by an induction pressure responsive piston, and at high induction pressures both stages may be opened during lean mode operation and the second stage may be opened during rich mode operation for wide open throttle enrichment.

REFERENCES:
patent: 1675344 (1928-07-01), Guthrie
patent: 2922629 (1960-01-01), Germano et al.
patent: 3575390 (1971-04-01), Bickhaus et al.
patent: 3618907 (1971-11-01), Severn
patent: 3685502 (1972-08-01), Oberdorfer, Jr.
patent: 3744346 (1973-07-01), Miner et al.
patent: 3800766 (1974-04-01), Schubeck
patent: 3859397 (1975-01-01), Tryon

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