Electronic control system for a carburetor

Details Electronic control system for a carburetor Electronic control system for a carburetor

1980-08-01

1982-10-05

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Having fluidic logic control means

123179G, F02M 718

Patent

active

043523471

ABSTRACT:
An electronic control system for a carburetor of an internal combustion engine having an induction passage, engine cooling water and a device supplies an air-fuel mixture to the induction passage. A converter converts the temperature of the engine cooling water to a first voltage signal. A choke valve is disposed in the induction passage and a bimetal actuates the choke valve. A positive temperature coefficient heater heats the bimetal. A heater circuit produces a second voltage signal dependent on the resistance of the positive temperature coefficient heater. An air-fuel ratio controller controls the air-fuel ratio of the mixture supplied by the air-fuel mixture supply device. A calculating circuit combines the voltage signals from the converter and the heater circuit respectively and produces an electronic control for controlling the air-fuel ratio control. The electronic control is responsive to the output electric signals of the calculating circuit such that the air-fuel ratio is controlled to a value providing satisfactory cold engine operating performance.

REFERENCES:
patent: 3763831 (1973-10-01), Orlando
patent: 3949551 (1976-04-01), Eichler et al.
patent: 4201735 (1980-05-01), Byam

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