Closed loop fuel control in accordance with sensed engine operat

Details Closed loop fuel control in accordance with sensed engine operat Closed loop fuel control in accordance with sensed engine operat

1977-11-17

1979-11-13

Myhre, Charles J.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

60276, F02M 714

Patent

active

041739566

ABSTRACT:
An engine operational condition detector detects a mode among several modes, such as an idling state, a steady state and an accelerating state, where a signal is utilized for selectively actuating one of several integrators, each of which has a predetermined time-constant. One of the integrators, when actuated, integrates an output signal of a P-I controller of a closed loop fuel control system, the integrated signal being stored in a capacitor connected across the integrator. Electromagnetic valves disposed in the openings of main air-bleeds of main and slow circuits of a carburetor are energized in accordance with the output signal of each integrator while other electromagnetic valves disposed in the openings of auxiliary air-bleeds of the same are energized in dependence on the output signal of the P-I controller.

REFERENCES:
patent: 3827237 (1974-08-01), Linder et al.
patent: 3831564 (1974-08-01), Schmidt et al.
patent: 3906910 (1975-09-01), Szlaga, Jr.
patent: 3939654 (1976-02-01), Creps
patent: 4023357 (1977-05-01), Masaki
patent: 4026256 (1977-05-01), Fenn
patent: 4029061 (1977-06-01), Asano
patent: 4046118 (1977-09-01), Aono
patent: 4057042 (1977-11-01), Aono
patent: 4083337 (1978-04-01), Hattori et al.
patent: 4089313 (1978-05-01), Asano et al.

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