Internal-combustion engines – Charge forming device – Having fluidic logic control means
Patent
1980-12-09
1983-08-23
Cox, Ronald B.
Internal-combustion engines
Charge forming device
Having fluidic logic control means
123492, 123493, F02B 3300, F02M 700
Patent
active
043997902
ABSTRACT:
An electronic control system for controlling the air-fuel ratio for an internal combustion engine comprising an oxygen sensor for detecting the concentration of oxygen in exhaust gases of the engine, an on-off type electromagnetic valve for correcting the air-fuel ratio of the air-fuel mixture supplied by an air-fuel mixture supply device, a comparator for evaluating the output signal of the oxygen sensor, an integrating and a proportional circuit connected to the comparator, and a driving circuit for producing pulses for driving the on-off type electromagnetic valve from output signals of the integrating circuit and proportional circuits for controlling the air-fuel ratio to a value substantially equal to the stoichiometric air-fuel ratio. A potentiometer-type transducer converts the operation of the throttle valve to an electric output, and a differentiating circuit differentiates the output of the transducer. The constants of the integrating and proportional circuits are increased by the differentiation signal from the differentiating circuit upon acceleration and deceleration of the engine.
REFERENCES:
patent: 4075982 (1978-02-01), Asano
patent: 4111162 (1978-09-01), Norimatsu
patent: 4131091 (1978-12-01), Asano
patent: 4144847 (1979-03-01), Hosaka
patent: 4173952 (1979-11-01), Asano
patent: 4187812 (1980-02-01), Hosaka
patent: 4227507 (1980-10-01), Takase
patent: 4240389 (1980-12-01), Shimazaki
Cox Ronald B.
Farber Martin A.
Fuji Jukogyo Kabushiki Kaisha
Nissan Motor Co,. Ltd.
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