Air-fuel ratio control system for an internal combustion engine

Details Air-fuel ratio control system for an internal combustion engine Air-fuel ratio control system for an internal combustion engine

1983-03-02

1985-07-02

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Having fluidic logic control means

123494, F02M 712

Patent

active

045261482

ABSTRACT:
A closed-loop air-fuel control system for an internal combustion engine comprising a control circuit having an open-loop mode of operation in which an air-fuel ratio control signal is fixed to a predetermined value determined by a sensed value of the atmospheric pressure and the temperature of the intake air of the engine. In order to shorten the time period for calculating the air-fuel ratio and to simplifying the circuit construction, an output signal of an atmospheric pressure sensor is supplied to an intake air temperature sensor so as to produce an output signal which represents both the temperature of the intake air and the atmospheric pressure at the same time.

REFERENCES:
patent: 4271797 (1981-06-01), McCarbery
patent: 4280465 (1981-07-01), Staerzl

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