Air-fuel ratio compensating apparatus for internal combustion en

Details Air-fuel ratio compensating apparatus for internal combustion en Air-fuel ratio compensating apparatus for internal combustion en

1982-09-14

1985-01-08

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Having fluidic logic control means

123438, F02M 724

Patent

active

044921993

ABSTRACT:
An air-fuel ratio compensating apparatus for the carburetor of an internal combustion engine has first and second valves having equal control (input) current-opening characteristics and provided in main and slow system air bleed paths respectively to control sectional area of flow in the main and slow system air bleed paths in relation to the output of an air-fuel ratio sensor, electronic control circuit which sends the control current to the first and second valves in such a way that the opening of the second valve is always larger than that of the first valve. Thus, flow of the main system air bleed is restrained during the initial part of the acceleration period so as to reduce the amount of noxious component in the exhaust gas.

REFERENCES:
patent: 4169439 (1979-10-01), Tsiang et al.
patent: 4197822 (1980-04-01), Tsiang
patent: 4306523 (1981-12-01), Takeda

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