Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1980-12-09
1983-10-25
Cox, Ronald B.
Internal-combustion engines
Charge forming device
Fuel injection system
123440, F02B 300, F02M 1700
Patent
active
044112360
ABSTRACT:
A system for controlling the air-fuel ratio for an internal combustion engine comprises an O.sub.2 sensor for detecting the concentration of a constituent of exhaust gases passing through the exhaust passage, a carburetor for supplying air-fuel mixture to the induction passage of the engine, electromagnetic valves for correcting the air-fuel ratio of the air-fuel mixture supplied by the carburetor, a comparator for comparing the output signal of the O.sub.2 sensor with reference to a reference value, an integrating circuit having a proportional circuit for integrating the output of the comparator, a driving circuit for driving the electromagnetic valve in dependency upon the output signal of the integrating circuit. The system further comprises a detecting device for detecting the acceleration of the engine, a switch for cutting out a part of the control operation of the integrating circuit, and a gate circuit responsive to outputs of the comparator and the detecting device for actuating the switch, whereby the control operation of the system is decreased under the condition of a lean air-fuel mixture supply and acceleration of the engine.
REFERENCES:
patent: 4088095 (1978-05-01), Aono
patent: 4119072 (1978-10-01), Asano
patent: 4121554 (1978-10-01), Sueishi
patent: 4153022 (1979-05-01), Asano
patent: 4163433 (1979-08-01), Fujishiro
patent: 4324218 (1982-04-01), Hattori
Matsui Fujio
Suzuki Hitoshi
Cox Ronald B.
Farber Martin A.
Fuji Jukogyo Kabushiki Kaisha
Nissan Motor Co,. Ltd.
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