Feedback control system for internal combustion engine

Details Feedback control system for internal combustion engine Feedback control system for internal combustion engine

1980-05-02

1982-02-09

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Auxiliary control of carburetor fuel metering

123478, 123488, 123494, 123571, 123625, 123626, 123435, F02M 5100, F02M 2506, F02P 302

Patent

active

043145345

ABSTRACT:
A control system for an internal combustion engine comprises a transducer for issuing a signal representative of combustion pressure in a combustion chamber, a unit consisting of a bandpass filter and a wave-form shaping circuit for issuing a signal representative of existing combustion timing of the combustion chamber by processing the signal from the transducer for detection of rapid increase of the combustion pressure; a reference timing circuit for issuing a signal representative of a predetermined reference combustion timing of the combustion chamber in accordance with operation modes of the engine, a comparator circuit for issuing a signal representative of a difference between the signal from the unit and the signal from the reference timing circuit, and a unit consisting of a discriminating circuit and an actuator driving circuit for controlling the ignition timing, the air-fuel ratio of air-fuel mixture and the amount of exhaust gas recirculated into the intake system of the engine, by processing the signal from the comparator circuit.

REFERENCES:
patent: 2621642 (1952-12-01), Malick
patent: 3789816 (1974-02-01), Taplin et al.
patent: 4153013 (1979-05-01), Bianchi
patent: 4173205 (1979-11-01), Toelle
patent: 4216750 (1980-08-01), Kobayashi
patent: 4233943 (1980-11-01), Rogora et al.
patent: 4240388 (1980-12-01), Omori et al.
patent: 4249494 (1981-02-01), Guipaud

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