Method of feedback-controlling idling speed of internal combusti

Details Method of feedback-controlling idling speed of internal combusti Method of feedback-controlling idling speed of internal combusti

1985-01-17

1987-03-17

Cox, Ronald B.

Internal-combustion engines

Engine speed regulator

Idle speed control

290 40R, F02D 902

Patent

active

046498788

ABSTRACT:
An idling speed feedback control method for use with an internal combustion engine having electrical load equipment and a generator for supplying electric power to said electrical load equipment, said generator being driven by said engine, wherein an idling speed feedback control amount is effected as a function of the difference between an actual engine speed and a target idling speed. The method comprises the steps of detecting a generating state signal as a function of the field coil current of the generator which represents the generating state of the generator; detecting the actual engine speed; determining an electrical load correction value as a function of the generating state signal and the actual engine speed; and correcting the feedback control amount during idling by an amount corresponding to the correction value. Determining the electrical load correction value comprises modifying a reference correction value for a control amount, corresponding to a predetermined engine speed set on the basis of the detected generating state signal, as a function of the difference between the detected value of the actual engine speed and the predetermined engine speed.

REFERENCES:
patent: 4184083 (1980-01-01), Takeuchi
patent: 4402288 (1983-09-01), Ohgami
patent: 4418665 (1983-12-01), Nagase
patent: 4467761 (1984-08-01), Hasegawa
patent: 4475505 (1984-10-01), Hasegawa
patent: 4479472 (1984-10-01), Shimamura
patent: 4491109 (1985-01-01), Kishi
patent: 4510903 (1985-04-01), Sakakiyama
patent: 4553516 (1985-11-01), Hasegawa

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