Air-fuel ratio control system in an internal combustion engine

Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means

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Details

123 59PC, 60276, 261 23A;121B;DIG.74, F02M 700, F02M 702

Patent

active

040917819

ABSTRACT:
An air-fuel ratio control system in a twin carburetor type of an internal combustion engine comprising two SU carburetors each provided with an air-bleed passage opening into a main nozzle of said carburetor, a quantity of the bled air being regulated by an electromagnetic valve means which operates in response to an output signal emanating from a common oxygen sensor installed in the exhaust manifold, a phase difference being produced between input signals supplied to the two electromagnetic valve means, by a phase difference control unit.

REFERENCES:
patent: 3742922 (1973-07-01), Hisatomi et al.
patent: 3827237 (1974-08-01), Linder et al.
patent: 3963009 (1976-06-01), Mennesson
patent: 3982393 (1976-09-01), Masaki et al.
patent: 4030292 (1977-06-01), Masaki et al.

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